Dissertations / Theses on the topic 'Imagery'
To see the other types of publications on this topic, follow the link: Imagery.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Imagery.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Roberts, Ross. "Imagery perspectives, imagery ability, and personality." Thesis, Bangor University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505955.
Full text
2
Williams, Sarah E. "Athlete imagery ability and effective imagery use." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/892/.
Full textAbstract:
The aim of this thesis was to extend existing imagery ability literature. After reviewing the literature in Chapter 1, Chapter 2 validated and modified the Movement Imagery Questionnaire-Revised to provide a more comprehensive assessment of movement imagery ability. Known as the Movement Imagery Questionnaire-3, it was employed in Chapter 3 to examine the influence of prior movement and prior observation on an individual’s external visual imagery, internal visual imagery, and kinaesthetic imagery ability. The Sport Imagery Ability Questionnaire (SIAQ) was developed and extensively validated in Chapter 4 to provide a more comprehensive measure of athlete imagery ability. Chapter 5 demonstrated the SIAQ’s predictive validity by investigating the interplay between imagery ability, trait confidence, and challenge and threat appraisal tendencies. Finally Chapter 6 used the SIAQ as a screening tool when investigating whether imagery could be used to alter the appraisal of a stress-evoking scenario. Overall, the thesis has resulted in two new valid and reliable assessments of imagery ability. Additionally, this research extends imagery ability literature by establishing how imagery ability can be improved, demonstrating imagery ability’s association with various outcomes, and highlighting the importance of assessing different imagery content.
3
Nordin, Sanna Maria. "Imagery in dance." Thesis, University of Birmingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433643.
Full text
4
Nevins, Robert Pardy. "Georeferencing Unmanned Aerial Systems Imagery via Registration with Geobrowser Reference Imagery." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500378454106286.
Full text
5
Collins, Brian Harris. "Thermal imagery spectral analysis." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA320553.
Full textAbstract:
Thesis (M.S. in Systems Technology (Space Systems Operations)) Naval Postgraduate School, September 1996.Thesis advisor(s): R.C. Olsen, David Cleary. "September 1996." Includes bibliographical references (p. 159-161). Also available online.
6
Stuffle, L. Douglas. "Bathymetry from hyperspectral imagery." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA329389.
Full textAbstract:
Thesis (M.S. in Physics) Naval Postgraduate School, Dec. 1996.Thesis advisors, Richard Christopher Olsen, Newell Garfield. AD-A329 389. Includes bibliographical references (p. 73-75). Also available online.
7
Latendresse, Saskia. "Yeats and water imagery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40165.pdf.
Full text
8
Kenney, Douglas Charles. "Geometric and organic imagery /." Online version of thesis, 1989. http://hdl.handle.net/1850/11507.
Full text
9
Bell, S. Caroline (Sarah Caroline). "A vision of imagery." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22562.
Full textAbstract:
The following work provides a psychoanalytic exploration of the contribution of images to the psychological development of children, and their consequent impact on adult communication with both the self and the other. To begin, Jean Piaget's stage theory regarding the cognitive and perceptual development of infants is studied. Its consideration and critique allow me to establish the tenets which I wish to guide my work. For instance, while Piaget proposed the importance of sight in the development of children, he did not effectively distinguish vision, and its product visual imagery, from the conceptual framework of the written and spoken word. Thus, much like classical sociologists more generally, he was unable to assess imagery as a distinct form of communication and as a result subjected its character, role, and importance to misinterpretation. Its strong connection to the unconscious was at once underestimated and used as a means to undermine the intellectual complexity and significance of imagery.To further highlight the importance of visual imagery in the life of both child and adult in chapter 3 I examine the dominant manners in which imagery, primarily through the unconscious, influences and stabilizes our psyche. I have distinguished three forms of psychic activity through visual imagery; (1) simple fantasy, (2) complex fantasy, and (3) dreams. These processes are used at different times and for different reasons as demanded by the need to maintain a healthy balance within the id and the ego, between the two, and with others in one's social sphere. Sigmund Freud, Carl Jung, D. W. Winnicott and Charles Rycroft are among those theorists used to develop these thoughts. (Abstract shortened by UMI.)
10
Hume, Ian R. "ESP and mental imagery." Thesis, Coventry University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396468.
Full text
11
White, Alison Elizabeth. "Imagery and sport performance." Thesis, Bangor University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320414.
Full text
12
Nunns, Liesl. "Nature, imagery, and Alcaeus." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540167.
Full text
13
Fosnough-Osburn, Jennifer L. "Flight and Hand Imagery." Digital Commons @ Butler University, 1995. http://digitalcommons.butler.edu/grtheses/23.
Full textAbstract:
This paper will fill in the gaps in the current criticism regarding Toni Morrison's use of flight imagery and will also introduce a parallel line of criticism regarding Morrison's narrative focus on hands and hand gestures, an important and overlapping phenomenon in her novels. This phenomenon serves to elucidate Morrison's larger ideological project, in which she points out the core of one's life is creativity. Flight imagery and hand gestures work together to show a progression in Morrison's novels; thus, they must be considered together in order to completely comprehend characters and their actions as Morrison had intended.
14
Bruzadin, Nunes Ugo. "Mental Imagery and Tracking." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/theses/2471.
Full textAbstract:
This study aimed to better understand visuomotor tracking and spatial visual imagery. 101 Participants performed four tasks: A Manual Tracking Task (MTT), in which participants mouse-tracked the path of a circle, sometimes with occlusion. A Multi-Object Tracking task (MOT), in which participants tracked several objects simultaneously. The Sussex Cognitive Styles Questionnaire (SCSQ), in which participants self-reported their experience with imagery. A Mental Rotation Task (MRT) in which participants mentally rotate Tetris-like objects. The results demonstrated a significant correlation between the technical/spatial subscale of the SCSQ and the occluded MTT, the MRT, the MOT but not the visible MTT. A multiple regression showed that occluded MTT and the MRT together significantly predicted the spatial/technical subscale of the SCSQ above visible MTT and MOT. These findings support the claim that the cognitive resources behind mental imagery may also be recruited during other tasks that arguably draw on the need for internal visualization.
15
Narayanan, N. Hari. "Imagery, diagrams and reasoning /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487779120907533.
Full text
16
Boron, Jason M. "Imagery use in fencing." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2444.
Full text
17
Bilgin, Ali. "Scalable compression of imagery." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/289842.
Full textAbstract:
Recent image compression technologies value functionality as well as compression efficacy. In this dissertation, several compression methodologies that are both efficient and functional are introduced. The first compression system aims to compress three-dimensional data sets. In this system, existing two-dimensional zerotree coding techniques are extended to three dimensions, and are combined with integer wavelet transforms and context-based arithmetic coding. This system creates a unified framework for both lossless and lossy compression of three-dimensional data sets, and generates a scalable codestream. In our experiments, the system provided an average of 23% decrease in file size for representative three-dimensional data sets, compared to the best available two-dimensional lossless compression techniques. Strategies for transmission of JPEG2000 codestreams over packet-erasure channels are introduced next. These strategies are developed by allowing the channel coder to access information on the structure of the codestream generated by the source coder. Experimental results indicate that a carefully designed packetization strategy can provide significant performance improvement, especially when the channel experiences heavy erasures. Finally, utilization of JPEG2000 to compress scientific data is illustrated. In particular, a JPEG2000-based system that can be used to compress electrocardiogram (ECG) data is presented. Although this system utilizes the JPEG2000 image coding algorithm to compress one-dimensional ECG data, experimental results indicate that it compares favorably with specialized ECG compression methods in the literature.
18
Spiller, Mary Jane. "Mental imagery in synaesthesia." Thesis, University of East London, 2009. http://roar.uel.ac.uk/3092/.
Full textAbstract:
The current thesis addressed the question of whether an internally generated mental image can elicit a concurrent in grapheme colour synaesthesia; although there is experimental and anecdotal evidence that this is the case, to date this had not been systematically explored. As there are purportedly distinct object-based and spatial-based imagery processes it was necessary to explore the role different imagery processes may play. In Experiment 1 synaesthetes and matched control groups completed a grapheme-based object-imagery task against congruently and incongruently coloured backgrounds. Four synaesthetes, but none of the control groups, showed an effect of colour on task performance. In Experiment 2 and 3 synaesthetes (and matched controls for Experiment 2) completed a grapheme-based spatial-imagery task, with either the stimuli or background colour manipulated as before. In each experiment colour was found to interact with grapheme presentation format for two different synaesthetes. Experiments 1-3 therefore provided support for the idea that an internally generated mental image can elicit a concurrent. Importantly, the results suggested a difference in the way the concurrent generated from object or spatial imagery processes influenced task performance. Consequently Experiments 4 and 5 used a battery of comparable imagery tasks that had either an object or spatial rate-limiting imagery process. Manipulation of the task background colour again showed the variety of effects the concurrent generated with these different imagery processes can have on task performance. Overall the results of these experiments suggest that a concurrent can be elicited from both object and spatial imagery processes; important individual differences were found, and individual performance varied between tasks, suggesting the possible role of strategy effects. Models of synaesthesia need to be able to explain these differences and further studies are needed to address this issue of task approach.
19
Gormus, Esra Tunc. "Improved classification of remote sensing imagery using image fusion techniques." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601185.
Full textAbstract:
Remote sensing is a quick and inexpensive way of gathering information about the Earth. It enables one to constantly get updated information from satellite images for real-time local and global mapping of environmental changes. Current classification methods used for extracting relevant knowledge from this huge information pool are not very efficient because of the limited training samples and high dimensionality of the images. Information fusion is often used in order to improve the classification accuracy prior or after performing classification. However, these techniques cannot always successfully overcome the aforementioned issues. Therefore, in this thesis, new methods are introduced in order to increase the classification accuracy of remotely sensed data by means of information fusion techniques. This thesis is structured in three parts. In the first part, a novel pixel based image fusion technique is introduced to fuse optical and SAR image data in order to increase classification accuracy. Fused images obtained via conventional fusion methods may not contain enough information for subsequent processing such as classification or feature extraction. The proposed method aims to keep the maximum contextual and spatial information from the source data by exploiting the relationship between spatial domain cumulants and wavelet domain cumulants. The novelty of the method consists in integrating the relationship between spatial and wavelet domain cumulants of the source images into an image fusion process as well as in employing these wavelet cumulants for optimisation of weights in a Cauchy convolution based image fusion scheme. In the second part, a novel feature based image fusion method is proposed in order to increase the classification accuracy of hyperspectral images. An application of Empirical Mode Decomposition (EMD) to wavelet based dimensionality reduction is presented with an aim to generate the smallest set I of features that leads to better classification accuracy compared to single tech! niques. Useful spectral information for hyperspectral image classi6cation can be oj:>tained by applying the Wavelet Transform (WT) to each hyperspectral signature. As EMD has the ability to describe short term spatial changes in frequencies, it helps to get a better understanding of the spatial information of the signal. In order to take advantage of both spectral and spatial information, a novel dimensionality reduction method is introduced, which relies on using the wavelet transform of EMD features. This leads to better class separability and hence to better classification.
20
Alinder, Helena. "Semantic Image Segmentation on Clothing Imagery with Deep Neural Networks." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280788.
Full textAbstract:
Semantic Image Segmentation is a field within machine learning and computer vision, where the goal is to link each pixel in an image with a label. A successful segmentation will label all pixels that belong to an object with the correct label, and this prediction can be measured with a score known as mean Intersection over Union (mIoU). In a selling process of second-hand clothes, the clothes are placed on a mannequin and then photographed and post-processed. The post-processing algorithm attempts to remove the pole of the mannequin and crop out the mannequin itself to create a clear background. The algorithm uses traditional computer vision and requires specific lighting and position settings, and if these settings are faulty the algorithm performs bad. This thesis investigates how to conduct Semantic Image Segmentation with Deep Neural Networks for removing the pole and cropping out the mannequin, and if the networks perform better than the traditional algorithm on images with bad lighting. Two deep neural networks were investigated: DeepLabv3+ and GatedShape CNN. The models’ performances were measured by their mIoU score and evaluated on a regular clothing dataset and an augmented clothing dataset, consisting of images that the traditional algorithm had problems with segmenting. The conclusion of the thesis is that DeepLabv3+ performs better than Gated-Shape CNN on regular clothing imagery, reaching an overall mIoU of 91.81%, and the overall performances of the networks on regular clothing imagery are statistically significantly different. DeepLabv3+ also performs better than the traditional algorithm when segmenting augmented clothing imagery, images that the traditional algorithm had problems with segmenting, and the overall performances are statistically significantly different. There is no statistically significant difference between the overall performance of DeepLabv3+ and GSCNN and the overall performance of GSCNN and the traditional algorithm when segmenting augmented images.Semantisk bildsegmentering är ett ämne inom maskininlärning och dataanalys där målet är att koppla ihop varje pixel i en bild med en klass. En lyckad segmentering ger varje pixel som tillhör ett objekt samma korrekta klass och den förutspådda segmenteringen kan mätas med ett mått som kallas mean Intersection over Union (mIoU). I en säljprocess för second-hand kläder ingår det att kläderna placeras på en docka och fotograferas och efterbehandlas. Algoritmen som sköter efterbehandlingen försöker ta bort stolpen som dockan är placerad på och klippa ut dockan för att skapa en klar bakgrund. Algoritmen använder sig av traditionell bildanalys och behöver speciella ljus- och placeringsinställningar, annars har algoritmen svårt att göra bra segmenteringar. Den här studien undersöker hur semantisk bildsegmentering kan göras med hjälp av djupa neurala nätverk för att ta bort stolpen och klippa ut dockan, och den undersöker även om de neurala nätverken får bättre resultat än den traditionella algoritmen på bilder med dåliga ljusinställningar. Två djupa neurala nätverk undersöktes: DeepLabv3+ och Gated-Shape CNN. Nätverkens prestation mättes med deras mIoU och de utvärderas på ett dataset bestående av vanliga bilder på kläder och ett bestående av augmenterade bilder på kläder bilder som den traditionella algoritmen segmenterar dåligt. Slutsatsen för studien är att DeepLabv3+ presterar bättre än Gated-Shape CNN på vanliga bilder på kläder och får en mIoU på 91.81% och det är en statistisk signifikant skillnad mellan deras resultat. DeepLabv3+ får även bättre resultat än den traditionella algoritmen när det kommer till att segmentera augmenterade bilder, bilder som den traditionella algoritmen hade problem med att segmentera, och det är en statistisk signifikant skillnad mellan deras resultat. Det finns ingen statistisk signifikant skillnad mellan DeepLav3+ och GSCNN resultat eller GSCNN och den traditionella algoritmens resultat när det gäller segmentering av augmenterade bilder.
21
Durrenberger, Robert Earl 1951. "Absorption, Relaxation, and Imagery Instruction Effects on Thermal Imagery Experience and Finger Temperature." Thesis, North Texas State University, 1986. https://digital.library.unt.edu/ark:/67531/metadc332431/.
Full textAbstract:
A skill instruction technique based on cognitive behavioral principles was applied to thermal imagery to determine if it could enhance either subjective or physiological responsiveness. The effects of imagery instruction were compared with the effects of muscle relaxation on imagery vividness, thermal imagery involvement, and the finger temperature response. The subjects were 39 male and 29 female volunteers from a minimum security federal prison. The personality characteristic of absorption was used as a classification variable to control for individual differences. It was hypothesized that high absorption individuals would reveal higher levels of imagery vividness, involvement, and finger temperature change; that imagery skill instruction and muscle relaxation would be more effective than a control condition; and that the low absorption group would derive the greatest benefit from the imagery task instruction condition. None of the hypotheses was supported. Finger temperature increased over time during the experimental procedure but remained stable during thermal imagery. The results suggest that nonspecific relaxation effects may best account for finger temperature increases during thermal imagery. Results were discussed in relation to cognitive-behavioral theory and the characteristic of absorption.
22
Bolles, Gina. "An Exploratory study : the intersection of imagery ability, imagery use, and learning style /." Connect to title online (Scholars' Bank), 2008. http://hdl.handle.net/1794/7478.
Full text
23
Bolles, Gina 1981. "An Exploratory Study: The Intersection of Imagery Ability, Imagery Use, and Learning Style." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/7478.
Full textAbstract:
xi, 65 p. A print copy of this title is available through the UO Libraries. Search the library catalog for the location and call number.This study explores the intersection of the individual's imagery ability, imagery use in dance training and performance, and learning style. Thirty-four intermediate-level ballet and modem dance students at the University of Oregon completed the Movement Imagery Questionnaire-Revised (MIQ-R) and Kolb's Learning Style Inventory-3 (LSI-3). The four highest imagers and the four lowest imagers participated in interviews. Thirty of 34 subjects averaged MIQ-R scores indicating relative ease when imaging. On the LSI-3, 27 subjects reported a preference for "feeling" over ''thinking'' when gathering information for learning. Data revealed differences between perceived imagery ability and ability as determined by the MIQ-R for both high and low imagers. High imagers also recalled early exposure to imagery in dance while the low imagers did not. The research suggests that imagery may be a good pedagogic tactic for reaching "feeling" dance learners. This thesis includes my co-authored materials.
Adviser: Steven J Chatfield
24
Cili, Soljana. "Understanding cognitive changes in imagery rescripting : the role of the memory-imagery-self relationship." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/360205/.
Full textAbstract:
Imagery rescripting (IR) is a cognitive-behavioural technique that helps patients to modify the meaning they have attached to negative or traumatic experiences. Although it is effective in addressing memory-related intrusive images and in alleviating disorder-specific symptoms, there is little evidence as to how it works. The aim of this PhD project was to investigate the cognitive changes it promotes. Studies 1 and 2 found that memory recall influences individuals’ sense of self. They report higher state self-esteem, fewer achievement goals, and more recreation/exploration goals after recalling positive memories than after recalling negative ones. They also report more emotional self-cognitions after recalling memories from which they have learnt lessons compared to recalling memories from which they have not abstracted any meaning. Studies 3 and 4 found that exposure and IR may influence individuals’ perception of negative memories and the impact these memories have on them when recalled. After being exposed to such memories and after rescripting them, they perceive these memories as less negative and important for their sense of self. They also report higher state self-esteem and either a weaker or a more positive emotional response after recalling them. The findings suggest that memory recall triggers the activation of different self-representations and that IR may influence this process. By helping individuals modify the meaning they have attached to negative memories, IR may facilitate the integration of these memories within the sense of self. This may make the memories and associated self-representations less salient and less likely to be activated in the presence of distressing stimuli. The implications of these findings for imagery research and clinical practice are discussed.
25
Rondahl, Thomas. "Face Detection in Digital Imagery Using Computer Vision and Image Processing." Thesis, Umeå universitet, Institutionen för datavetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-51406.
Full textAbstract:
By adding a failure fault limit to an existing implementation of a face detection system application and a tolerance limit for detection time, a desired throughput for detected objects could be established. The aim of this thesis was to add an increased detection rate for pro le/partial faces while increasing the stability and run-time of the system. The results were obtained through an empirical analysis of test data which was compared between the implementation done for this thesis and the older implementation. The results showed an increase in detected faces (in low sized images) by 10% while also increasing the number of false-positives by 0.725 detections per average image. In large size image cases, an automatic scaling functionality was added, to decrease detection time and decrease false-negatives. The results indicated a decrease in average detection time from (old implementation) 15 seconds to 2 seconds, while still increasing positive detection with 23%, from an average of 42% to 65%. False-positives were also decreased from 5.8 to 0.2 detections per average image used in test.
26
Liu, Jian Guo. "Digital image processing for automatic lithological mapping using Landsat TM imagery." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46890.
Full text
27
Lieng, Henrik. "Surface modelling for 2D imagery." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/246467.
Full textAbstract:
Vector graphics provides powerful tools for drawing scalable 2D imagery. With the rise of mobile computers, of different types of displays and image resolutions, vector graphics is receiving an increasing amount of attention. However, vector graphics is not the leading framework for creating and manipulating 2D imagery. The reason for this reluctance of employing vector graphical frameworks is that it is difficult to handle complex behaviour of colour across the 2D domain. A challenging problem within vector graphics is to define smooth colour functions across the image. In previous work, two approaches exist. The first approach, known as diffusion curves, diffuses colours from a set of input curves and points. The second approach, known as gradient meshes, defines smooth colour functions from control meshes. These two approaches are incompatible: diffusion curves do not support the local behaviour provided by gradient meshes and gradient meshes do not support freeform curves as input. My research aims to narrow the gap between diffusion curves and gradient meshes. With this aim in mind, I propose solutions to create control meshes from freeform curves. I demonstrate that these control meshes can be used to render a vector primitive similar to diffusion curves using subdivision surfaces. With the use of subdivision surfaces, instead of a diffusion process, colour gradients can be locally controlled using colour-gradient curves associated with the input curves. The advantage of local control is further explored in the setting of vector-centric image processing. I demonstrate that a certain contrast enhancement profile, known as the Cornsweet profile, can be modelled via surfaces in images. This approach does not produce saturation artefacts related with previous filter-based methods. Additionally, I demonstrate various approaches to artistic filtering, where the artist locally models given artistic effects. Gradient meshes are restricted to rectangular topology of the control meshes. I argue that this restriction hinders the applicability of the approach and its potential to be used with control meshes extracted from freeform curves. To this end, I propose a mesh-based vector primitive that supports arbitrary manifold topology of the mesh.
28
Hovington, Cindy. "Motor imagery : does strategy matter?" Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1369.
Full text
29
Saxton, Linda K. "Computer imagery and creative energy /." Online version of thesis, 1987. http://hdl.handle.net/1850/10309.
Full text
30
Scott, Mark. "Speech imagery as corollary discharge." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42231.
Full textAbstract:
This thesis tests the theory that the sensory content of inner speech is constituted by corollary discharge. Corollary discharge is a signal generated by the motor system and is a “prediction” of the sensory consequences of the motor system’s actions. Corollary discharge normally functions in the nervous system to segregate self-caused sensations from externally-caused sensations. It does this, partially, by attenuating the nervous system’s response to self-caused sensations. This thesis argues that corollary discharge has been co-opted in humans to provide the sensory content of speech imagery. The thesis further tests the claim that the sensory detail contained in speech imagery is sufficiently rich and sufficiently similar to the representations of external speech sounds that the perception of external speech sounds can be influenced by inner speech. This thesis claims that the perception of external speech is altered because corollary discharge prepares the auditory system to hear those sensory features which the corollary-discharge signal carries.
These claims were tested experimentally by having participants engage in specific forms of speech imagery while categorizing external sounds. In one set of experiments, when external sound and speech imagery were in synchrony and were similar in content, the perception of the external sound was altered — the external sound came to be heard as matching the content of the speech imagery. In a second set of experiments, the presence of corollary discharge in speech imagery was tested. When a sensation matches a corollary discharge signal, the sensation tends to have an attenuated impact. This attenuation is a hallmark of corollary discharge. In this set of experiments, when participants’ speech imagery matched an external sound, the perceptual impact of the external sound was attenuated. Proper controls ensured that it was the degree of match between the speech imagery and the external sound that was responsible for this attenuation, rather than some extraneous factor.
31
Bovend'Eerdt, Thamar J. H. "Motor Imagery in Neurological Rehabilitation." Thesis, Oxford Brookes University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520927.
Full text
32
Buesnel, Eric. "Industrial Imagery and Contemporary Arts." Thesis, University of Derby, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521698.
Full text
33
馬婉婷 and Yuen-ting Olivia Ma. "Mental imagery & false memory." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41715391.
Full text
34
Li, Gregory Kenneth, and 李群雄. "Tantric symbolism in Vajrayogini imagery." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45166225.
Full text
35
Arnold, Lizabeth A. "Imagery use by elite divers." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1293519.
Full text
36
Williams, John Denzil. "Psychophysiological correlates of dynamic imagery." Thesis, University of Warwick, 1995. http://wrap.warwick.ac.uk/2312/.
Full textAbstract:
Dynamic imagery refers both to the imaginary transformation of objects and to the imagination of bodily movements. It is hypothesised that dynamic imagery involves both motoric and visuo-spatial representations and to demonstrate that they operate at the cortical level of the brain, subjects' electroencephalograms (EEG) were recorded whilst they performed a variety of dynamic imagery tasks. It was further hypothesised that cortical activity recorded during these tasks would vary as a function of individual differences in imagery ability. Due to the lack of consensus on the validity both of 'objective' and 'subjective' measures of imagery ability, both kinds of instrument were used in this thesis. It was hoped that the EEG would provide objective evidence of the validity of these measures. During imaginary transformation there was an increase in cortical activation over prefrontal and parieto-occipital cortex, suggesting that high-level motoric and visuo-spatial representations are active during this task. No difference was observed in the EEG of subjects classified according to subjective report but differences were observed when they were classified according to task performance. During movement imagery, an increase in activation over the pre-frontal and parietooccipital cortex was observed, supporting the involvement of motoric and visuo-spatial representations. However, significant results were only obtained when the experimental task imposed sufficiently high cognitive demands on subjects. Only objective measures of imagery ability were correlated to imagery related changes in cortical activity. These studies demonstrate the difficulty of modifying behavioural tasks to suit the restrictions of the psychophysiological environment. It is suggested that while having some benefit, the EEG presents major difficulties to the investigation of dynamic imagery. Given the restrictions of the experimental environment only simple movements are possible, thereby limiting the scope of experimental design.
37
Dumville, Mark. "Geo-referencing : Earth Observation imagery." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282598.
Full text
38
Gugan, David John. "Topographic mapping from SPOT imagery." Thesis, University College London (University of London), 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295733.
Full text
39
Hennessy, Cecily. "Imagery of children in Byzantium." Thesis, Courtauld Institute of Art (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407392.
Full text
40
Sandys-Renton, Jane Belinda Elizabeth. "Segmentation techniques for SAR imagery." Thesis, University of Liverpool, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317224.
Full text
41
Emberton, Simon. "Methods for enhancing underwater imagery." Thesis, Queen Mary, University of London, 2017. http://qmro.qmul.ac.uk/xmlui/handle/123456789/29605.
Full textAbstract:
This thesis explores underwater imaging solutions in order to alleviate the poor contrast and the distortion in the perception of colour caused by the processes of scattering and absorption. We demonstrate through simulated experiments that imaging systems with higher spectral resolution than RGB could be useful for underwater imaging tasks such as estimating illumination and spectral reflectance values. We also tested hyperspectral imagers in real world experiments and found that the current technology is limited for underwater image enhancement applications. To address the problem of poor visibility in underwater scenes we introduce dehazing methods for underwater RGB images and videos. Current underwater dehazing methods suffer from limitations such as estimated parameters being biased towards pixels of bright objects in a scene and artefacts being created in regions that contain pure haze. Bright objects in a scene are avoided by using texture features during the estimation of parameters and local bias is avoided by taking information from an image at different spatial resolutions. We inhibit noise and artefacts being created in the pure haze regions by segmenting these areas and treating them as a special case. We address the spectral distortion present in underwater scenes by applying a water-type dependent white balancing step. We also demonstrate the application of our method to underwater videos with a weighted temporal smoothing of the estimated parameters and a Gaussian normalisation step that ensures segmentation of pure haze regions is stable across frames. We evaluate our methods both on quantitative metrics and through subjective experiments and demonstrate an improved performance in comparison to the state of the art in underwater image and video enhancement. We also show how no-reference underwater image quality assessment metrics do not always correspond with human judgement and provide suggestions on how they could be improved.
42
Kosteli, Maria-Christina. "Imagery use in older adults." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6780/.
Full textAbstract:
Underpinned by Bandura’s social-cognitive theory (SCT), this thesis examined the perceptions of physical activity (PA) in healthy and unhealthy older adults, and examined imagery as a potential strategy to promote PA. Focus groups with healthy older adults (Chapter 2) and those diagnosed with chronic obstructive pulmonary disease (COPD) (Chapter 3) examined how PA is incorporated into daily living, and the unique barriers and enablers of PA in older adults. The subsequent chapters focus on the role of imagery as a strategy to increase PA. Using the revised applied model of deliberate imagery use as a framework, Chapter 4 explored where, when, what, and why older adults image PA. Based on Chapter 2 and 3’s finding that older adults use a range of imagery types and functions, and the importance of self-regulation, Chapter 5 investigated how self-regulatory imagery (i.e., images of goals and planning) related with social-cognitive variables, enjoyment, and PA. Overall, the thesis recognises the importance of SCT in explaining the unique challenges older adults face in relation to PA while accounting for contextual factors including PA level, disease severity, and employment status. The thesis also demonstrates imagery as a potential strategy for promoting PA in older adults.
43
Matarese, Joseph R. (Joseph Richard). "Topographic reconstruction from radar imagery." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/59857.
Full text
44
Lock, Andrew. "Digital watermarking of precision imagery." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=214152.
Full textAbstract:
There has been a growing interest in reversible watermarking of medical images re- cently for security reasons. Typically, humans are assumed to be the end user of watermarked images, however in many cases machine vision processes may be addi- tional consumers. Therefore, any watermarking performed on these images must be imperceptible to not only human users, but also these machine vision processes. The objective of this thesis is to understand the extent to which reversible water- marking affects the ability of computer vision algorithms to perform correctly. We address both the effect on primitive feature detection and on complete machine vi- sion processes, and investigate the ability to predict these effects using Image Quality Metrics (IQMs). Additionally, we describe the development of a new watermarking algorithm. We perform primitive feature detection on original and watermarked images, com- paring the output feature maps. Subsequently we use statistical modelling to allow prediction of feature map differences based on various IQMs of a watermarked image. We then conduct a similar experiment using manually specified feature maps and edge detectors across their full parameter space. Watermarking algorithms showing the least impact are highlighted and prediction of poorer performance a priori is investigated. In many cases watermarking is shown to cause a significant difference in the output feature map, however prediction of the difference is possible with excellent discrim- ination in many cases. A validation system for utilising these results in practical applications is presented. Three machine vision processes are investigated using a range of watermarking al- gorithms and embedding capacities – iris recognition, medical image registration, and diabetic retinopathy assessment. Significant differences are found in some cases, however at low capacities the iris and retinopathy processes show no significant dif- ferences. In addition, prediction of erroneous results for the retinopathy process was possible with excellent discrimination.
45
McDonnell, William Francis. "DIGITAL ENHANCEMENT OF COLOR IMAGERY." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275337.
Full text
46
Ando, Taku. "Kinesthetic imagery and choreographic praxis." Thesis, City University London, 2014. http://openaccess.city.ac.uk/5907/.
Full textAbstract:
The aim of this research project is to investigate the practical application of some ideas regarding how dancers can create certain types of mental images that are formed through their kinesthetic perception, which we shall define as ‘kinesthetic images’, and to study the spatial or geometric structures that are often utilized in choreographic and pedagogical dance praxis. The term kinesthetic image is a label for a certain types of mental imagery that are generated through the sensation of moving body, as well as dynamic qualities that are kinesthetically perceived from movement. Dancers can create mental images from these type of kinesthetic experiences by enhancing their sensory awareness and sensorimotor knowledge, which are both innate and acquired through training. My dance practice also concerns a development of an improvisation method in which dancers explore an interaction between these kinesthetic images and a visualization of morphodynamic volume (hereafter MDV), which is a three-dimensional volume in a constant state of flux. The term intensive space will be introduced to give a definition to this related type of spatial categorization, one which involves continuous and dynamic transformations of both danced space and the images associated with it, such as stretching, folding and connectivity. This spatial paradigm will be contrasted with its opposite, namely extensive spaces or geometries, which involve the division and subdivision of danced space in terms of metric properties like points, lines, and planes. The first chapter is a review of how choreographically structured movement has been historically conceived and created using spatial concepts and imagery which involve the spatial structures of these types of extensive geometries. This historical analysis commences during the Enlightenment, at a time when the aesthetics and basic movement vocabulary of classical ballet were in a state of genesis. The discussion of geometric paradigms in dance practice continues through this chapter chronologically through to modernity, looking at the characteristics of the choreographic practices of George Balanchine, Rudolf Laban, Merce Cunningham, and William Forsythe. The second chapter discusses the Improvisation Technologies conceived by Forsythe as a paradigmatic example of the utilization of kinesthetic images and extensive geometry for the purposes of movement creation during dancers’ improvisation. This analysis of Forsythe’s methodology brings forth with it questions as to how choreographic praxis can utilize intensive space as an alternative geometric paradigm with which dancers can interact for the generation of movement. This discussion is rooted in some theoretical elements, such as phenomenology, the philosophy of perception, cognitive science, and mathematical topology, which creates a theoretical foundation for an improvisational practice that suggests intensive spatial structure as an alternative ideational mechanism for movement generation. The third chapter is a documentation of the chronological development of a pedagogical improvisation method, based on these concepts of kinesthetic imagery and intensive spatial structuring. For the purposes of investigating both choreographic and pedagogical aspects, an extensive period of practice-based research resulted in the production of two improvisatory performances entitled Mix:01 and Mix:02. These performances are discussed and are coupled with the critical observation of the preceding series of studio sessions. Both the performances and the creative processes that led to them are subsequently analysed for the purposes of isolating effective practice.
47
Campos, García Alfredo, and Clara Isabel Fernández. "Mental imagery in link system." Pontificia Universidad Católica del Perú, 2013. http://repositorio.pucp.edu.pe/index/handle/123456789/100007.
Full textAbstract:
Four experiments were carried out to explore the intluence of imaging capacity and image type (normal or bizarre) on immediate and delayed recall of word lists. Experiments 1 and 2 studied immediate serial recall of 16- and 28-item word lists, and experiments 3 and 4 studied serial recall of 16- and 28- item word lists one week after their presentation. Imaging capacity, as measured by the Space Scale of the Primary Mental Abilities Test, affected immediate recall of long lists. Image type affected immediate recall of short lists. In four experiments there was a significant difference between the performance of subjects who used mental imagery for recall and those who did not.El artículo estudia a través de cuatro experimentos la influencia de la capacidad de los sujetos para formar imágenes y del tipo de imagen que utilizan, en el recuerdo serial inmediato y retardo de palabras. En los experimentos 1 y 2 se analiza la influencia de estas variables en el recuerdo serial inmediato de listas cortas (16 ítems) y largas (28 ítems), y en los experimentos 3 y 4 se investiga la influencia de las mismas variables en el recuerdo serial retardado (una semana). La capacidad de los sujetos de formar imágenes, medida a través de la Escala Espacial del Test de Aptitudes Mentales Primarías, influyó en el recuerdo serial inmediato de listas largas. El tipo ele imagen (normal y rara) influyó en el recuerdo inmediato serial de listas cortas. En todos los experimentos se encontró diferencia entre los sujetos que utilizaron imágenes mentales y los que no las utilizaron.
48
Gebhardt, Mark William Dewdney. "Speckle reduction in SAR imagery." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/18786.
Full textAbstract:
Synthetic Aperture Radar (SAR) is a popular tool for airborne and space-borne remote sensing. Inherent to SAR imagery is a type of multiplicative noise known as speckle. There are a number of different approaches which may be taken in order to reduce the amount of speckle noise in SAR imagery. One of the approaches is termed post image formation processing and this is the main concern of this thesis. Background theory relevant to the speckle reduction problem is presented. The physical processes which lead to the formation of speckle are investigated in order to understand the nature of speckle noise. Various statistical properties of speckle noise in different types of SAR images are presented. These include Probability Distribution Functions as well as means and standard deviations. Speckle is considered as a multiplicative noise and a general model is discussed. The last section of this chapter deals with the various approaches to speckle reduction. Chapter three contains a review of the literature pertaining to speckle reduction. Multiple look methods are covered briefly and then the various classes of post image formation processing are reviewed. A number of non-adaptive, adaptive and segmentation-based techniques are reviewed. Other classes of technique which are reviewed include Morphological filtering, Homomorphic processing and Transform domain methods. From this review, insights can be gained as to the advantages and disadvantages of various methods. A number of filtering algorithms which are either promising, or are representative of a class of techniques, are chosen for implementation and analysis.
49
Kim, Jungwhan John. "Road detection on radar imagery." Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/53080.
Full textAbstract:
A facet based road network detection procedure is described for radar imagery. The procedure includes a line detection part and a road detection and connection part. The line detection part analytically detects linear features using a facet Valley finding technique. Valleys are defined as zero crossings of the first directional derivatives of a bicubic facet model taken in a direction extremizing the second directional derivative. The road detection and connection part statistically screens the linear features on a component by component basis, and then optimally connects the screened linear features using a dynamic programming algorithm.
This thesis also includes as a preprocessing technique for noisy images, an adaptive noise removal algorithm, and suggests a practical method of estimating a local noise variance.Master of Science
50
Ma, Yuen-ting Olivia. "Mental imagery & false memory." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41715391.
Full text