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    • 85. 发明申请
    • INTRA COMPRESSION OF SCREEN CONTENT BASED ON SOFT CONTEXT FORMATION
    • 基于软件语境形成的屏幕内容压缩
    • WO2018083183A1
    • 2018-05-11
    • PCT/EP2017/078074
    • 2017-11-02
    • DEUTSCHE TELEKOM AG
    • STRUTZ, Tilo
    • H04N19/13H04N19/593H04N19/94
    • H04N19/13H04N19/593H04N19/94
    • The present invention relates to a method and a system for efficiently compressing images by estimating contextual probability distributions based on virtually all samples processed up to a current position in the image. The method comprises encoding a distribution symbol of the property vector X from a distribution of the property vectors found in the contextual patterns that are identical or similar to the contextual pattern of the respective pixel, when the property vector X of the respective pixel occurred in any of the contextual patterns that are identical or similar to the contextual pattern of the respective pixel; encoding a first stage exception handling symbol and a palette symbol of the respective property vector X of a dynamically generated palette of property vectors, when the respective property vector X of the respective pixel has not occurred in the contextual patterns that are identical or similar to the contextual pattern of the respective pixel; and encoding a first stage exception handling symbol, a second stage exception handling symbol, and a representation of all components of the property vector X, when the property vector X has not occurred in the contextual patterns that are identical or similar to the contextual pattern of the respective pixel and the property vector X is not found in the palette.
    • 本发明涉及一种用于通过基于实际上直到图像中的当前位置处理的所有样本来估计情境概率分布来有效地压缩图像的方法和系统。 该方法包括:当相应像素的属性向量X出现在任何相邻像素的上下文模式中时,根据在上下文模式中找到的与相应像素的上下文模式相同或相似的属性向量的分布来编码属性向量X的分布符号 与相应像素的上下文模式相同或相似的上下文模式; 当相应像素的相应属性矢量X未在与所述相似或相似的情境模式中发生时,编码动态生成的属性矢量调色板的相应属性矢量X的第一阶段异常处理符号和调色板符号 相应像素的上下文模式; 并且当属性矢量X未出现在与上下文模式相同或相似的上下文模式中时编码第一阶段异常处理符号,第二阶段异常处理符号以及属性矢量X的所有组件的表示 在调色板中找不到相应的像素和属性矢量X.