The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform
Koichi Hashimoto - One of the best experts on this subject based on the ideXlab platform.
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Animated Stickies: Fast Video Projection Mapping onto a Markerless Plane through a Direct Closed-Loop Alignment
IEEE Transactions on Visualization and Computer Graphics, 2019Co-Authors: Shingo Kagami, Koichi HashimotoAbstract:This paper presents a fast projection mapping method for moving Image content Projected onto a markerless planar surface using a low-latency Digital Micromirror Device (DMD) projector. By adopting a closed-loop alignment approach, in which not only the surface texture but also the Projected Image is tracked by a camera, the proposed method is free from a calibration or position adjustment between the camera and projector. We designed fiducial patterns to be inserted into a fast flapping sequence of binary frames of the DMD projector, which allows the simultaneous tracking of the surface texture and a fiducial geometry separate from a single Image captured by the camera. The proposed method implemented on a CPU runs at 400 fps and enables arbitrary video contents to be “stuck” onto a variety of textured surfaces.
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sticky projection mapping 450 fps tracking projection onto a moving planar surface
International Conference on Computer Graphics and Interactive Techniques, 2015Co-Authors: Shingo Kagami, Koichi HashimotoAbstract:We present a fast tracking projection system with an uncalibrated high-speed camera-projector pair. To enable fast projection, we have developed a homography-warping hardware embedded in a projector. The camera-projector pair runs at 450 fps and offers quick adaptation of a Projected Image to a planar surface.
Karin Åström - One of the best experts on this subject based on the ideXlab platform.
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CVPR (2) - Critical configurations for n-view projective reconstruction
Proceedings of the 2001 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. CVPR 2001, 2001Co-Authors: F. Kahl, R. Hartley, Karin ÅströmAbstract:In this paper we give a characterization of critical configurations for projective reconstruction with any number of points and views. A set of cameras and points is said to be critical if the Projected Image points are insufficient to determine the placement of the points and the cameras uniquely, up to a projective transformation. For two views, the critical configurations are well-known. In this paper it is shown that a configuration of n 3 cameras and in points all lying on the intersection of two distinct ruled quadrics is critical. In distinction to the two-view case, which in general allows two alternative solutions, there is a family of ambiguous reconstructions for the n-view case. As a partial converse, it Is shown that for any critical configuration, all the points lie on the intersection of two ruled quadrics.
Patricia Picazo - One of the best experts on this subject based on the ideXlab platform.
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Analysis of the Projected Image of tourism accommodations: a methodological proposal
International Journal of Contemporary Hospitality Management, 2019Co-Authors: Patricia Picazo, Sergio Moreno-gil, Dogan GursoyAbstract:Examination of the Image Projected through photographs used in marketing materials can enable managers to identify opportunities for creating differentiated positioning in the marketplace. However, the impact of Image Projected through photographs has not received much attention in academic literature. This paper aims to establish a methodology using dynamic indices that allow a systematic comparative evaluation of the Image Projected through photographs used in marketing materials of lodging properties located in competing destinations. It also provides an empirical examination of the type of Image Projected through photographs of lodging properties in those destinations.,Analysis was conducted using a content analysis methodology. A total of 17,187 photographs of 5,820 lodging properties located in 15 different tourism destinations over a period of eight years were examined.,Results revealed that the proposed methodology based on dynamic comparative indices is appropriate for determining the Projected Image of lodging properties. The dynamic indices, which categorise photographs in three main categories: subject (people), activities (actions carried out) and contextualisation (location), allowed a systematic evaluation of the Image Projected of lodging properties in competing destinations. Results of the empirical analysis indicated important differences in the Image Projected through photographs among lodging properties located in 15 destinations.,This study provides the industry and destination marketing organisations (DMOs) with a useful and simple tool for comparatively evaluating the Image Projected by tourism accommodations. The methodology proposed enables managers to identify the current Image and the changes in the Image of their lodging properties, their destinations and those of their main competitors over the years, thus providing opportunities for development of more effective differentiation and positioning strategies in their respective target markets.,The proposed tool provides a methodology that can be used to categorise and evaluate the Image represented on the photographs used in marketing materials to ensure the projection of the intended Image. Furthermore, the proposed methodological tool enables managers to monitor the Image Projected through photographs used in competitors’ marketing materials and identify changes in their Image Projected over time.
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analysis of the Projected Image of tourism destinations on photographs a literature review to prepare for the future
Journal of Vacation Marketing, 2019Co-Authors: Patricia Picazo, Sergio MorenogilAbstract:Making the right impression is paramount to succeed in today’s very competitive market, where photographs have acquired a prominent role in doing so. The evaluation and analysis of destination imag...
Lewis T.o. Cheung - One of the best experts on this subject based on the ideXlab platform.
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Measuring the Gaps in the Projected Image and Perceived Image of Rural Tourism Destinations in China’s Yangtze River Delta
Sustainability, 2020Co-Authors: Xialei Duan, Lawal M. Marafa, Chung-shing Chan, Lewis T.o. CheungAbstract:Destination Marketing Organizations (DMOs) at all levels have an ultimate goal of building strong and positive Images for their destinations. However, the Projected Image from the supply side is not necessarily the mirror of the perceived Image from the demand side. This study adopted the content analysis method to evaluate the Projected Image and perceived Image of rural destinations in China to see whether there is any discrepancy between and within the two categories. Comparative analysis of different information sources including web contents and on-site visitor interviews were processed. The evaluation of Image congruency demonstrates that official websites focus more on cognitive Image elements (knowledge and beliefs of the place). Besides promoting attractions, it provides information on geography background and promotes local culture. Business web content promotes attractions, package tour, and activities which can generate revenue. The perceived Image includes more sentiment contents: on-site visitors expressed more negative attitude, but social media comments are relatively positive.
Shingo Kagami - One of the best experts on this subject based on the ideXlab platform.
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Animated Stickies: Fast Video Projection Mapping onto a Markerless Plane through a Direct Closed-Loop Alignment
IEEE Transactions on Visualization and Computer Graphics, 2019Co-Authors: Shingo Kagami, Koichi HashimotoAbstract:This paper presents a fast projection mapping method for moving Image content Projected onto a markerless planar surface using a low-latency Digital Micromirror Device (DMD) projector. By adopting a closed-loop alignment approach, in which not only the surface texture but also the Projected Image is tracked by a camera, the proposed method is free from a calibration or position adjustment between the camera and projector. We designed fiducial patterns to be inserted into a fast flapping sequence of binary frames of the DMD projector, which allows the simultaneous tracking of the surface texture and a fiducial geometry separate from a single Image captured by the camera. The proposed method implemented on a CPU runs at 400 fps and enables arbitrary video contents to be “stuck” onto a variety of textured surfaces.
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sticky projection mapping 450 fps tracking projection onto a moving planar surface
International Conference on Computer Graphics and Interactive Techniques, 2015Co-Authors: Shingo Kagami, Koichi HashimotoAbstract:We present a fast tracking projection system with an uncalibrated high-speed camera-projector pair. To enable fast projection, we have developed a homography-warping hardware embedded in a projector. The camera-projector pair runs at 450 fps and offers quick adaptation of a Projected Image to a planar surface.
