专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20140348235A1 VIDEO ENCODING APPARATUS AND VIDEO DECODING APPARATUS 有权
标题翻译：视频编码设备和视频解码设备
公开(公告)号：US20140348235A1
公开(公告)日：2014-11-27
申请号：US14455549
申请日：2014-08-08
申请人： SHARP KABUSHIKI KAISHA
发明人： Tomoyuki YAMAMOTO , Tomohiro IKAI
IPC分类号： H04N19/50 , H04N19/44 , H04N19/61 , H04N19/136
CPC分类号： H04N19/513 , H04N19/122 , H04N19/134 , H04N19/176 , H04N19/182 , H04N19/463 , H04N19/91 , H04N19/96
摘要： While maintaining a high degree of freedom in choosing partition sizes and transformation sizes adapted for local characteristics of videos, the amount of metadata is decreased. A video encoding apparatus (10) divides an input video into blocks of a prescribed size and encodes the video block by block. The video encoding apparatus is provided with: a prediction parameter determining portion (102) that decides the block partition structure; a predictive image producing portion (103) that generates predictive images, partition by partition, as prescribed by the partition structure; a transform coefficient producing portion (107) which applies one of the frequency transformations included in a prescribed transformation preset to prediction residuals, i.e. the differences between predictive images and the input video; a transform restriction deriving portion (104) which generates the list of transform candidate, i.e. lists of frequency transformations that can be applied to each partition, on the basis of partition format information; and a variable-length-encoding portion (108) which, on the basis of the list of transform candidate and the transformation preset, performs variable-length encoding on transformation selection flags.
摘要翻译：在选择适应视频的本地特征的分区大小和转换大小的同时，保持高度的自由度，减少元数据量。视频编码装置（10）将输入视频划分成规定尺寸的块，并且对块视频块进行编码。视频编码装置具有：决定块分割结构的预测参数决定部（102）预测图像生成部（103），按照由分割结构规定的分割生成预测图像; 变换系数产生部分（107），其将预定的规定变换中包括的频率变换之一应用于预测残差即预测图像与输入视频之间的差异; 变换限制导出部分（104），其基于分区格式信息生成变换候选列表，即可应用于每个分区的频率变换列表; 以及可变长度编码部分（108），其基于变换候选列表和变换预设，对变换选择标志执行可变长度编码。

IPRDB

热门服务

关于我们

友情链接

联系方式