Immersive imaging method and apparatus
    1.
    发明授权
    Immersive imaging method and apparatus 失效
    沉浸式成像方法和装置

    公开(公告)号:US6141034A

    公开(公告)日:2000-10-31

    申请号:US572785

    申请日:1995-12-15

    申请人: David McCutchen

    发明人: David McCutchen

    摘要: Improvements in the production means for dodecahedral imaging are described, to define a simple, flexible and efficient strategy for the creation of extremely wide images. Improvements in production technology include lenses and optical mounts that enable automatic alignment of film and video cameras and other imaging devices to cover multiple fields of view equal to one, two or three dodecahedral pentagons. Three double-pentagon formats, X, P and O, are described in detail, the X format producing an even hemispherical division and a full spherical view, and the P format producing simplified coverage of most of a sphere and ease of use for stereoscopic effects, and the O based on the combination of the dodecahedron and the octahedron. A triple-pentagon T format based on the use of the tetrahedron is also described, along with crisscross optics and temporal offset mounts to minimize parallax differences between the separate camera views. Standard cropping mattes for dodecahedral images are given, and compressed storage methods are suggested for a more efficient distribution of dodecahedral images in a variety of media.

    摘要翻译: 描述了用于十二面体成像的生产手段的改进,以定义用于创建极宽图像的简单,灵活和有效的策略。 生产技术的改进包括透镜和光学座架,能够自动对准胶片和摄像机以及其它成像装置,以覆盖等于一个,两个或三个十二面体五边形的多个视场。 详细描述三种双五边形格式X,P和O,X格式产生均匀的半球形分割和全球面视图,并且P格式产生了大部分球体的简化覆盖和用于立体效果的易用性 ,和基于十二面体和八面体的组合的O。 还描述了基于四面体的使用的三重五边形T格式,以及十字交叉光学和时间偏移安装,以最小化分离的相机视图之间的视差差异。 给出了十二面体图像的标准裁剪遮罩,并提出了压缩存储方法,用于在各种介质中更有效地分布十二面体图像。

    Rate control for stereoscopic digital video encoding
    3.
    发明授权
    Rate control for stereoscopic digital video encoding 失效
    立体数字视频编码的速率控制

    公开(公告)号:US6072831A

    公开(公告)日:2000-06-06

    申请号:US893131

    申请日:1997-07-15

    申请人: Xuemin Chen

    发明人: Xuemin Chen

    摘要: Rate control in a stereoscopic digital video communication system is accomplished by modifying the quantization level of P or B-frame data in the enhancement layer depending on whether the frame is temporally predicted (from the same layer) or disparity predicted (from the opposite layer). The invention can maintain a consistent image quality by providing additional quantization bits for disparity-predicted P-pictures, for example, where a P-frame may be encoded from a B-frame in the enhancement layer. The selected quantization level corresponds to an overall bit rate requirement of the enhancement layer. For disparity predicted P-frames, the quantization step size is modified according to the activity level of the frame being encoded in the enhancement layer, or of the reference frame, whichever is greater. Also, image quality is improved and frame freeze up is prevented during editing modes such as fast forward and fast rewind which require random access to the picture data. When the reference frame in the base layer is the first frame of a group of pictures (GOP), the corresponding enhancement layer frame will be encoded as an I or P frame instead of as a B frame to improve image quality and eliminate or reduce error propagation during random access.

    摘要翻译: 立体数字视频通信系统中的速率控制是通过根据该时间预测帧(来自相同层)或预测的视差(来自相对层)来修改增强层中的P帧或B帧数据的量化级来实现的, 。 本发明可以通过为差异预测的P图像提供附加量化比特来保持一致的图像质量,例如,其中可以从增强层中的B帧对P帧进行编码。 选择的量化级别对应于增强层的总比特率要求。 对于视差预测的P帧,量化步长根据在增强层或参考帧中编码的帧的活动级别(以较大者为准)进行修改。 此外,图像质量得到改善,并且在诸如需要随机访问图像数据的快进和快退等编辑模式期间防止帧冻结。 当基本层中的参考帧是一组图像(GOP)的第一帧时,相应的增强层帧将被编码为I帧或P帧而不是B帧,以提高图像质量并消除或减少误差 随机访问期间的传播。

    Computer program for a three-dimensional volumetric display
    8.
    发明授权
    Computer program for a three-dimensional volumetric display 失效
    用于三维体积显示的计算机程序

    公开(公告)号:US5945966A

    公开(公告)日:1999-08-31

    申请号:US726305

    申请日:1996-10-02

    摘要: A method for transforming world coordinates into device coordinates comprises the steps of inputting a set of world coordinates to be displayed, scaling the world coordinates into view coordinates bounded by a display volume, finding a control memory location of a light beam deflector corresponding to a Y-axis position for each of the view coordinates, calculating X-axis and Z-axis device coordinates from the view coordinates for deflecting a light beam to a selected point within the display volume corresponding to each of the view coordinates, and loading the device coordinates into the control memory locations corresponding to the Y-axis position for each of the view coordinates to cause the light beam to be deflected to each selected point.

    摘要翻译: 用于将世界坐标变换为设备坐标的方法包括以下步骤:输入要显示的一组世界坐标,将世界坐标缩放为由显示体积界定的视图坐标,找到对应于Y的光束偏转器的控制存储器位置 对于每个视图坐标的轴位置,从用于将光束偏转到与每个视图坐标相对应的显示体积内的选定点的视点坐标计算X轴和Z轴设备坐标,并且加载设备坐标 进入对应于每个视点坐标的Y轴位置的控制存储器位置,以使光束偏转到每个选择的点。

    Autostereoscopic video device and system
    9.
    发明授权
    Autostereoscopic video device and system 有权
    自动立体视频设备和系统

    公开(公告)号:US5936607A

    公开(公告)日:1999-08-10

    申请号:US133280

    申请日:1998-08-12

    申请人: Pierre Allio

    发明人: Pierre Allio

    摘要: The invention relates to a device for display an autostereoscopic image on a video screen (20) having a cylindrical lens array (10) disposed in front of it.The video screen (20) has pixels made up of p color points (RGB) placed horizontally side by side, the number of viewpoints for the autostereoscopic image is different from p.times.n (where n is a non-zero integer), and the lens.sub.-- array (10) has a pitch equal to the product of the pitch of the color points (R, G, B) multiplied by the number of viewpoints, e.g. four.

    摘要翻译: 本发明涉及一种用于在具有设置在其前面的柱面透镜阵列(10)的视频屏幕(20)上显示自动立体图像的装置。 视频屏幕(20)具有由水平并排放置的p个颜色点(RGB)构成的像素,用于自动立体图像的视点数目不同于pxn(其中n是非零整数) 阵列(10)具有等于色点(R,G,B)的间距乘以视点数的乘积的间距,例如 四。