66.3: Invited Paper: Smooth Motion Parallax Autostereoscopic 3D Display Using Linear Blending of Viewing Zones

Date, Muneyuki; Kawakami, Toru; Sasai, Mutsumi; Takada, Hideaki

doi:10.1002/sdtp.10300

Cited by 3 publications

(2 citation statements)

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“…Examples we have developed include autostereoscopic optical linear blending 3D displays using projection optics [15,16] and a ball lens [17]. However, the distortion imposed by projection optics seriously degrades images and reduces the effect of linear blending.…”

Section: Velf3d Displaymentioning

confidence: 99%

Depth Range Control in Visually Equivalent Light Field 3D

Date

Shimizu

Kimata

et al. 2021

IEICE Trans. Electron.

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3D video contents depend on the shooting condition, which is camera positioning. Depth range control in the post-processing stage is not easy, but essential as the video from arbitrary camera positions must be generated. If light field information can be obtained, video from any viewpoint can be generated exactly and post-processing is possible. However, a light field has a huge amount of data, and capturing a light field is not easy. To compress data quantity, we proposed the visually equivalent light field (VELF), which uses the characteristics of human vision. Though a number of cameras are needed, VELF can be captured by a camera array. Since camera interpolation is made using linear blending, calculation is so simple that we can construct a ray distribution field of VELF by optical interpolation in the VELF3D display. It produces high image quality due to its high pixel usage efficiency. In this paper, we summarize the relationship between the characteristics of human vision, VELF and VELF3D display. We then propose a method to control the depth range for the observed image on the VELF3D display and discuss the effectiveness and limitations of displaying the processed image on the VELF3D display. Our method can be applied to other 3D displays. Since the calculation is just weighted averaging, it is suitable for real-time applications.

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Section: Velf3d Displaymentioning

confidence: 99%

Depth Range Control in Visually Equivalent Light Field 3D

Date

Shimizu

Kimata

et al. 2021

IEICE Trans. Electron.

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“…We also developed a conceptual demonstration system in which users can communicate through a wall size screen and 3D projection with head tracking. We also applied this effect to an autostereoscopic 3D display . However, the depth range was narrow and not enough to display multiple objects.…”

Section: Introductionmentioning

confidence: 99%

Viewpoint image generation for head tracking 3D display using multi‐camera and approximate depth information

2015

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-A simple and high image quality method for viewpoint image synthesis from multi-camera images for a stereoscopic 3D display using head tracking is proposed. In this method, slices of images for depth layers are made using approximate depth information, the slices are linearly blended corresponding to the distance between the viewpoint and cameras at each layer, and the layers are overlaid from the perspective of viewpoint. Because the linear blending automatically compensates for depth error because of the visual effects of depth-fused 3D (DFD), the resulting image is natural to observer's perception. Smooth motion parallax of wide depth range objects induced by viewpoint movement for left-and-right and front-and-back directions is achieved using multi-camera images and approximate depth information. Because the calculation algorithm is very simple, it is suitable for real time 3D display applications.

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