Gotowa bibliografia na temat „Salient object-Machines”

Abstract Image registration is a key component of various image processing operations which involve the analysis of different image data sets. Automatic image registration domains have witnessed the application of many intelligent methodologies over the past decade; however inability to properly model object shape as well as contextual information had limited the attainable accuracy. In this paper, we propose a framework for accurate feature shape modeling and adaptive resampling using advanced techniques such as Vector Machines, Cellular Neural Network (CNN), SIFT, coreset, and Cellular Automata. CNN has found to be effective in improving feature matching as well as resampling stages of registration and complexity of the approach has been considerably reduced using corset optimization The salient features of this work are cellular neural network approach based SIFT feature point optimisation, adaptive resampling and intelligent object modelling. Developed methodology has been compared with contemporary methods using different statistical measures. Investigations over various satellite images revealed that considerable success was achieved with the approach. System has dynamically used spectral and spatial information for representing contextual knowledge using CNN-prolog approach. Methodology also illustrated to be effective in providing intelligent interpretation and adaptive resampling.

In order to address the problems of various interference factors and small sample acquisition in surface floating object detection, an object detection algorithm combining spatial and frequency domains is proposed. Firstly, a rough texture detection is performed in a spatial domain. A Fused Histogram of Oriented Gradient (FHOG) is combined with a Gray Level Co-occurrence Matrix (GLCM) to describe global and local information of floating objects, and sliding windows are classified by Support Vector Machines (SVM) with new texture features. Then, a novel frequency-based saliency detection method used in complex scenes is proposed. It adopts global and local low-rank decompositions to remove redundant regions caused by multiple interferences and retain floating objects. The final detection result is obtained by a strategy of combining bounding boxes from different processing domains. Experimental results show that the overall performance of the proposed method is superior to other popular methods, including traditional image segmentation, saliency detection, hand-crafted texture detection, and Convolutional Neural Network Based (CNN-based) object detection. The proposed method is characterized by small sample training and strong anti-interference ability in complex water scenes like ripple, reflection, and uneven illumination. The average precision of the proposed is 97.2%, with only 0.504 seconds of time consumption.

This paper presents a new approach for telefabrication where a physical object is scanned in one location and fabricated in another location. This approach integrates three-dimensional (3D) scanning, geometric processing of scanned data, and additive manufacturing (AM) technologies. In this paper, we focus on a set of direct geometric processing techniques that enable the telefabrication. In this approach, 3D scan data are directly sliced into layer-wise contours. Sacrificial supports are generated directly from the contours and digital mask images of the objects and the supports for stereolithography apparatus (SLA) processes are then automatically generated. The salient feature of this approach is that it does not involve any intermediate geometric models such as STL, polygons, or nonuniform rational B-splines (NURBS) that are otherwise commonly used in prevalent approaches. The experimental results on a set of objects fabricated on several SLA machines confirm the effectiveness of the approach in faithfully telefabricating physical objects.

As robots begin to receive citizenship, are treated as beloved pets, and given a place at Japanese family tables, it is becoming clear that these machines are taking on increasingly social roles. While human-robot interaction research relies heavily on self-report measures for assessing people’s perception of robots, a distinct lack of robust cognitive and behavioural measures to gauge the scope and limits of social motivation towards artificial agents exists. Here we adapted Conty and colleagues’ (2010) social version of the classic Stroop paradigm, in which we showed four kinds of distractor images above incongruent and neutral words: human faces, robot faces, object faces (for example, a cloud with facial features) and flowers (control). We predicted that social stimuli, like human faces, would be extremely salient and draw attention away from the to-be-processed words. A repeated-measures ANOVA indicated that the task worked (the Stroop effect was observed), and a distractor-dependent enhancement of Stroop interference emerged. Planned contrasts indicated that specifically human faces presented above incongruent words significantly slowed participants’ reaction times. To investigate this small effect further, we conducted a second experiment (N=51) with a larger stimulus set. While the main effect of the incongruent condition slowing down participants’ reaction time replicated, we did not observe an interaction effect of the social distractors (human faces) drawing more attention than the other distractor types. We question the suitability of this task as a robust measure for social motivation and discuss our findings in the light of recent conflicting results in the social attentional capture literature.

Dégueulasse is French slang for “disgusting,” derived in 1867 from the French verb dégueuler, to vomit. Despite its vulgar status, it is frequently used by almost every French speaker, including foreigners and students. It is also a term that has often been employed to describe the 1973 cult film, La Grande bouffe [Blow Out], by Marco Ferreri, which recounts in grotesque detail the gastronomic suicide of four male protagonists. This R-rated French-Italian production was booed, and the director spat on, at the 26th Cannes Film Festival—the Jury President, Ingrid Bergman, said it was the most “sordid” film she’d ever seen, and is even reported to have vomited after watching it (Télérama). Ferreri nevertheless walked away with the Prix FIPRESCI, awarded by the Federation of International Critics, and it is apparently the largest grossing release in the history of Paris with more than 700,000 entries in Paris and almost 3 million in France overall. Scandal sells, and this was especially seemingly so 1970s, when this film was avidly consumed as part of an unholy trinity alongside Bernardo Bertolucci’s Le Dernier Tango à Paris [Last Tango in Paris] (1972) and Jean Eustache’s La Maman et la putain [The Mother and the Whore] (1973). Fast forward forty years, though, and at the very moment when La Grande bouffe was being commemorated with a special screening on the 2013 Cannes Film Festival programme, a handful of University of Melbourne French students in a subject called “Matters of Taste” were boycotting the film as an unacceptable assault to their sensibilities. Over the decade that I have been showing the film to undergraduate students, this has never happened before. In this article, I want to examine critically the questions of taste that underpin this particular predicament. Analysing firstly the intradiegetic portrayal of taste in the film, through both gustatory and aesthetic signifiers, then the choice of the film as a key element in a University subject corpus, I will finally question the (dis)taste displayed by certain students, contextualising it as part of an ongoing socio-cultural commentary on food, sex, life, and death. Framed by a brief foray into Bourdieusian theories of taste, I will attempt to draw some conclusions on the continual renegotiation of gustatory and aesthetic tastes in relation to La Grande bouffe, and thereby deepen understanding of why it has become the incarnation of dégueulasse today. Theories of Taste In the 1970s, the parameters of “good” and “bad” taste imploded in the West, following political challenges to the power of the bourgeoisie that also undermined their status as the contemporary arbiters of taste. This revolution of manners was particularly shattering in France, fuelled by the initial success of the May 68 student, worker, and women’s rights movements (Ross). The democratization of taste served to legitimize desires different from those previously dictated by bourgeois norms, enabling greater diversity in representing taste across a broad spectrum. It was reflected in the cultural products of the 1970s, including cinema, which had already broken with tradition during the New Wave in the late 1950s and early 1960s, and became a vector for political ideologies as well as radical aesthetic choices (Smith). Commonly regarded as “the decade that taste forgot,” the 1970s were also a time for re-assessing the sociology of taste, with the magisterial publication of Pierre Bourdieu’s Distinction: A Social Critique of the Judgement of Taste (1979, English trans. 1984). As Bourdieu refuted Kant’s differentiation between the legitimate aesthetic, so defined by its “disinterestedness,” and the common aesthetic, derived from sensory pleasures and ordinary meanings, he also attempted to abolish the opposition between the “taste of reflection” (pure pleasure) and the “taste of sense” (facile pleasure) (Bourdieu 7). In so doing, he laid the foundations of a new paradigm for understanding the apparently incommensurable choices that are not the innate expression of our unique personalities, but rather the product of our class, education, family experiences—our habitus. Where Bourdieu’s theories align most closely with the relationship between taste and revulsion is in the realm of aesthetic disposition and its desire to differentiate: “good” taste is almost always predicated on the distaste of the tastes of others. Tastes (i.e. manifested preferences) are the practical affirmation of an inevitable difference. It is no accident that, when they have to be justified, they are asserted purely negatively, by the refusal of other tastes. In matters of taste, more than anywhere else, all determination is negation; and tastes are perhaps first and foremost distastes, disgust provoked by horror or visceral intolerance (“sick-making”) of the tastes of others. “De gustibus non est disputandum”: not because “tous les goûts sont dans la nature,” but because each taste feels itself to be natural—and so it almost is, being a habitus—which amounts to rejecting others as unnatural and therefore vicious. Aesthetic intolerance can be terribly violent. Aversion to different life-styles is perhaps one of the strongest barriers between the classes (Bourdieu). Although today’s “Gen Y” Melbourne University students are a long way from 1970s French working class/bourgeois culture clashes, these observations on taste as the corollary of distaste are still salient tools of interpretation of their attitudes towards La Grande bouffe. And, just as Bourdieu effectively deconstructed Kant’s Critique of Aesthetic Judgement and the 18th “century of taste” notions of universality and morality in aesthetics (Dickie, Gadamer, Allison) in his groundbreaking study of distinction, his own theories have in turn been subject to revision in an age of omnivorous consumption and eclectic globalisation, with various cultural practices further destabilising the hierarchies that formerly monopolized legitimate taste (Sciences Humaines, etc). Bourdieu’s theories are still, however, useful for analysing La Grande bouffe given the contemporaneous production of these texts, as they provide a frame for understanding (dis)taste both within the filmic narrative and in the wider context of its reception. Taste and Distaste in La Grande bouffe To go to the cinema is like to eat or shit, it’s a physiological act, it’s urban guerrilla […] Enough with feelings, I want to make a physiological film (Celluloid Liberation Front). Marco Ferreri’s statements about his motivations for La Grande bouffe coincide here with Bourdieu’s explanation of taste: clearly the director wished to depart from psychological cinema favoured by contemporary critics and audiences and demonstrated his distaste for their preference. There were, however, psychological impulses underpinning his subject matter, as according to film academic Maurizio Viano, Ferrari had a self-destructive, compulsive relation to food, having been forced to spend a few weeks in a Swiss clinic specialising in eating disorders in 1972–1973 (Viano). Food issues abound in his biography. In an interview with Tullio Masoni, the director declared: “I was fat as a child”; his composer Phillipe Sarde recalls the grand Italian-style dinners that he would organise in Paris during the film; and, two of the film’s stars, Marcello Mastroianni and Ugo Tognazzi, actually credit the conception of La Grande bouffe to a Rabelaisian feast prepared by Tognazzi, during which Ferreri exclaimed “hey guys, we are killing ourselves!” (Viano 197–8). Evidently, there were psychological factors behind this film, but it was nevertheless the physiological aspects that Ferreri chose to foreground in his creation. The resulting film does indeed privilege the physiological, as the protagonists fornicate, fart, vomit, defecate, and—of course—eat, to wild excess. The opening scenes do not betray such sordid sequences; the four bourgeois men are introduced one by one so as to establish their class credentials as well as display their different tastes. We first encounter Ugo (Tognazzi), an Italian chef of humble peasant origins, as he leaves his elegant restaurant “Le Biscuit à soupe” and his bourgeois French wife, to take his knives and recipes away with him for the weekend. Then Michel (Piccoli), a TV host who has pre-taped his shows, gives his apartment keys to his 1970s-styled baba-cool daughter as he bids her farewell, and packs up his cleaning products and rubber gloves to take with him. Marcello (Mastroianni) emerges from a cockpit in his aviator sunglasses and smart pilot’s uniform, ordering his sexy airhostesses to carry his cheese and wine for him as he takes a last longing look around his plane. Finally, the judge and owner of the property where the action will unfold, Philippe (Noiret), is awoken by an elderly woman, Nicole, who feeds him tea and brioche, pestering him for details of his whereabouts for the weekend, until he demonstrates his free will and authority, joking about his serious life, and lying to her about attending a legal conference in London. Having given over power of attorney to Nicole, he hints at the finality of his departure, but is trying to wrest back his independence as his nanny exhorts him not to go off with whores. She would rather continue to “sacrifice herself for him” and “keep it in the family,” as she discreetly pleasures him in this scene. Scholars have identified each protagonist as an ideological signifier. For some, they represent power—Philippe is justice—and three products of that ideology: Michel is spectacle, Ugo is food, and Marcello is adventure (Celluloid Liberation Front). For others, these characters are the perfect incarnations of the first four Freudian stages of sexual development: Philippe is Oedipal, Michel is indifferent, Ugo is oral, and Marcello is impotent (Tury & Peter); or even the four temperaments of Hippocratic humouralism: Philippe the phlegmatic, Michel the melancholic, Ugo the sanguine, and Marcello the choleric (Calvesi, Viano). I would like to offer another dimension to these categories, positing that it is each protagonist’s taste that prescribes his participation in this gastronomic suicide as well as the means by which he eventually dies. Before I develop this hypothesis, I will first describe the main thrust of the narrative. The four men arrive at the villa at 68 rue Boileau where they intend to end their days (although this is not yet revealed). All is prepared for the most sophisticated and decadent feasting imaginable, with a delivery of the best meats and poultry unfurling like a surrealist painting. Surrounded by elegant artworks and demonstrating their cultural capital by reciting Shakespeare, Brillat-Savarin, and other classics, the men embark on a race to their death, beginning with a competition to eat the most oysters while watching a vintage pornographic slideshow. There is a strong thread of masculine athletic engagement in this film, as has been studied in detail by James R. Keller in “Four Little Caligulas: La Grande bouffe, Consumption and Male Masochism,” and this is exacerbated by the arrival of a young but matronly schoolmistress Andréa (Ferréol) with her students who want to see the garden. She accepts the men’s invitation to stay on in the house to become another object of competitive desire, and fully embraces all the sexual and gustatory indulgence around her. Marcello goes further by inviting three prostitutes to join them and Ugo prepares a banquet fit for a funeral. The excessive eating makes Michel flatulent and Marcello impotent; when Marcello kicks the toilet in frustration, it explodes in the famous fecal fountain scene that apparently so disgusted his then partner Catherine Deneuve, that she did not speak to him for a week (Ebert). The prostitutes flee the revolting madness, but Andréa stays like an Angel of Death, helping the men meet their end and, in surviving, perhaps symbolically marking an end to the masculinist bourgeoisie they represent.To return to the role of taste in defining the rise and demise of the protagonists, let me begin with Marcello, as he is the first to die. Despite his bourgeois attitudes, he is a modern man, associated with machines and mobility, such as the planes and the beautiful Bugatti, which he strokes with greater sensuality than the women he hoists onto it. His taste is for the functioning mechanical body, fast and competitive, much like himself when he is gorging on oysters. But his own body betrays him when his “masculine mechanics” stop functioning, and it is the fact that the Bugatti has broken down that actually causes his death—he is found frozen in driver’s seat after trying to escape in the Bugatti during the night. Marcello’s taste for the mechanical leads therefore to his eventual demise. Michel is the next victim of his own taste, which privileges aesthetic beauty, elegance, the arts, and fashion, and euphemises the less attractive or impolite, the scatological, boorish side of life. His feminized attire—pink polo-neck and flowing caftan—cannot distract from what is happening in his body. The bourgeois manners that bind him to beauty mean that breaking wind traumatises him. His elegant gestures at the dance barre encourage rather than disguise his flatulence; his loud piano playing cannot cover the sound of his loud farts, much to the mirth of Philippe and Andréa. In a final effort to conceal his painful bowel obstruction, he slips outside to die in obscene and noisy agony, balanced in an improbably balletic pose on the balcony balustrade. His desire for elegance and euphemism heralds his death. Neither Marcello nor Michel go willingly to their ends. Their tastes are thwarted, and their deaths are disgusting to them. Their cadavers are placed in the freezer room as silent witnesses to the orgy that accelerates towards its fatal goal. Ugo’s taste is more earthy and inherently linked to the aims of the adventure. He is the one who states explicitly: “If you don’t eat, you won’t die.” He wants to cook for others and be appreciated for his talents, as well as eat and have sex, preferably at the same time. It is a combination of these desires that kills him as he force-feeds himself the monumental creation of pâté in the shape of the Cathedral of Saint-Peter that has been rejected as too dry by Philippe, and too rich by Andréa. The pride that makes him attempt to finish eating his masterpiece while Andréa masturbates him on the dining table leads to a heart-stopping finale for Ugo. As for Philippe, his taste is transgressive. In spite of his upstanding career as a judge, he lies and flouts convention in his unorthodox relationship with nanny Nicole. Andréa represents another maternal figure to whom he is attracted and, while he wishes to marry her, thereby conforming to bourgeois norms, he also has sex with her, and her promiscuous nature is clearly signalled. Given his status as a judge, he reasons that he can not bring Marcello’s frozen body inside because concealing a cadaver is a crime, yet he promotes collective suicide on his premises. Philippe’s final transgression of the rules combines diabetic disobedience with Oedipal complex—Andréa serves him a sugary pink jelly dessert in the form of a woman’s breasts, complete with cherries, which he consumes knowingly and mournfully, causing his death. Unlike Marcello and Michel, Ugo and Philippe choose their demise by indulging their tastes for ingestion and transgression. Following Ferreri’s motivations and this analysis of the four male protagonists, taste is clearly a cornerstone of La Grande bouffe’s conception and narrative structure. It is equally evident that these tastes are contrary to bourgeois norms, provoking distaste and even revulsion in spectators. The film’s reception at the time of its release and ever since have confirmed this tendency in both critical reviews and popular feedback as André Habib’s article on Salo and La Grande bouffe (2001) meticulously demonstrates. With such a violent reaction, one might wonder why La Grande bouffe is found on so many cinema studies curricula and is considered to be a must-see film (The Guardian). Corpus and Corporeality in Food Film Studies I chose La Grande bouffe as the first film in the “Matters of Taste” subject, alongside Luis Bunuel’s Le Charme discret de la bourgeoisie, Gabriel Axel’s Babette’s Feast, and Laurent Bénégui’s Au Petit Marguery, as all are considered classic films depicting French eating cultures. Certainly any French cinema student would know La Grande bouffe and most cinephiles around the world have seen it. It is essential background knowledge for students studying French eating cultures and features as a key reference in much scholarly research and popular culture on the subject. After explaining the canonical status of La Grande bouffe and thus validating its inclusion in the course, I warned students about the explicit nature of the film. We studied it for one week out of the 12 weeks of semester, focusing on questions of taste in the film and the socio-cultural representations of food. Although the almost ubiquitous response was: “C’est dégueulasse!,” there was no serious resistance until the final exam when a few students declared that they would boycott any questions on La Grande bouffe. I had not actually included any such questions in the exam. The student evaluations at the end of semester indicated that several students questioned the inclusion of this “disgusting pornography” in the corpus. There is undoubtedly less nudity, violence, gore, or sex in this film than in the Game of Thrones TV series. What, then, repulses these Gen Y students? Is it as Pasolini suggests, the neorealistic dialogue and décor that disturbs, given the ontologically challenging subject of suicide? (Viano). Or is it the fact that there is no reason given for the desire to end their lives, which privileges the physiological over the psychological? Is the scatological more confronting than the pornographic? Interestingly, “food porn” is now a widely accepted term to describe a glamourized and sometimes sexualized presentation of food, with Nigella Lawson as its star, and hundreds of blog sites reinforcing its popularity. Yet as Andrew Chan points out in his article “La Grande bouffe: Cooking Shows as Pornography,” this film is where it all began: “the genealogy reaches further back, as brilliantly visualized in Marco Ferreri’s 1973 film La Grande bouffe, in which four men eat, screw and fart themselves to death” (47). Is it the overt corporeality depicted in the film that shocks cerebral students into revulsion and rebellion? Conclusion In the guise of a conclusion, I suggest that my Gen Y students’ taste may reveal a Bourdieusian distaste for the taste of others, in a third degree reaction to the 1970s distaste for bourgeois taste. First degree: Ferreri and his entourage reject the psychological for the physiological in order to condemn bourgeois values, provoking scandal in the 1970s, but providing compelling cinema on a socio-political scale. Second degree: in spite of the outcry, high audience numbers demonstrate their taste for scandal, and La Grande bouffe becomes a must-see canonical film, encouraging my choice to include it in the “Matters of Taste” corpus. Third degree: my Gen Y students’ taste expresses a distaste for the academic norms that I have embraced in showing them the film, a distaste that may be more aesthetic than political. Oui, c’est dégueulasse, mais … Bibliography Allison, Henry E. Kant’s Theory of Taste: A Reading of the Critique of Aesthetic Judgement. Cambridge, UK: Cambridge UP, 2001. Bourdieu, Pierre. Distinction: A Social Critique of the Judgement of Taste. Trans. Richard Nice. Cambridge, Massachusetts: Harvard UP, 1984. Calvesi, M. “Dipingere all moviola” (Painting at the Moviola). Corriere della Sera, 10 Oct. 1976. Reprint. “Arti figurative e il cinema” (Cinema and the Visual Arts). Avanguardia di massa. Ed. M. Calvesi. Milan: Feltrinelli, 1978. 243–46. Celluloid Liberation Front. “Consumerist Ultimate Indigestion: La Grande Bouffe's Deadly Physiological Pleasures.” Bright Lights Film Journal 60 (2008). 13 Jan. 2014 ‹http://brightlightsfilm.com/60/60lagrandebouffe.php#.Utd6gs1-es5›. Chan, Andrew. “La Grande bouffe: Cooking Shows as Pornography.” Gastronomica: The Journal of Food and Culture 3.4 (2003): 47–53. Dickie, George. The Century of Taste: The Philosophical Odyssey of Taste in the Eighteenth Century. New York and Oxford: Oxford UP, 1996. Ebert, Roger, “La Grande bouffe.” 13 Jan. 2014 ‹http://www.rogerebert.com/reviews/la-grande-bouffe-1973›. Ferreri, Marco. La Grande bouffe. Italy-France, 1973. Freedman, Paul H. Food: The History of Taste. U of California P, 2007. Gadamer, Hans-Georg. Truth and Method. Trans. Joel Winsheimer and Donald C. Marshall. New York: Continuum, 1999. Habib, André. “Remarques sur une ‘réception impossible’: Salo and La Grande bouffe.” Hors champ (cinéma), 4 Jan. 2001. 11 Jan. 2014 ‹http://www.horschamp.qc.ca/cinema/030101/salo-bouffe.html›. Keller, James R. “Four Little Caligulas: La Grande bouffe, Consumption and Male Masochism.” Food, Film and Culture: A Genre Study. Jefferson, North Carolina: McFarland & Co, 2006: 49–59. Masoni, Tullio. Marco Ferreri. Gremese, 1998. Pasolini, P.P. “Le ambigue forme della ritualita narrativa.” Cinema Nuovo 231 (1974): 342–46. Ross, Kristin. May 68 and its Afterlives. Chicago: U of Chicago P, 2008. Smith, Alison. French Cinema in the 1970s: The Echoes of May. Manchester: Manchester UP, 2005. Télérama: “La Grande bouffe: l’un des derniers grands scandales du Festival de Cannes. 19 May 2013. 13 Jan. 2014 ‹http://www.telerama.fr/festival-de-cannes/2013/la-grande-bouffe-l-un-des-derniers-grands-scandales-du-festival-de-cannes,97615.php›. The Guardian: 1000 films to see before you die. 2007. 17 Jan. 2014 ‹http://www.theguardian.com/film/series/1000-films-to-see-before-you-die› Tury, F., and O. Peter. “Food, Life, and Death: The Film La Grande bouffe of Marco Ferreri in an Art Psychological Point of View.” European Psychiatry 22.1 (2007): S214. Viano, Maurizio. “La Grande Abbuffata/La Grande bouffe.” The Cinema of Italy. Ed. Giorgio Bertellini. London: Wallflower Press, 2004: 193–202.

Our daily environment is surrounded by a paradoxically silent and invisible flow: the coming and going of data through our network cables, routers and wireless devices. This data is not just 1s and 0s, but bits of the conversations, images, sounds, thoughts and other forms of information that result from our interaction with the world around us. If we can speak of a global ambience, it is certainly derived from this constant flow of data. It is an endless murmur that speaks to our machines and gives us a sense of awareness of a certain form of surrounding that is independent from our actual, physical location. The constant “presence” of data around us is something that we have become largely aware of. Already in 1994, Phil Agre stated in an article in WIRED Magazine: “We're so accustomed to data that hardly anyone questions it” (1). Agre indicated that this data is in fact a representation of the world, the discrete bits of information that form the reality we are immersed in. He also proposed that it should be “brought to life” by exploring its relationships with other data and the world itself. A decade later, these relationships had become the core of the new paradigm of the World Wide Web and our interaction with cyberspace. As Mitchell Whitelaw puts it: “The web is increasingly a set of interfaces to datasets ... . On the contemporary web the data pour has become the rule, rather than the exception. The so-called ‘web 2.0’ paradigm further abstracts web content into feeds, real-time flows of XML data” ("Art against Information"). These feeds and flows have been used by artists and researchers in the creation of different forms of dynamic visualisations, in which data is mapped according to a set of parameters in order to summarise it in a single image or structure. Lev Manovich distinguishes in these visualisations those made by artists, to which he refers as “data art”. Unlike other forms of mapping, according to Manovich data art has a precise goal: “The more interesting and at the end maybe more important challenge is how to represent the personal subjective experience of a person living in a data society” (15). Therefore, data artists extract from the bits of information available in cyberspace a dynamic representation of our contemporary environment, the ambience of our digital culture, our shared, intimate and at the same time anonymous, subjectivity. In this article I intend to present some of the ways in which artists have dealt with the murmur of data creatively, exploring the immense amounts of user generated content in forms that interrogate our relationship with the virtual environment and the global community. I will discuss several artistic projects that have shaped the data flow on the Internet in order to take the user back to a state of contemplation, as a listener, an observer, and finally encountering the virtual in a physical form. Listening The concept of ambience particularly evokes an auditory experience related to a given location: in filmmaking, it refers to the sounds of the surrounding space and is the opposite of silence; as a musical genre, ambient music contributes to create a certain atmosphere. In relation to flows of data, it can be said that the applications that analyze Internet traffic and information are “listening” to it, as if someone stands in a public place, overhearing other people's conversations. The act of listening also implies a reception, not an emission, which is a substantial distinction given the fact that data art projects work with given data instead of generating it. As Mitchell Whitelaw states: “Data here is first of all indexical of reality. Yet it is also found, or to put it another way, given. ... Data's creation — in the sense of making a measurement, framing and abstracting something from the flux of the real — is left out” (3). One of the most interesting artistic projects to initially address this sort of “listening” is Carnivore (2001) by the Radical Software Group. Inspired by DCS1000, an e-mail surveillance software developed by the FBI, Carnivore (which was actually the original name of the FBI's program) listens to Internet traffic and serves this data to interfaces (clients) designed by artists, which interpret the provided information in several ways. The data packets can be transformed into an animated graphic, as in amalgamatmosphere (2001) by Joshua Davis, or drive a fleet of radio controlled cars, as in Police State (2003) by Jonah Brucker-Cohen. Yet most of these clients treat data as a more or less abstract value (expressed in numbers) that serves to trigger the reactions in each client. Carnivore clients provide an initial sense of the concept of ambience as reflected in the data circulating the Internet, yet other projects will address this subject more eloquently. Fig. 1: Ben Rubin, Mark Hansen, Listening Post (2001-03). Multimedia installation. Photo: David Allison.Listening Post (2001-04) by Mark Hansen and Ben Rubin is an installation consisting of 231 small electronic screens distributed in a semicircular grid [fig.1: Listening Post]. The screens display texts culled from thousands of Internet chat rooms, which are read by a voice synthesiser and arranged synchronically across the grid. The installation thus becomes a sort of large panel, somewhere between a videowall and an altarpiece, which invites the viewer to engage in a meditative contemplation, seduced by the visual arrangement of the flickering texts scrolling on each screen, appearing and disappearing, whilst sedated by the soft, monotonous voice of the machine and an atmospheric musical soundtrack. The viewer is immersed in a particular ambience generated by the fragmented narratives of the anonymous conversations extracted from the Internet. The setting of the piece, isolated in a dark room, invites contemplation and silence, as the viewer concentrates on seeing and listening. The artists clearly state that their goal in creating this installation was to recreate a sense of ambience that is usually absent in electronic communications: “A participant in a chat room has limited sensory access to the collective 'buzz' of that room or of others nearby – the murmur of human contact that we hear naturally in a park, a plaza or a coffee shop is absent from the online experience. The goal of Listening Post is to collect this buzz and render it at a human scale” (Hansen 114-15). The "buzz", as Hansen and Rubin describe it, is in fact nonexistent in the sense that it does not take place in any physical environment, but is rather the imagined output of the circulation of a myriad blocks of data through the Net. This flow of data is translated into audible and visible signals, thus creating a "murmur" that the viewer can relate to her experience in interacting with other humans. The ambience of a room full of people engaged in conversation is artificially recreated and expanded beyond the boundaries of a real space. By extracting chats from the Internet, the murmur becomes global, reflecting the topics that are being shared by users around the world, in an improvised, ever-changing embodiment of the Zeitgeist, the spirit of the time, or even a certain stream of consciousness on a planetary scale. Fig. 2: Gregory Chatonsky, L'Attente - The Waiting (2007). Net artwork. Photo: Gregory Chatonsky.The idea of contemplation and receptiveness is also present in another artwork that elaborates on the concept of the Zeitgeist. L'Attente [The Waiting] (2007) by Gregory Chatonsky is a net art piece that feeds from the data on the Internet to create an open, never-ending fiction in real time [Fig.2: The Waiting]. In this case, the viewer experiences the artwork on her personal computer, as a sort of film in which words, images and sounds are displayed in a continuous sequence, driven by a slow paced soundtrack that confers a sense of unity to the fragmented nature of the work. The data is extracted in real time from several popular sites (photos from Flickr, posts from Twitter, sound effects from Odeo), the connection between image and text being generated by the network itself: the program extracts text from the posts that users write in Twitter, then selects some words to perform a search on the Flickr database and retrieve photos with matching keywords. The viewer is induced to make sense of this concatenation of visual and audible content and thus creates a story by mentally linking all the elements into what Chatonsky defines as "a fiction without narration" (Chatonsky, Flußgeist). The murmur here becomes a story, but without the guiding voice of a narrator. As with Listening Post, the viewer is placed in the role of a witness or a voyeur, subject to an endless flow of information which is not made of the usual contents distributed by mainstream media, but the personal and intimate statements of her peers, along with the images they have collected and the portraits that identify them in the social networks. In contrast to the overdetermination of History suggested by the term Zeitgeist, Chatonsky proposes a different concept, the spirit of the flow or Flußgeist, which derives not from a single idea expressed by multiple voices but from a "voice" that is generated by listening to all the different voices on the Net (Chatonsky, Zeitgeist). Again, the ambience is conceived as the combination of a myriad of fragments, which requires attentive contemplation. The artist describes this form of interacting with the contents of the piece by making a reference to the character of the angel Damiel in Wim Wenders’s film Wings of Desire (Der Himmel über Berlin, 1987): “to listen as an angel distant and proximate the inner voice of people, to place the hand on their insensible shoulder, to hold without being able to hold back” (Chatonsky, Flußgeist). The act of listening as described in Wenders's character illustrates several key aspects of the above mentioned artworks: there is, on the one hand, a receptiveness, carried out by the applications that extract data from the Internet, which cannot be “hold back” by the user, unable to control the flow that is evolving in front of her. On the other hand, the information she receives is always fragmentary, made up of disconnected parts which are, in the words of the artist Lisa Jevbratt, “rubbings ... indexical traces of reality” (1). Observing The observation of our environment takes us to consider the concept of landscape. Landscape, in its turn, acquires a double nature when we compare our relationship with the physical environment and the digital realm. In this sense, Mitchell Whitelaw stresses that while data moves at superhuman speed, the real world seems slow and persistent (Landscape). The overlapping of dynamic, fast-paced, virtual information on a physical reality that seems static in comparison is one of the distinctive traits of the following projects, in which the ambience is influenced by realtime data in a visual form that is particularly subtle, or even invisible to the naked eye. Fig. 3: Carlo Zanni, The Fifth Day (2009). Net artwork. Screenshot retrieved on 4/4/2009. Photo: Carlo Zanni. The Fifth Day (2009) by Carlo Zanni is a net art piece in which the artist has created a narration by displaying a sequence of ten pictures showing a taxi ride in the city of Alexandria [Fig.3: The Fifth Day]. Although still, the images are dynamic in the sense that they are transformed according to data retrieved from the Internet describing the political and cultural status of Egypt, along with data extracted from the user's own identity on the Net, such as her IP or city of residence. Every time a user accesses the website where the artwork is hosted, this data is collected and its values are applied to the photos by cloning or modifying particular elements in them. For instance, a photograph of a street will show as many passersby as the proportion of seats held by women in national parliament, while the reflection in the taxi driver's mirror in another photo will be replaced by a picture taken from Al-Jazeera's website. Zanni addresses the viewer's perception of the Middle East by inserting small bits of additional information and also elements from the viewer's location and culture into the images of the Egyptian city. The sequence is rendered as the trailer of a political thriller, enhanced by a dramatic soundtrack and concluded with the artwork's credits. As with the abovementioned projects, the viewer must adopt a passive role, contemplating the images before her and eventually observing the minute modifications inserted by the data retrieved in real time. Yet, in this case, the ambience is not made manifest by a constant buzz to which one must listen, but quite more subtly it is suggested by the fact that not even a still image is always the same. As if observing a landscape, the overall impression is that nothing has changed while there are minor transformations that denote a constant evolution. Zanni has explored this idea in previous works such as eBayLandscape (2004), in which he creates a landscape image by combining data extracted from several websites, or My Temporary Visiting Position from the Sunset Terrace Bar (2007), in which a view of the city of Ahlen (Germany) is combined with a real time webcam image of the sky in Naples (Italy). Although they may seem self-enclosed, these online, data-driven compositions also reflect the global ambience, the Zeitgeist, in different forms. As Carlo Giordano puts it: "Aesthetically, the work aims to a nearly seamless integration of mixed fragments. The contents of these parts, reflecting political and economical issues ... thematize actuality and centrality, amplifying the author's interest in what everybody is talking about, what happens hic et nunc, what is in the fore of the media and social discourse" (16-17). A landscape made of data, such as Zanni's eBayLandscape, is the most eloquent image of how an invisible layer of information is superimposed over our physical environment. Fig. 4: Clara Boj and Diego Díaz, Red Libre, Red Visible (2004-06). Intervention in the urban space. Photo: Lalalab.Artists Clara Boj and Diego Díaz, moreover, have developed a visualisation of the actual flows of data that permeate the spaces we inhabit. In Red Libre, Red Visible [Free Network, Visible Network] (2004-06), Boj and Díaz used Augmented Reality (AR) technology to display the flows of data in a local wireless network by creating AR marker tags that were placed on the street. A Carnivore client developed by the artists enabled anyone with a webcam pointing towards the marker tag and connected to the Wi-Fi network to see in real time the data packets flowing from their computer towards the tag [Fig.4: Red Libre]. The marker tags therefore served both as a tool for the visualisation of network activity as well as a visual sign of the existence of an open network in a particular urban area. Later on, they added the possibility of inserting custom made messages, 3D shapes and images that would appear when a particular AR marker tag was seen through the lens of the webcam. With this project, Boj and Díaz give the user the ability to observe and interact with a layer of her environment that was previously invisible and in some senses, out of reach. The artists developed this idea further in Observatorio [Observatory] (2008), a sightseeing telescope that reveals the existence of Wi-Fi networks in an urban area. In both projects, an important yet unnoticed aspect of our surroundings is brought into focus. As with Carlo Zanni's projects, we are invited to observe what usually escapes our perception. The ambience in our urban environment has also been explored by Julian Oliver, Clara Boj, Diego Díaz and Damian Stewart in The Artvertiser (2009-10), a hand-held augmented reality (AR) device that allows to substitute advertising billboards with custom made images. As Naomi Klein states in her book No Logo, the public spaces in most cities have been dominated by corporate advertising, allowing little or no space for freedom of expression (Klein 399). Oliver's project faces this situation by enabling a form of virtual culture jamming which converts any billboard-crowded plaza into an unparalleled exhibition space. Using AR technology, the artists have developed a system that enables anyone with a camera phone, smartphone or the customised "artvertiser binoculars" to record and substitute any billboard advertisement with a modified image. The user can therefore interact with her environment, first by observing and being aware of the presence of these commercial spaces and later on by inserting her own creations or those of other artists. By establishing a connection to the Internet, the modified billboard can be posted on sites like Flickr or YouTube, generating a constant feedback between the real location and the Net. Gregory Chatonsky's concept of the Flußgeist, which I mentioned earlier, is also present in these works, visually displaying the data on top of a real environment. Again, the user is placed in a passive situation, as a receptor of the information that is displayed in front of her, but in this case the connection with reality is made more evident. Furthermore, the perception of the environment minimises the awareness of the fragmentary nature of the information generated by the flow of data. Embodying In her introduction to the data visualisation section of her book Digital Art, Christiane Paul stresses the fact that data is “intrinsically virtual” and therefore lacking a particular form of manifestation: “Information itself to a large extent seems to have lost its 'body', becoming an abstract 'quality' that can make a fluid transition between different states of materiality” (Paul 174). Although data has no “body”, we can consider, as Paul suggests, any object containing a particular set of information to be a dataspace in its own. In this sense, a tendency in working with the Internet dataflow is to create a connection between the data and a physical object, either as the end result of a process in which the data has been collected and then transferred to a physical form, or providing a means of physically reshaping the object through the variable input of data. The objectification of data thus establishes a link between the virtual and the real, but in the context of an artwork it also implies a particular meaning, as the following examples will show.Fig. 5: Gregory Chatonsky, Le Registre - The Register (2007). Book shelf and books. Photo: Pau Waelder. In Le Registre [The Register] (2007), Gregory Chatonsky developed a software application that gathers sentences related to feelings found on blogs. These sentences are recorded and put together in the form a 500-page book every hour. Every day, the books are gathered in sets of 24 and incorporated to an infinite library. Chatonsky has created a series of bookshelves to collect the books for one day, therefore turning an abstract process into an object and providing a physical embodiment of the murmur of data that I have described earlier [Fig.5: Le Registre]. As with L'Attente, in this work Chatonsky elaborates on the concept of Flußgeist, by “listening” to a specific set of data (in a similar way as in Hansen and Rubin's Listening Post) and bringing it into salience. The end product of this process is not just a meaningless object but actually what makes this work profoundly ironic: printing the books is a futile effort, but also constitutes a borgesque attempt at creating an endless library of something as ephemeral as feelings. In a similar way, but with different intentions, Jens Wunderling brings the online world to the physical world in Default to Public (2009). A series of objects are located in several public spaces in order to display information extracted from users of the Twitter network. Wunderling's installation projects the tweets on a window or prints them in adhesive labels, while informing the users that their messages have been taken for this purpose. The materialisation of information meant for a virtual environment implies a new approach to the concept of ambiance as described previously, and in this case also questions the intimacy of those participating in social networks. As the artist puts it: "In times of rapid change concerning communication behavior, media access and competence, the project Default to Public aims to raise awareness of the possible effects on our lives and our privacy" (Wunderling 155). Fig. 6: Moisés Mañas, Stock (2009). Networked installation. Photo: Moisés Mañas. Finally, in Stock (2009), Moisés Mañas embodies the flow of data from stock markets in an installation consisting of several trench coats hanging from automated coat hangers which oscillate when the stock values of a certain company rise. The resulting movement of the respective trench coat simulates a person laughing. In this work, Mañas translates the abstract flow of data into a clearly understandable gesture, providing at the same time a comment on the dynamics of stock markets [Fig.6: Stock]. Mañas´s project does not therefore simply create a physical output of a specific information (such as the stock value of a company at any given moment), but instead creates a dynamic sculpture which suggests a different perception of an otherwise abstract data. On the one hand, the trenchcoats have a ghostly presence and, as they move with unnatural spams, they remind us of the Freudian concept of the Uncanny (Das Umheimliche) so frequently associated with robots and artificial intelligence. On the other hand, the image of a person laughing, in the context of stock markets and the current economical crisis, becomes an ironic symbol of the morality of some stockbrokers. In these projects, the ambience is brought into attention by generating a physical output of a particular set of data that is extracted from certain channels and piped into a system that creates an embodiment of this immaterial flow. Yet, as the example of Mañas's project clearly shows, objects have particular meanings that are incorporated into the artwork's concept and remind us that the visualisation of information in data art is always discretionary, shaped in a particular form in order to convey the artist's intentions. Beyond the Buzz The artworks presented in this article revealt that, beyond the murmur of sentences culled from chats and blogs, the flow of data on the Internet can be used to express our difficult relationship with the vast amount of information that surrounds us. As Mitchell Whitelaw puts it: “Data art reflects a contemporary worldview informed by data excess; ungraspable quantity, wide distribution, mobility, heterogeneity, flux. Orienting ourselves in this domain is a constant challenge; the network exceeds any overview or synopsis” (Information). This excess is compared by Lev Manovich with the Romantic concept of the Sublime, that which goes beyond the limits of human measure and perception, and suggests an interpretation of data art as the Anti-Sublime (Manovich 11). Yet, in the projects that I have presented, rather than making sense of the constant flow of data there is a sort of dialogue, a framing of the information under a particular interpretation. Data is channeled through the artworks's interfaces but remains as a raw material, unprocessed to some extent, retrieved from its original context. These works explore the possibility of presenting us with constantly renewed content that will develop and, if the artwork is preserved, reflect the thoughts and visions of the next generations. A work constantly evolving in the present continuous, yet also depending on the uncertain future of social network companies and the ever-changing nature of the Internet. The flow of data will nevertheless remain unstoppable, our ambience defined by the countless interactions that take place every day between our divided self and the growing number of machines that share information with us. References Agre, Phil. “Living Data.” Wired 2.11 (Nov. 1994). 30 April 2010 ‹http://www.wired.com/wired/archive/2.11/agre.if.html›. Chatonsky, Gregory. “Flußgeist, une fiction sans narration.” Gregory Chatonsky, Notes et Fragments 13 Feb. 2007. 28 Feb. 2010 ‹http://incident.net/users/gregory/wordpress/13-flusgeist-une-fiction-sans-narration/›. ———. “Le Zeitgeist et l'esprit de 'nôtre' temps.” Gregory Chatonsky, Notes et Fragments 21 Jan. 2007. 28 Feb. 2010 ‹http://incident.net/users/gregory/wordpress/21-le-zeigeist-et-lesprit-de-notre-temps/›. Giordano, Carlo. Carlo Zanni. Vitalogy. A Study of a Contemporary Presence. London: Institute of Contemporary Arts, 2005. Hansen, Mark, and Ben Rubin. “Listening Post.” Cyberarts 2004. International Compendium – Prix Ars Electronica 2004. Ed. Hannes Leopoldseder and Christine Schöpf. Ostfildern: Hate Cantz, 2004. 112-17. ———. “Babble Online: Applying Statistics and Design to Sonify the Internet.” Proceedings of the 2001 International Conference on Auditory Display, Espoo, Finland. 30 April 2010 ‹http://www.acoustics.hut.fi/icad2001/proceedings/papers/hansen.pdf›. Jevbratt, Lisa. “Projects.” A::minima 15 (2003). 30 April 2010 ‹http://aminima.net/wp/?p=93&language=en›. Klein, Naomi. No Logo. [El poder de las marcas]. Barcelona: Paidós, 2007. Manovich, Lev. “Data Visualization as New Abstraction and Anti-Sublime.” Manovich.net Aug. 2002. 30 April 2010 ‹http://www.manovich.net/DOCS/data_art_2.doc›. Paul, Christiane. Digital Art. London: Thames & Hudson, 2003. Whitelaw, Mitchell. “Landscape, Slow Data and Self-Revelation.” Kerb 17 (May 2009). 30 April 2010 ‹http://teemingvoid.blogspot.com/2009/05/landscape-slow-data-and-self-revelation.html›. ———. “Art against Information: Case Studies in Data Practice.” Fibreculture 11 (Jan. 2008). 30 April 2010 ‹http://journal.fibreculture.org/issue11/issue11_whitelaw.html›. Wunderling, Jens. "Default to Public." Cyberarts 2009. International Compendium – Prix Ars Electronica 2004. Ed. Hannes Leopoldseder, Christine Schöpf and Gerfried Stocker. Ostfildern: Hate Cantz, 2009. 154-55.

This paper presents a new approach for tele-fabrication where a physical object is scanned in one location and fabricated in another location. This approach integrates three-dimensional (3D) scanning, geometric processing of scanned data, and additive manufacturing technologies. In this paper, we focus on a set of direct geometric processing techniques that enable the tele-fabrication. In this approach, 3D scan data is directly sliced into layer-wise contours. Sacrificial supports are generated directly from the contours and digital mask images of the objects and the supports for Stereolithography Apparatus (SLA) processes are then automatically generated. The salient feature of this approach is that it does not involve any intermediate geometric models such as STL, polygons or non-uniform rational B-splines that are otherwise commonly used in prevalent approaches. The experimental results on a set of objects fabricated on several SLA machines confirms the effectiveness of the approach in faithfully tele-fabricating physical objects.