公开(公告)号：US20160234496A1

公开(公告)日：2016-08-11

申请号：US14864527

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Prasanjit Panda ,  Narendranath Malayath ,  Anush Krishna Moorthy ,  Mayank Tiwari

IPC: H04N19/124 ,  H04N19/40 ,  H04N19/44 ,  H04N19/85 ,  H04N19/426

CPC classification number: H04N19/124 ,  H04N19/14 ,  H04N19/172 ,  H04N19/40 ,  H04N19/428 ,  H04N19/44 ,  H04N19/85

Abstract: Techniques are described for performing near visually lossless video recompression. The disclosed techniques generate video frames having relatively small bitrates and relatively small file sizes while retaining approximately a same level of visually perceivable video quality as the originally recorded video frames. In general, recompression of a video frame takes an input video frame and produces a second copy of the video frame that has the same or lower Nitrate. The proposed techniques address the problem of recompressing a video frame with no perceivable loss in visual quality (i.e., visually lossless recompression) compared to the original recording of the video frame. In addition, the disclosed techniques provide one-step recompression of video frames that includes a single decoding and encoding of each video frame.

Abstract translation: 描述了用于执行近视觉无损视频再压缩的技术。 所公开的技术产生具有相对小的比特率和相对小的文件大小的视频帧，同时保持与原始记录的视频帧大致相同的视觉上可感知的视频质量水平。 通常，视频帧的重新压缩采用输入视频帧，并产生具有相同或更低硝酸盐的视频帧的第二副本。 所提出的技术解决了与视频帧的原始记录相比，视频质量（即视觉无损重新压缩）没有可察觉的损失来再压缩视频帧的问题。 此外，所公开的技术提供包括每个视频帧的单个解码和编码的视频帧的一步重新压缩。