Academic literature on the topic 'Handheld laser scanning'

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Journal articles on the topic "Handheld laser scanning"

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DuBose, Theodore, Derek Nankivil, Francesco LaRocca, et al. "Handheld adaptive optics scanning laser ophthalmoscope." Optica 5, no. 9 (2018): 1027. http://dx.doi.org/10.1364/optica.5.001027.

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Hagan, Kristen, Theodore DuBose, David Cunefare, et al. "Multimodal handheld adaptive optics scanning laser ophthalmoscope." Optics Letters 45, no. 17 (2020): 4940. http://dx.doi.org/10.1364/ol.402392.

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Brusak, Ivan, Krzysztof Bakuła, and Nataliia Savchuk. "GEODESY, CARTOGRAPHY, AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY, AND AERIAL PHOTOGRAPHY 98,2023, no. 98 (2023): 15–23. http://dx.doi.org/10.23939/istcgcap2023.98.015.

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Research presents modern technologies of 3D measurements in shipbuilding production parts. Special template of the keel detail was made for the research. The detail measurements with a laser tracker, laser scanning, industrial photogrammetry and handheld scanning are performed. Leica Absolute Tracker AT960-LR was used for Laser tracker measurements. Laser scanning was performed with Z+F Imager 5010. Nikon D2Xs photo camera was used for Industrial photogrammetry. Handheld scanner DPI-7 from DotProduct was also used for 3D measurements of the details. All collected data were imported into 3DResh
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Komissarov, A. V., A. V. Remizov, M. M. Shlyakhova, and K. K. Yambaev. "Handheld Laser Scanner Research." Geodesy and Cartography 952, no. 10 (2019): 47–54. http://dx.doi.org/10.22389/0016-7126-2019-952-10-47-54.

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The authors consider hand-held laser scanners, as a new photogrammetric tool for obtaining three-dimensional models of objects. The principle of their work and the newest optical systems based on various sensors measuring the depth of space are described in detail. The method of simultaneous navigation and mapping (SLAM) used for combining single scans into point cloud is outlined. The formulated tasks and methods for performing studies of the DotProduct (USA) hand-held laser scanner DPI?8X based on a test site survey are presented. The accuracy requirements for determining the coordinates of
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Bleier, M., and A. Nüchter. "TOWARDS ROBUST SELF-CALIBRATION FOR HANDHELD 3D LINE LASER SCANNING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W8 (November 13, 2017): 31–36. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w8-31-2017.

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This paper studies self-calibration of a structured light system, which reconstructs 3D information using video from a static consumer camera and a handheld cross line laser projector. Intersections between the individual laser curves and geometric constraints on the relative position of the laser planes are exploited to achieve dense 3D reconstruction. This is possible without any prior knowledge of the movement of the projector. However, inaccurrately extracted laser lines introduce noise in the detected intersection positions and therefore distort the reconstruction result. Furthermore, whe
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Sadeghi, F., H. Arefi, A. Fallah, and M. Hahn. "3D BUILDING FAÇADE RECONSTRUCTION USING HANDHELD LASER SCANNING DATA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-1-W5 (December 11, 2015): 625–30. http://dx.doi.org/10.5194/isprsarchives-xl-1-w5-625-2015.

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3D The three dimensional building modelling has been an interesting topic of research for decades and it seems that photogrammetry methods provide the only economic means to acquire truly 3D city data. According to the enormous developments of 3D building reconstruction with several applications such as navigation system, location based services and urban planning, the need to consider the semantic features (such as windows and doors) becomes more essential than ever, and therefore, a 3D model of buildings as block is not any more sufficient. To reconstruct the façade elements completely, we e
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Bubniak, Ihor, Andrii Bubniak, Anatolii Vivat, Mariia Oliinyk, Taras Marko, and Kateryna Boiko. "LASER SCANNING OF MLYNKY CAVE: PRELIMINARY RESULTS." SCIENTIFIC PAPERS OF DONNTU Series: “The Mining and Geology”, no. 1(31)-2(32) (2024): 104–10. https://doi.org/10.31474/2073-9575-2024-1(31)-2(32)-104-110.

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Objective. To investigate Mlynky Cave using advanced laser scanning technologies to create a high-precision three-dimensional model, enabling detailed examination of its geological features, morphology, and spatial structure. Methods. Data collection was conducted using the handheld laser scanner STONEX X120 GO, which offers high accuracy and measurement speed. The process encompassed scanner preparation, execution of scans, generation of point clouds, their processing, and visualization in the form of a 3D model. Results. A detailed 3D model of a section of the cave was obtained with a resolu
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Muhojoki, Jesse, Daniella Tavi, Eric Hyyppä, et al. "Benchmarking Under- and Above-Canopy Laser Scanning Solutions for Deriving Stem Curve and Volume in Easy and Difficult Boreal Forest Conditions." Remote Sensing 16, no. 10 (2024): 1721. http://dx.doi.org/10.3390/rs16101721.

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The use of mobile laser scanning for mapping forests has scarcely been studied in difficult forest conditions. In this paper, we compare the accuracy of retrieving tree attributes, particularly diameter at breast height (DBH), stem curve, stem volume, and tree height, using six different laser scanning systems in a managed natural boreal forest. These compared systems operated both under the forest canopy on handheld and unmanned aerial vehicle (UAV) platforms and above the canopy from a helicopter. The complexity of the studied forest sites ranged from easy to difficult, and thus, this is the
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Yıldırım, I. D., B. Sarioglu, and Y. D. Gokdel. "3D Printed Head for a Handheld Laser Scanning Confocal Microscope." Instruments and Experimental Techniques 64, no. 2 (2021): 301–7. http://dx.doi.org/10.1134/s0020441221010176.

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LaRocca, Francesco, Derek Nankivil, Sina Farsiu, and Joseph A. Izatt. "Handheld simultaneous scanning laser ophthalmoscopy and optical coherence tomography system." Biomedical Optics Express 4, no. 11 (2013): 2307. http://dx.doi.org/10.1364/boe.4.002307.

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Dissertations / Theses on the topic "Handheld laser scanning"

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Gustafsson, Amanda, and Olov Wängborg. "Mätosäkerhet vid digital terrängmodellering med handhållen laserskanner : Undersökning av den handhållna laserskannern ZEB-REVO." Thesis, Högskolan i Gävle, Samhällsbyggnad, GIS, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-26841.

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En digital terrängmodell (DTM) är en representation av enbart själva markytan. Det finns flera metoder för att framställa DTM:er, där laserskanning har blivit en alltmer vanlig metod. Inom laserskanning är flygburen laserskanning (FLS) en flitigt använd metod, då metoden har fördelen av att kunna täcka stora områden på kort tid. Det finns dock nackdelar med FLS då datainsamlingen kan bli bristfällig i t.ex. skogsområden, där laserstrålar inte kan tränga igenom tät vegetation. Här kan handhållen laserskanning (HLS) vara ett bra alternativ då HLS går snabbt och inte behöver samma omfattande plan
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Andersson, Elias. "Dokumentation av en trafikolycka med handhållen laserskanning och UAS-fotogrammetri : En utvärdering av punktmolnens lägesosäkerhet och visuella kvalitet." Thesis, Högskolan i Gävle, Samhällsbyggnad, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-36472.

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I samband med en trafikolycka är det ofta viktigt att återställa platsen till det normala så snabbt som möjligt. Emellanåt måste olycksplatsen dokumenteras för att orsaken till olyckan ska kunna utredas i ett senare skede. Traditionellt har detta arbete utförts genom att fotografera platsen och mäta olika avstånd. På senare tid har även terrester laserskanning kommit att bli ett tillförlitligt alternativ. Med det sagt är det tänkbart att även fotogrammetri och andra typer av laserskanning skulle kunna användas för att uppnå liknande resultat.  Syftet med denna studie är att utforska hur handhå
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Kumar, Karthik. "Microelectromechanical handheld laser-scanning confocal microscope: application to breast cancer imaging." 2009. http://hdl.handle.net/2152/6974.

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Demographic data indicate that 60% of 6.7 million annual global cancer mortalities and 54% of 10.8 million new patients are in developing nations, unable or unwilling to avail of invasive screening tests that are the current norm. For most cancers, survival rate is strongly dependent on early detection, highlighting the need for improved screening methods. Studies have shown that cancers can be identified based on distinct sub-cellular morphological features and expression levels of specific molecular markers. Since 85% of cancers are known to originate in the epithelium, portable in vivo imag
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Bhatla, Ankit. "Generating as-built 3D models from photos taken by handheld digital camera." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-12-4618.

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As-built documentation is an essential set of records, consisting of construction drawings, specifications and equipment location, which are kept for facility management purposes. These documents are constantly being created and modified throughout the life of a project. This process is usually manual and fraught with errors, which inhibits reliable decision making. Technological advancements have made it possible to generate 3D models to assess as-built conditions for construction monitoring purposes, such as verifying conformance to baseline project schedules and contract specifications. For
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Nankivil, Derek. "Development of Swept Source Optical Coherence Tomography and Adaptive Optics Scanning Laser Ophthalmoscopy: Improved Imaging Speed and Handheld Applications." Diss., 2016. http://hdl.handle.net/10161/12197.

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<p>Optical coherence tomography (OCT) is a noninvasive three-dimensional interferometric imaging technique capable of achieving micrometer scale resolution. It is now a standard of care in ophthalmology, where it is used to improve the accuracy of early diagnosis, to better understand the source of pathophysiology, and to monitor disease progression and response to therapy. In particular, retinal imaging has been the most prevalent clinical application of OCT, but researchers and companies alike are developing OCT systems for cardiology, dermatology, dentistry, and many other medical and indus
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LaRocca, Francesco. "Development of Multi-modal and Super-resolved Retinal Imaging Systems." Diss., 2016. http://hdl.handle.net/10161/12239.

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<p>Advancements in retinal imaging technologies have drastically improved the quality of eye care in the past couple decades. Scanning laser ophthalmoscopy (SLO) and optical coherence tomography (OCT) are two examples of critical imaging modalities for the diagnosis of retinal pathologies. However current-generation SLO and OCT systems have limitations in diagnostic capability due to the following factors: the use of bulky tabletop systems, monochromatic imaging, and resolution degradation due to ocular aberrations and diffraction. </p><p>Bulky tabletop SLO and OCT systems are incapable of ima
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Book chapters on the topic "Handheld laser scanning"

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Plumb, Caolan, Farzad Pour Rahimian, Diptangshu Pandit, Hannah Thomas, and Nigel Clark. "A Framework for Realistic Virtual Representation for Immersive Training Environments." In CONVR 2023 - Proceedings of the 23rd International Conference on Construction Applications of Virtual Reality. Firenze University Press, 2023. http://dx.doi.org/10.36253/10.36253/979-12-215-0289-3.26.

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As mixed-reality (XR) technology becomes more available, virtually simulated training scenarios have shown great potential in enhancing training effectiveness. Realistic virtual representation plays a crucial role in creating immersive experiences that closely mimic real-world scenarios. With reference to previous methodological developments in the creation of information-rich digital reconstructions, this paper proposes a framework encompassing key components of the 3D scanning pipeline. While 3D scanning techniques have advanced significantly, several challenges persist in the field. These c
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Plumb, Caolan, Farzad Pour Rahimian, Diptangshu Pandit, Hannah Thomas, and Nigel Clark. "A Framework for Realistic Virtual Representation for Immersive Training Environments." In CONVR 2023 - Proceedings of the 23rd International Conference on Construction Applications of Virtual Reality. Firenze University Press, 2023. http://dx.doi.org/10.36253/979-12-215-0289-3.26.

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As mixed-reality (XR) technology becomes more available, virtually simulated training scenarios have shown great potential in enhancing training effectiveness. Realistic virtual representation plays a crucial role in creating immersive experiences that closely mimic real-world scenarios. With reference to previous methodological developments in the creation of information-rich digital reconstructions, this paper proposes a framework encompassing key components of the 3D scanning pipeline. While 3D scanning techniques have advanced significantly, several challenges persist in the field. These c
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Sahin, Cumhur, Bahadır Ergun, and Furkan Bilucan. "Terrestrial Backpack Laser Scanner Usage in Mobile Surveying: A Case Study for Cadastral Surveying." In Point Cloud Generation and Its Applications [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1006158.

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There are several different methods in laser scanning technology including terrestrial laser scanner (TLS), airborne laser scanner (ALS), and mobile laser scanner (MLS). In addition to these scanners, there are personal laser scanners (PLS). PLS are examined under two main categories as handheld personal laser scanner (HPLS) and backpack personal laser scanner (BPLS) which are the latest additions to these laser scanning technologies. Today, the use of personal laser scanner technology is a popular research and application topics. The primary advantage of PLS lies in its high mobility in diffe
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Puniach, E., and K. Widuch. "Comparative analysis of 3D archaeological documentation utilizing terrestrial laser scanning along with handheld scanning and photogrammetry." In Topical Issues of Rational Use of Natural Resources 2019. CRC Press, 2019. http://dx.doi.org/10.1201/9781003014577-32.

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Bucholz Richard, Macneil William, Fewings Paul, et al. "Automated Rejection of Contaminated Surface Measurements for Improved Surface Registration in Image Guided Neurosurgery." In Studies in Health Technology and Informatics. IOS Press, 2000. https://doi.org/10.3233/978-1-60750-914-1-39.

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Most image guided Neurosurgery employs adhesively mounted external fiducials for registration of medical images to the surgical workspace. Due to high logistical costs associated with these artificial landmarks, we strive to eliminate the need for these markers. At our institution, we developed a handheld laser stripe triangulation device to capture the surface contours of the patient&amp;rsquo;s head while oriented for surgery. Anatomical surface registration algorithms rely on the assumption that the patient&amp;rsquo;s anatomy bears the same geometry as the 3D model of the patient construct
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Conference papers on the topic "Handheld laser scanning"

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Jadviscok, Petr, Tereza Jadviscokova, Rostislav Dandos, and Jiri Plesnik. "THE POSSIBILITIES OF USING THE HANDHELD SCANNER FOR THE REAL ESTATE CADASTRE." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/2.1/s09.29.

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Mobile handheld laser scanning is already an established technology in today's surveying practice. Mobile handheld scanners are mostly used for surveying and 3D rendering of indoor spaces. However, the subject of this paper will be the area of real estate cadastre. The aim of this paper is to verify the capabilities of mobile handheld laser scanning technology for cadastre of real estate purposes. The paper will focus specifically on surveying activities related to the production of a survey sketch for designation of the building on the cadastral map. The real accuracy of the survey and the ef
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Llabani, A., and N. Kopliku. "Application of handheld mobile terrestrial laser scanning for cultural heritage documentation." In 7th International Conference on Geotechnical and Geophysical Site Characterization. CIMNE, 2024. http://dx.doi.org/10.23967/isc.2024.082.

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Nankivil, Derek, Francesco LaRocca, Sina Farsiu, et al. "Handheld adaptive optics scanning laser ophthalmoscope for in vivo imaging of adults and infants (Conference Presentation)." In Ophthalmic Technologies XXVIII, edited by Fabrice Manns, Per G. Söderberg, and Arthur Ho. SPIE, 2018. http://dx.doi.org/10.1117/12.2289124.

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Wei, Franklin, Christian Viehland, Yuankai K. Tao, Anthony N. Kuo, Joseph A. Izatt, and Al-Hafeez Dhalla. "Double-clad fiber-based handheld confocal scanning laser ophthalmoscope using a novel hybrid spiral scan pattern." In Ophthalmic Technologies XXXII, edited by Daniel X. Hammer, Karen M. Joos, and Daniel V. Palanker. SPIE, 2022. http://dx.doi.org/10.1117/12.2608347.

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Hagan, Kristen, Theodore DuBose, David Cunefare, et al. "Wavefront sensorless multimodal handheld adaptive optics scanning laser ophthalmoscope for in vivo imaging of human retinal cones." In Ophthalmic Technologies XXX, edited by Fabrice Manns, Per G. Söderberg, and Arthur Ho. SPIE, 2020. http://dx.doi.org/10.1117/12.2544407.

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Hessler, Deike, and Thomas Hofmann. "An approach to designing an ergnomic handheld 3D laser scanner." In 14th International Conference on Applied Human Factors and Ergonomics (AHFE 2023). AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1003398.

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Due to ever higher quality and safety standards, the demands on the flexibility of 3D scanners are also growing. Mobile scanning is particularly interesting for confined situations.The need for a hand-held product with which the user should be able to work comfortably for as long as possible expands the interest of a technical advance by the need for good ergonomics. While a team of engineers from ZEISS oversaw the technical implementation, industrial designers were brought into the process to support the ergonomic implementation and the adaptation to the corporate design of the ZEISS company.
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Cheng, Raymond W. K., David C. W. Mak, Again Q. J. Wei, Joe J. P. Yan, and Quentin H. Q. Pan. "Integration of BIM and other Innovative Technologies to Enhance the Sustainable Design of Geotechnical Works." In The HKIE Geotechnical Division 43rd Annual Seminar. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.159.23.

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Recent advancements in smart technologies, such as building information modeling (BIM) and digital twin systems, offer promising opportunities to enhance geotechnical practices. The integration of smart technology in geotechnical engineering has provided innovative and sustainable solutions to the challenges faced by engineers, geologists and construction professionals. For example, Dynamo visual programming is used to develop scripts within Civil 3D and Revit software for modeling subsurface conditions and proposed soil nailing works for slope upgrading projects, as well as to facilitate data
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Makkonen, Tomi, Rauno Heikkilä, Pekka Tölli, and Filip Fedorik. "Using SLAM-based Handheld Laser Scanning to Gain Information on Difficult-to-Access Areas for Use in Maintenance Model." In 34th International Symposium on Automation and Robotics in Construction. Tribun EU, s.r.o., Brno, 2017. http://dx.doi.org/10.22260/isarc2017/0124.

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Teppati Losè, Lorenzo, Filiberto Chiabrando, Francesco Novelli, Giacomo Patrucco, and Stefano Perri. "DOCUMENTATION OF A COMPLEX CULTURAL HERITAGE ASSET WITH INTEGRATED GEOMATIC SURVEY: THE MONTANARO BELL TOWER." In ARQUEOLÓGICA 2.0 - 9th International Congress & 3rd GEORES - GEOmatics and pREServation. Editorial Universitat Politécnica de Valéncia, 2021. http://dx.doi.org/10.4995/arqueologica9.2021.12107.

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The research activities presented in this manuscript are focused on the documentation of a valuable built heritage asset: the Santa Marta bell tower (1769-1772), designed by the Italian architect Bernardo Antonio Vittone and located in the municipality of Montanaro (30 km North-East of Turin, Italy). The documentation of this complex palimpsest was designed to meet the requirements of the decay analysis and to provide a reference for the future restoration and valorisation project. To achieve these objectives a multi-scale and multi-sensor survey was designed and carried out exploiting several
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Duma, V. F., D. Demian, C. Sinescu, et al. "Handheld scanning probes for optical coherence tomography: developments, applications, and perspectives." In Sixth International Conference on Lasers in Medicine, edited by Darinca Carmen Todea, Adrian G. Podoleanu, and Virgil-Florin Duma. SPIE, 2016. http://dx.doi.org/10.1117/12.2178590.

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