Mutsumi Sasai

MulDiRoH: A Multi-View Human Representation System Using a QDA Screen With Multiple Cameras

In this paper, we have developed a human representation system we call “MulDiRoH.” It consists of a multiview display that uses a QDA screen and multiple cameras. The QDA screen has a large, wide viewing area that enables observers to comfortably watch the display. It is also convenient in that accurate projector orientation is unnecessary; this makes easy system construction possible. In this paper, we describe the MulDiRoH system and propose a “Tiled Image Method” to achieve shorter projection distance with it and a “Perspective Transform Method” to correct views obtained with it.

Large High-Definition Multiview Display System Capable of Controlling Observation Area

We developed a large high-definition multiview projection display configured from newly developed double-sided lenticular lens, a Fresnel lens, and multiple projectors. The system projects magnified images of each projectors iris side by side using a Fresnel lens, which minimizes the crosstalk between the images in adjacent areas and creates a broad observation area with highly uniform in-plane brightness. In addition, by using an inclined screen, we developed a method to evaluate the observation area of the multiview display. The characteristics of the proposed multiview display are the easily adjustable projector arrangement and the broad observation area without crosstalk between images in adjacent areas. The proposed multiview display is expected to be useful in future teleconference and digital signed systems.

360-degree screen-free floating 3D image in a crystal ball using a spatially imaged iris and rotational multiview DFD technologies

A rotational multiview depth-fused 3D (DFD) display and 360-deg displaying optics using a spatially imaged iris method are proposed to realize a 360-deg 3D image. This method enables displaying clear floating images in a crystal ball. Its symmetric optics provide clear and natural 360-deg images with smooth motion parallax in horizontal and vertical directions using the directional selectivity of a spatially imaged iris method and natural 3D images of a rotational multiview DFD display.

Luminance profile control method using gradation iris for autostereoscopic 3D displays

A precise control method of angular luminance distribution of viewing zone using a Alter with gradation in transmittance in an iris of a projector is proposed for autostereoscopic 3D display with smooth motion parallax.

Optical Linear Blending of Viewing Zones Using Convolution of Iris for Smooth Motion Parallax Autostereoscopic 3D Display

A new autostereoscopic 3D display is proposed. Using only a small number of projectors and optical linear blending by optical convolution of iris, it produces smooth motion parallax and the same depth regardless of viewing positions and interpupillary distance by applying the visual effects of dual edge perception in a depth-fused 3D (DFD) display. It provides a breakthrough in overcoming the trade-off between 3D image reality and the number of video sources.

MulDiRoH: A multi-view display using a QDA screen with multiple cameras for human representation

We have developed MulDiRoH, a human representation system comprising a multi-view display that uses a QDA screen and multiple cameras. The use of the QDA screen offers the benefit of a large, wide viewing area that enables observers to comfortably watch the display. It also provides convenience in that it is unnecessary to accurately orient the projectors, which facilitates easy system construction.