Screen content coding systems and methods

    公开(公告)号:US09756347B2

    公开(公告)日:2017-09-05

    申请号:US14339351

    申请日:2014-07-23

    摘要: Presented systems and methods facilitate screen content coding. A system can comprises: a processing component configured to execute coding operations and a storage component configured to store information for the processing component, including the color table and color index map. The coding operations can include: receiving information associated with a plurality of pixels; creating a color table, the color table includes color values (e.g., of the pixels) and corresponding indices; creating a color index map wherein each index of the color map maps a pixel to an index value of the color table; and performing coding operations corresponding to the color table and color index map. In one exemplary implementation, index values of the color table are encoded/decoded during color table and index map coding rather than the actual raw color values for each pixel. Various types of compression and coding can be implemented (e.g., lossless, lossy, intra-prediction, inter-prediction, etc.).

    ADVANCED SCREEN CONTENT CODING WITH IMPROVED COLOR TABLE AND INDEX MAP CODING METHODS
    3.
    发明申请
    ADVANCED SCREEN CONTENT CODING WITH IMPROVED COLOR TABLE AND INDEX MAP CODING METHODS 审中-公开
    高级屏幕内容编码与改进的颜色表和索引地图编码方法

    公开(公告)号:US20150271505A1

    公开(公告)日:2015-09-24

    申请号:US14664284

    申请日:2015-03-20

    摘要: An apparatus is configured to perform a method for screen content encoding. The method includes deriving a palette table and a color index map based on a coding unit (CU). The method also includes encoding the palette table and encoding the color index map. The method further includes combining the encoded palette table and the encoded color index map for transmission to a receiver, where the palette table and index map are decoded to reconstruct a pixel block.

    摘要翻译: 一种装置被配置为执行屏幕内容编码的方法。 该方法包括基于编码单元(CU)导出调色板表和颜色索引图。 该方法还包括编码调色板表并编码颜色索引图。 该方法还包括将编码的调色板表和编码的颜色索引图组合以便传输到接收器,其中调色板表和索引图被解码以重建像素块。

    ADVANCED SCREEN CONTENT CODING WITH IMPROVED PALETTE TABLE AND INDEX MAP CODING METHODS
    6.
    发明申请
    ADVANCED SCREEN CONTENT CODING WITH IMPROVED PALETTE TABLE AND INDEX MAP CODING METHODS 审中-公开
    高级屏幕内容编码与改进PALETTE表和索引地图编码方法

    公开(公告)号:US20150381994A1

    公开(公告)日:2015-12-31

    申请号:US14749138

    申请日:2015-06-24

    摘要: An apparatus is configured to perform a method for screen content coding. The method includes deriving a color index map based on a current coding unit (CU). The method also includes encoding the color index map, wherein at least a portion of the color index map is encoded using a first coding technique, wherein a first indicator indicates a significant distance of the first coding technique. The method further includes combining the encoded color index map and the first indicator for transmission to a receiver.

    摘要翻译: 一种装置被配置为执行屏幕内容编码的方法。 该方法包括基于当前编码单元(CU)导出颜色索引图。 该方法还包括编码颜色索引图,其中使用第一编码技术对颜色索引图的至少一部分进行编码,其中第一指示符指示第一编码技术的显着距离。 该方法还包括将编码的颜色索引图和第一指示符组合以用于发送到接收器。

    Context Reduction Of Palette Run Type In High Efficiency Video Coding (HEVC) Screen Content Coding (SCC)
    8.
    发明申请
    Context Reduction Of Palette Run Type In High Efficiency Video Coding (HEVC) Screen Content Coding (SCC) 审中-公开
    高效率视频编码(HEVC)屏幕内容编码(SCC)中调色板运行类型的上下文减少

    公开(公告)号:US20170055003A1

    公开(公告)日:2017-02-23

    申请号:US14831408

    申请日:2015-08-20

    IPC分类号: H04N19/90 H04N19/13

    摘要: An encoding apparatus includes a processor configured to receive a video frame including screen content and generate a block containing an index map of colors for screen content in the video frame. The block includes a first string of index values and a second string of the index values immediately below the first string. The processor is also configured to encode a second string palette_run_type flag corresponding to the second string without referencing a first string palette_run_type flag corresponding to the first string and using a single available context. A transmitter operably coupled to the processor is configured to transmit the second string palette_run_type flag in a bitstream to a decoding apparatus.

    摘要翻译: 编码装置包括:处理器,被配置为接收包括屏幕内容的视频帧,并生成包含视频帧中的屏幕内容的颜色的索引图的块。 该块包括第一个索引值串和第一个字符串正下方的索引值的第二个字符串。 处理器还被配置为对与第二字符串相对应的第二字符串palette_run_type标志进行编码,而不引用与第一字符串相对应的第一字符串palette_run_type标志并使用单个可用上下文。 可操作地耦合到处理器的发射机被配置为将比特流中的第二串palette_run_type标志发送到解码装置。

    Advanced Coding Techniques For High Efficiency Video Coding (HEVC) Screen Content Coding (SCC) Extensions
    9.
    发明申请
    Advanced Coding Techniques For High Efficiency Video Coding (HEVC) Screen Content Coding (SCC) Extensions 审中-公开
    高效率视频编码(HEVC)屏幕内容编码(SCC)扩展的高级编码技术

    公开(公告)号:US20160373756A1

    公开(公告)日:2016-12-22

    申请号:US15178316

    申请日:2016-06-09

    摘要: An encoding apparatus, decoding apparatus, and coding methods are provided. A method of decoding including receiving, by a decoder, a bitstream from an encoder, scanning, using the decoder, the bitstream to identify a first flag corresponding to a string of index values in a block other than a last string and a second flag corresponding to the last string of index values from the block, determining, by the decoder, that a context model used to encode the first flag is the same as the context model used to encode the second flag, and generating, by the decoder, a video frame using the context model

    摘要翻译: 提供了编码装置,解码装置和编码方法。 一种解码方法,包括由解码器从编码器接收比特流,使用解码器扫描比特流,以识别与除最后一个字符串以外的块中的索引值串相对应的第一标志和相应的第二标志 对于来自块的索引值的最后一串,由解码器确定用于对第一标记进行编码的上下文模型与用于编码第二标志的上下文模型相同,并且由解码器生成视频 框架使用上下文模型