Coarse Integral Volumetric Imaging with Flat Screen and Wide Viewing Angle
Coarse Integral Volumetric Imaging with Flat Screen and Wide Viewing Angle
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平面屏幕和宽视角的粗积分体积成像
DOI：
10.1117/1.jei.21.1.011004
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发表时间：
2012
影响因子：
1.1
通讯作者：
H
中科院分区：
文献类型：
--
作者：
Sawada;S. and Kakeya;H
粗积分体积成像(CIVI)结合了多视角和体积显示解决方案，通过校正每个视角的体积图像的失真来呈现无失真的浮动3D图像。在传统的有限视角的CIVI中，像面的失真可以近似为深度方向的抛物线，而水平和垂直方向的失真可以忽略不计。然而，当视角变大时，这种近似不能实现无失真图像的呈现。为了应对这种强烈的失真，作者提出的方法详细地计算了生成的实像的坐标，并将每个像素描绘在相应深度的显示面板上。此外，水平和垂直方向的扭曲也可以通过使用纹理贴图进行校正。为了实现垂直、水平和深度方向的精确校正，利用光学模拟器计算了显示面板和每个视点之间的光线光路。基于光学模拟的结果，还可以通过分别映射红色、绿色和蓝色纹理来校正颜色像差。
Coarse integral volumetric imaging (CIVI) combines multiview and volumetric display solutions and presents undistorted floating 3D images by correcting distortion of volumetric image for each view. In the conventional CIVI with limited viewing angle, distortions of image planes can be approximated to be parabolic in the direction of depth, while those in horizontal and vertical directions can be ignored. When the viewing angle becomes wider, however, this approximation cannot realize presentation of the undistorted image. To cope with the strong distortions, the method that the authors propose calculates the-coordinate of the generated real image in detail and depicts each pixel on the display panel of the corresponding depth. Also distortions in horizontal and vertical directions are corrected by using texture mapping. To attain precise correction in vertical, horizontal and depth directions, optical paths of light rays between the display panel and each viewpoint are calculated with an optical simulator. Color aberration can also be corrected by mapping red, green and blue textures separately based on the result of the optical simulation.