The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Fumio Okano - One of the best experts on this subject based on the ideXlab platform.
-
Geometric analysis on stereoscopic images captured by single High-Definition Television camera on lunar orbiter Kaguya (SELENE)
Three-Dimensional Imaging Visualization and Display 2010 and Display Technologies and Applications for Defense Security and Avionics IV, 2010Co-Authors: M Miura, Junichi Yamazaki, Jun Arai, Hisayuki Sasaki, Makoto Okui, Shinichi Sobue, Fumio OkanoAbstract:We present a generating method of stereoscopic images from moving pictures captured by a single High-Definition Television camera mounted on the Japanese lunar orbiter Kaguya (Selenological and Engineering Explorer, SELENE). Since objects in the moving pictures look as if they are moving vertically, vertical disparity is caused by the time offset of the sequence. This vertical disparity is converted into horizontal disparity by rotating the images by 90 degrees. We can create stereoscopic images using the rotated images as the images for a left and right eyes. However, this causes spatial distortion resulting from the axi-asymmetrical positions of the corresponding left and right cameras. We reduced this by adding a depth map that was obtained by assuming that the lunar surface was spherical. We confirmed that we could provide more acceptable views of the Moon by using the correction method.
-
Conversion Method From Moving Pictures Captured by High-Definition Television Camera on Kaguya (SELENE) Into Stereoscopic Images
Journal of Display Technology, 2010Co-Authors: M Miura, Jun Arai, J Yamazaki, Hisayuki Sasaki, Makoto Okui, Shinichi Sobue, Fumio OkanoAbstract:We present a method of converting moving pictures captured by a single High-Definition Television camera mounted on the Japanese lunar orbiter Kaguya (Selenological and Engineering Explorer, SELENE) into stereoscopic images. As objects in the moving pictures look as if they are moving vertically, vertical disparity is caused by the time offset of the sequence. The vertical disparity is converted into horizontal disparity by rotating the images by 90 degs. We developed models of the capture and display systems, and geometrically and numerically derived convergence points of observers' eyes. We confirmed that observers could perceive a stereoscopic effect with binocular parallax for the lunar surface at distances of several hundreds of kilometers.
Der-song Lee - One of the best experts on this subject based on the ideXlab platform.
-
Screen Luminance, Subtitle, and Viewing Angle on Viewing Distance of Liquid Crystal Display High-Definition Television
2012 International Conference on Computer Science and Electronics Engineering, 2012Co-Authors: Der-song Lee, Min-liang HuangAbstract:This study explored the effect of screen luminance, subtitle, and viewing angle on preferred viewing distance for liquid crystal display High-Definition Television (LCD-HDTV). The results showed the mean preferred viewing distance was 3246 mm, about 4 times of Television width. Preferred viewing distance increased as the scale of screen luminance went upward from scale 10 to scale 60, then decreased from scale 60 to scale 90. Whether there was subtitle or not did not have significant effect on viewing distance. Moreover, viewing angle was Highly correlated with preferred viewing distance. The more deflected from the direct front view, the shorter the viewing distance was.
-
Characteristics of subtitle on preferred viewing distance and subjective preference of liquid crystal display High-Definition Television
2012 5th International Congress on Image and Signal Processing, 2012Co-Authors: Yun-ying Yeh, Der-song LeeAbstract:This study explored the effects of characteristics of TV program subtitle, including character font, character size, and position of the subtitle on preferred viewing distance and subjective preference for liquid crystal display High-Definition Television (LCD-HDTV). The results showed the mean preferred viewing distance was 3516 mm, about 4.3 times of Television width. Character font had significant effect on PVD; PVD was longer for New Xi-Ming style than Biao Kai style. Character size had significant effect on PVD: the larger the character size, the longer the PVD. Character font had no significant effect on subjective preference. The effect of character size on subjective preference was significant. Subjective preference increased as character size increased from 10 pt, 20 pt to 30 pt, then it decreased when character size was 40 pt. Subtitle position had no significant effect on PVD and subjective preference.
M Miura - One of the best experts on this subject based on the ideXlab platform.
-
Geometric analysis on stereoscopic images captured by single High-Definition Television camera on lunar orbiter Kaguya (SELENE)
Three-Dimensional Imaging Visualization and Display 2010 and Display Technologies and Applications for Defense Security and Avionics IV, 2010Co-Authors: M Miura, Junichi Yamazaki, Jun Arai, Hisayuki Sasaki, Makoto Okui, Shinichi Sobue, Fumio OkanoAbstract:We present a generating method of stereoscopic images from moving pictures captured by a single High-Definition Television camera mounted on the Japanese lunar orbiter Kaguya (Selenological and Engineering Explorer, SELENE). Since objects in the moving pictures look as if they are moving vertically, vertical disparity is caused by the time offset of the sequence. This vertical disparity is converted into horizontal disparity by rotating the images by 90 degrees. We can create stereoscopic images using the rotated images as the images for a left and right eyes. However, this causes spatial distortion resulting from the axi-asymmetrical positions of the corresponding left and right cameras. We reduced this by adding a depth map that was obtained by assuming that the lunar surface was spherical. We confirmed that we could provide more acceptable views of the Moon by using the correction method.
-
Conversion Method From Moving Pictures Captured by High-Definition Television Camera on Kaguya (SELENE) Into Stereoscopic Images
Journal of Display Technology, 2010Co-Authors: M Miura, Jun Arai, J Yamazaki, Hisayuki Sasaki, Makoto Okui, Shinichi Sobue, Fumio OkanoAbstract:We present a method of converting moving pictures captured by a single High-Definition Television camera mounted on the Japanese lunar orbiter Kaguya (Selenological and Engineering Explorer, SELENE) into stereoscopic images. As objects in the moving pictures look as if they are moving vertically, vertical disparity is caused by the time offset of the sequence. The vertical disparity is converted into horizontal disparity by rotating the images by 90 degs. We developed models of the capture and display systems, and geometrically and numerically derived convergence points of observers' eyes. We confirmed that observers could perceive a stereoscopic effect with binocular parallax for the lunar surface at distances of several hundreds of kilometers.
Cheryl Campanella Bracken - One of the best experts on this subject based on the ideXlab platform.
-
Presence and Image Quality: The Case of High-Definition Television
Media Psychology, 2005Co-Authors: Cheryl Campanella BrackenAbstract:Previous research has demonstrated that form variables can increase Television viewers' sense of presence. The current broadcasting of High-Definition Television (HDTV) programming makes testing this relation between form and presence possible in a new context, image quality. In this experiment, Television viewers watched either HDTV or standard-Definition Television images and then rated their viewing experience on a pencil-and-paper questionnaire. The results demonstrate that HDTV provided viewers with a greater sense of presence than the current standard, thus providing empirical evidence for the claim that improved image quality will lead to Television viewers' experiencing presence. Additionally, the results suggest that with the coming of HDTV, sensations of presence will be both stronger and more common.
Peter Holmes - One of the best experts on this subject based on the ideXlab platform.
-
The Rise and Fall of High Definition Television: The Impact of European Technology Policy
JCMS: Journal of Common Market Studies, 1996Co-Authors: Xiudian Dai, Alan Cawson, Peter HolmesAbstract:This article discusses the European attempt to revive the European consumer electronics industry by mobilizing resources in favour of High Definition Television (HDTV) technology. The policy was ultimately doomed, as digital technology and commercial broadcasters' actions undermined its viability and the public authorities, especially the European Commission, continued beyond the point at which failure was unavoidable. Nevertheless, the policy was not inherently unviable from the outset and not all the results and lessons from the programme are entirely negative. The Commission appears to be profiting from some of the lessons in its approach to digital broadcasting, and EU firms' activity in the US is benefiting from the IBA MAC research and development.