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2. 发明申请

US20050117019A1 Method for encoding and decoding free viewpoint videos 失效
标题翻译：免费观看视频的编码和解码方法
公开(公告)号：US20050117019A1
公开(公告)日：2005-06-02
申请号：US10723035
申请日：2003-11-26
申请人： Edouard Lamboray , Michael Waschbusch , Stephan Wurmlin , Markus Gross , Hanspeter Pfister
发明人： Edouard Lamboray , Michael Waschbusch , Stephan Wurmlin , Markus Gross , Hanspeter Pfister
IPC分类号： H04N13/00 , H04N5/232 , H04N7/18
CPC分类号： G06T9/001 , G06T9/00 , H04N19/20 , H04N19/597
摘要： A system encodes videos acquired of a moving object in a scene by multiple fixed cameras. Camera calibration data of each camera are first determined. The camera calibration data of each camera are associated with the corresponding video. A segmentation mask for each frame of each video is determined. The segmentation mask identifies only foreground pixels in the frame associated with the object. A shape encoder then encodes the segmentation masks, a position encoder encodes a position of each pixel, and a color encoder encodes a color of each pixel. The encoded data can be combined into a single bitstream and transferred to a decoder. At the decoder, the bitstream is decoded to an output video having an arbitrary user selected viewpoint. A dynamic 3D point model defines a geometry of the moving object. Splat sizes and surface normals used during the rendering can be explicitly determined by the encoder, or explicitly by the decoder.
摘要翻译：系统通过多个固定摄像机对场景中的移动物体所获取的视频进行编码。首先确定每个摄像机的摄像机校准数据。每个摄像机的摄像机校准数据与相应的视频相关联。确定每个视频的每个帧的分割掩码。分割掩码仅识别与对象相关联的帧中的前景像素。然后，形状编码器对分割掩模进行编码，位置编码器对每个像素的位置进行编码，并且颜色编码器对每个像素的颜色进行编码。编码数据可以组合成单个比特流并传送到解码器。在解码器处，比特流被解码为具有任意用户选择的视点的输出视频。动态3D点模型定义了移动物体的几何形状。在渲染期间使用的Splat尺寸和表面法线可以由编码器显式确定，或者由解码器显式确定。

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