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33.16
Displaying 1-20 of 20 articles from this issue
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Article type: Cover
Pages Cover1-
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (14K) -
Article type: Index
Pages Toc1-
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
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Article type: Bibliography
Pages Misc1-
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
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Makoto OGUMA, Masashi TSUBOI, Tsutomu HORIKOSHI, Yasuhiro TAKAKIArticle type: Article
Session ID: 3DIT2009-2/HI2009-53
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThe high-density directional display, which was originally developed to attain a natural 3D display, can control the horizontal ray directions precisely so that it can reproduce object appearances such as glare, transparency, and softness. In this study, the 72-directional VGA display was used to study the effects of moving 3D images on the reproduction of the object appearances by subjective evaluation. The results showed that moving images improve the appearance reproduction and the presence of object. It also showed that moving images improve the appearance reproduction and presence of object in the 2D display, but it cannot provide higher appearances and presences than the high-density directional display does.View full abstractDownload PDF (741K) -
Masashi TSUBOI, Shinji Kimura, Tsutomu HorikoshiArticle type: Article
Session ID: 3DIT2009-3/HI2009-54
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA subjective test to compare the recognized resolution of 2D and 3D image. As the result, the observer perceives the presented high-density directional (HDD) 3D images as having higher resolution than the original resolution of each directional image. This effect occurs even when the image is observed by just a single eye. This effect is considered to be special effect to spatial image reconstruction method, such as HDD 3D display, that can achieve a smooth motion parallax. Consequently, this suggests the possibility of the effects other than other multi-view type 3D imaging methods.View full abstractDownload PDF (688K) -
Goro HAMAGISHIArticle type: Article
Session ID: 3DIT2009-4/HI2009-55
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESS3D displays are electronic display devices that take advantage of human stereoscopic vision to allow 3D perception of displayed objects. Consequently, it is necessary to consider the function of human eyesight, especially those functions relative to 3D perception, during the development of such displays. The approach concerning the standardization of 3D display's metrology based on Ergonomics is promoted in ISO. This activity is done by Finland and a Japan mainly.View full abstractDownload PDF (701K) -
Kazuki TAIRAArticle type: Article
Session ID: 3DIT2009-5/HI2009-56
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSOutlines of the classification and the variation of autostereoscopic displays, the basic concept of the qualified viewing space (QVS) especially for autostereoscopic viewing, and the required optical measurement items in order to qualify such a warranted viewing space are described. As the Japanese mirror committee for ISO TC 159/SC 4/WG 2, we have studied and discussed these issues with a view to establishing a technical report.View full abstractDownload PDF (998K) -
Shin-ichi UEHARAArticle type: Article
Session ID: 3DIT2009-6/HI2009-57
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSFor standardization of 3D displays based on ergonomics, we propose methodology of optical measurement for autostereoscopic displays. In order to obtain viewing spaces as the requirements of standardization, luminance distributions and chromaticity distributions should be measured. By applying human factors to these results, the requirements can be established.View full abstractDownload PDF (855K) -
Akimasa YuukiArticle type: Article
Session ID: 3DIT2009-7/HI2009-58
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe discuss QBVS (Qualified Binocular Viewing Space) from where users can watch images without visual fatigue caused by stereoscopic displays and QSVS (Qualified Stereoscopic Viewing Space) from where users can watch qualified 3D image and their measurement methods in case of two-view autostereoscopic displays. By subjective experiment, it is confirmed that ghost images due to 3D crosstalk and Interocular Luminance Difference are important factors which determine those boundaries of QBVS and Q3DVS..View full abstractDownload PDF (1397K) -
Takafumi KOIKEArticle type: Article
Session ID: 3DIT2009-8/HI2009-59
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThere is no explicit difference between multi-view and integral photography autostereoscopic displays. We present differences between multi-view and integral photography displays based on sampling in ray space. For analyzing differences, we introduce a ray sampling quality function, which calculates the sampling quality of each autostereoscopic display.View full abstractDownload PDF (759K) -
Yasuhiro Takaki, Yuki Hayashi, Yumi TanemotoArticle type: Article
Session ID: 3DIT2009-9/HI2009-60
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSWe have already developed a holographic display with a wide viewing zone angle using a resolution redistribution optical system. In the present study, in order to increase the hologram screen size, we propose a hologram display module employing the resolution redistribution optical system. The resolution redistribution optical system is modified to achieve a frameless display screen by making the display screen be the largest cross section of the optical system. The modules are aligned two-dimensionally to increase the hologram display screen size.View full abstractDownload PDF (628K) -
Takafumi KOIKE, Kazuaki YAMAMOTO, Takeshi NAEMURAArticle type: Article
Session ID: 3DIT2009-10/HI2009-6
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSPLZT is a kind of electro-optical element and piezo-electric element. The refraction index of PLZT varies directly with the square of applied voltage by Kerr effect. We propose a PLZT lens by using this effect, and developed the PLZT lens towards the future 3D displays using time division system.View full abstractDownload PDF (1441K) -
Nichiyo Nago, Tsubasa Kanebako, Yasuhiro TakakiArticle type: Article
Session ID: 3DIT2009-11/HI2009-6
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSThere are flat-panel type and projection type displays which are used to construct a natural three-dimensional display. The number of displayed images should be increased in order to obtain natural three-dimensional images. The resolution of a flat-panel display should be increased for the flat-panel type, and the number of projectors should be increased for the projection type. In the present study, the two types are combined to construct a hybrid type display in order to increase the number of displayed images.View full abstractDownload PDF (614K) -
Kenji KINOSHITAArticle type: Article
Session ID: 3DIT2009-12/HI2009-6
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSA computer simulation method of color image reconstruction from Fresnel computer-generated holograms (Fresnel CGHs) was studied. The size of the CGH is 2048×2048 points and that of an object color image is 128×128 pixels. The interference fringes of the Fresnel CGH for primary color images are calculated by using only a wavelength of red light, and recorded as the sum of the Fresnel zone plate. Images from the three GCHs are reconstructed by applying the two-dimensional fast Fourier transform (2D FFT) to the Frsnel-Kirchhof diffraction integral, using wavelengths of red, green and blue light. To synthesize reconstructed primary color images as one color image, we must pay attention to the sampling interval of the interference fringes in the 2D FFT calculation.View full abstractDownload PDF (650K) -
Masako OMORI, Satoshi HASEGAWA, Tomoyuki WATANABE, Hiroki TAKADA, Masa ...Article type: Article
Session ID: 3DIT2009-13/HI2009-6
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSStereoscopic head mounted display (HMD) are now widely spread for ubiquitous virtual reality in the world. But visual functions for stereoscopic HMDs have not studied much yet. Especially, lens accommodation for stereoscopic HMDs have not measured yet, because the eye balls are very close to the HMDs. To investigate the effects of stereoscopic images on human vision, we measured lens accommodation in subjects as they watched 3-dimensional (3D) images on a head mounted display (HMD). Lens accommodation was measured for 40sec as subjects gazed at 3D images on HMDs. In this report we give the results of measurements of lens accommodation when subjects gazed at Power 3D^<TM>, Cross3D^<TM>, and Pseudo 3D with natural binocular vision. We carried out the experiments on lens accommodation to the stereoscopic vision on HMDs. Actual accommodation for stereoscopic view on HMDs were confirmed. Stereoscopic since HMDs should be promising device for ubiquitous virtual reality, further research including 3D image sickness would be expected.View full abstractDownload PDF (889K) -
Kazuhiro FUJIKAKE, Masaru MIYAO, Hiroshi TAHARA, Masako OMORI, Satoshi ...Article type: Article
Session ID: 3DIT2009-14/HI2009-6
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSMotion sickness caused by watching 3D movies has been measured by psychological and physiological methods. The simulator sickness questionnaire (SSQ) is a well-known former method that is herein used for verifying the occurrence of visually induced motion sickness. We also measure the head acceleration and the sway of the center of gravity of the human body before and during exposure to a 3D movie on head-mounted display (HMD) while subjects are instructed to remain in the Romberg posture for the first 60s and maintain a wide stance (heels midlines 20cm apart) for the next 60s. While there are several minimal points of the temporally averaged potential function involved in the mathematical model of the sway, the wide stance reduces the gradient of the potential function.View full abstractDownload PDF (648K) -
Mitsuru ISHIIArticle type: Article
Session ID: 3DIT2009-15/HI2009-6
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSIn musical programs on TV, directors plan their images, which shoot singers, using impressive camerawork and switching. In the camerawork of musical programs, frequent show of close up shots of the singer and changes with impressive camerawork are expected from the audience. Therefore, it is in the tendency for which it is easy to be in the redundancy. On the other hand, peculiar features of the video expression are observed in Japan. It is based on the characteristic of the partial popular songs of Japan. We considered by the case study, which based on the analysis of the lyrics.View full abstractDownload PDF (607K) -
Article type: Appendix
Pages App1-
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (83K) -
Article type: Appendix
Pages App2-
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (83K) -
Article type: Appendix
Pages App3-
Published: March 17, 2009
Released on J-STAGE: September 20, 2017
CONFERENCE PROCEEDINGS FREE ACCESSDownload PDF (83K)
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