公开(公告)号：US09282330B1

公开(公告)日：2016-03-08

申请号：US14301309

申请日：2014-06-10

Applicant: Google Inc.

Inventor： Gal Chechik ,  Xiaoquan Yi ,  Hrishikesh Aradhye

IPC: H04N7/12 ,  H04N19/23

CPC classification number: G06T9/20 ,  G06F17/30026 ,  G06F21/10 ,  H04N19/115 ,  H04N19/136 ,  H04N19/154

Abstract: Disclosed herein are methods and apparatuses for compressing a video signal. In one embodiment, the method includes storing a function derived from a set of human ratings in a memory, identifying within at least a portion of the video signal at least one content-based feature, inputting the at least one identified content-based feature into the stored function, determining a compression ratio based on the function using a processor and generating a compressed video signal at the determined compression ratio.

Abstract translation: 这里公开了用于压缩视频信号的方法和装置。 在一个实施例中，该方法包括将从一组人类等级导出的功能存储在存储器中，在视频信号的至少一部分内识别至少一个基于内容的特征，将至少一个所识别的基于内容的特征输入到 所存储的功能，基于使用处理器的功能确定压缩比并且以所确定的压缩比产生压缩视频信号。

公开(公告)号：US09049420B1

公开(公告)日：2015-06-02

申请号：US14219877

申请日：2014-03-19

Applicant: Google Inc.

Inventor： Huisheng Wang ,  Xiaoquan Yi

IPC: H04N11/20 ,  H04N19/103 ,  H04N19/154 ,  H04N19/176 ,  H04N19/40

CPC classification number: H04N19/176 ,  H04N19/103 ,  H04N19/12 ,  H04N19/154 ,  H04N19/179 ,  H04N19/40

Abstract: A relative quality score is provided that takes into account properties of an encoded version of a source video. For example, one such quality score calculates a difference of higher and lower quality transcoded versions of the source video, and computes quality metrics for each to evaluate how similar the transcoded versions are to the source video. A relative quality score quantifying the quality improvement of the high-quality version over the low-quality version is computed. The relative quality score is adjusted based on a measurement of the quality of the source video. If the relative quality score for the video indicates a sufficient quality improvement of the high-quality version over the low-quality version, various actions are taken, such as retaining the high-quality version, and making the high-quality version available to users, e.g. via a video viewing user interface.

Abstract translation: 提供相对质量得分，其考虑了源视频的编码版本的属性。 例如，一个这样的质量得分计算源视频的较高和较低质量转码版本的差异，并且计算每个源视频的质量度量以评估代码转换版本与源视频的相似程度。 计算相对质量得分量化高质量版本与低质量版本的质量改进。 基于源视频质量的测量来调整相对质量得分。 如果视频的相对质量得分表明在低质量版本上高质量版本的质量得到充分提高，则采取各种措施，例如保留高质量版本，并将高质量版本提供给用户 ，例如 通过视频观看用户界面。