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发明公开
CN106534870A 一种基于RGB源视频的率失真优化编码方法 有权

一种基于RGB源视频的率失真优化编码方法
摘要：
本发明公开了一种基于RGB源视频的率失真优化编码方法，其特征在于，包括如下步骤：步骤1、输入RGB源视频；步骤2、将RGB源视频转换为YUV视频；步骤3、对转换得到的YUV视频进行预测编码；步骤4、进行率失真优化：在预测编码过程中，针对各编码模式计算编码比特数，且将该编码模式下解码后的重构视频转换成RGB空间的重构视频，并计算RGB重构视频与RGB源视频之间的失真；步骤5、根据步骤4计算的编码比特数和RGB失真，计算各编码模式对应的率失真代价；步骤6、选择率失真代价最小的编码模式进行编码。提高RGB视频的编码效率和编码质量，提高用户显示体验。
摘要（英）：

The invention discloses a rate-distortion optimization coding method based on a RGB source video. The method is characterized in comprising the steps of S1, inputting the RGB source video; S2, converting the RGB source video into a YUV video; S3, carrying out predictive coding on the YUV video obtained through conversion; S4, carrying out rate-distortion optimization: in the predictive coding process, for each coding mode, calculating the coding bit number, converting a decoded reconstruction video in the coding mode into the reconstruction video in an RGB space, and calculating distortion between the RGB reconstruction video and the RGB source video; S5, calculating the rate-distortion cost corresponding to each coding mode according to the coding bit number and the RGB distortion calculated in the S4; and S6, selecting the coding mode with the lowest rate-distortion cost for coding. The coding efficiency and coding quality of the RGB video are improved, and the display experience of a user is improved.

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