公开(公告)号：US20160360230A1

公开(公告)日：2016-12-08

申请号：US14730975

申请日：2015-06-04

Applicant: Apple Inc.

Inventor： Peikang Song ,  Jae Hoon Kim ,  Xiaosong Zhou ,  Chris Y. Chung ,  Hsi-Jung Wu ,  Dazhong Zhang

IPC: H04N19/53 ,  H04N19/31 ,  H04N19/137 ,  H04N19/85 ,  H04N19/70 ,  H04N19/117

Abstract: Techniques for coding video data are described that maintain high precision coding for low motion video content. Such techniques include determining whether a source video sequence to be coded has low motion content. When the source video sequence contains low motion content, the video sequence may be coded as a plurality of coded frames using a chain of temporal prediction references among the coded frames. Thus, a single frame in the source video sequence is coded as a plurality of frames. Because the coded frames each represent identical content, the quality of coding should improve across the plurality of frames. Optionally, the disclosed techniques may increase the resolution at which video is coded to improve precision and coding quality.

Abstract translation: 描述了用于对视频数据进行编码的技术，其维持低运动视频内容的高精度编码。 这样的技术包括确定要编码的源视频序列是否具有低运动内容。 当源视频序列包含低运动内容时，视频序列可以使用编码帧中的时间预测参考链来编码为多个编码帧。 因此，源视频序列中的单个帧被编码为多个帧。 由于编码帧各自表示相同的内容，所以编码的质量应该跨越多个帧而改善。 可选地，所公开的技术可以增加视频被编码的分辨率，以提高精度和编码质量。

公开(公告)号：US20140362919A1

公开(公告)日：2014-12-11

申请号：US13913169

申请日：2013-06-07

Applicant: Apple Inc.

Inventor： Xiaosong Zhou ,  Hsi-Jung Wu ,  Chris Y. Chung ,  Albert E. Keinath ,  David R. Conrad ,  Yunfei Zheng ,  Dazhong Zhang ,  Jae Hoon Kim

IPC: H04N19/583

CPC classification number: H04N19/51 ,  H04N19/119 ,  H04N19/136 ,  H04N19/14 ,  H04N19/159 ,  H04N19/172 ,  H04N19/23 ,  H04N19/46

Abstract: The invention is directed to an efficient way for encoding and decoding video. Embodiments include identifying different coding units that share a similar characteristic. The characteristic can be, for example: quantization values, modes, block sizes, color space, motion vectors, depth, facial and non-facial regions, and filter values. An encoder may then group the units together as a coherence group. An encoder may similarly create a table or other data structure of the coding units. An encoder may then extract the commonly repeating characteristic or attribute from the coding units. The encoder may transmit the coherence groups along with the data structure, and other coding units which were not part of a coherence group. The decoder may receive the data, and utilize the shared characteristic by storing locally in cache, for faster repeated decoding, and decode the coherence group together.

Abstract translation: 本发明涉及用于对视频进行编码和解码的有效方式。 实施例包括识别共享相似特征的不同编码单元。 特征可以是例如：量化值，模式，块大小，颜色空间，运动矢量，深度，面部和非面部区域以及滤波器值。 然后，编码器可以将这些单元组合在一起作为一致性组。 编码器可以类似地创建编码单元的表或其他数据结构。 然后，编码器可以从编码单元中提取常见的重复特性或属性。 编码器可以连同数据结构以及不是相干组的一部分的其他编码单元一起发送相干组。 解码器可以接收数据，并通过将本地存储在高速缓存中来利用共享特性，以便更快的重复解码，并将相干组一起解码。