Method and apparatus for video compression
    2.
    发明申请
    Method and apparatus for video compression 有权
    视频压缩的方法和装置

    公开(公告)号:US20040233993A1

    公开(公告)日:2004-11-25

    申请号:US10844054

    申请日:2004-05-12

    CPC classification number: H04N19/85 H04N19/186 H04N19/593 H04N19/60

    Abstract: A unified solution to coding/decoding of different video formats such as 4:2:0, 4:2:2 and 4:4:4 is provided. A method of video coding includes transforming a first mnulln macro block of residual chrominance pixel values of moving pictures by a first integer-transform function generating a corresponding second mnulln macro block of integer-transform coefficients, further transforming DC values of the integer-transform coefficients by a second integer-transform function to generate a third block of integer-transformed DC coefficients. The method further includes generating the second mnulln macro block of integer-transform coefficients by utilizing a knullk integer-transform function on each knullk sub-block of the first mnulln macro block, wherein n and m are each a multiple of k, and generating the third block of coefficients by utilizing a second inullj integer-transform function on the DC values resulting in a (m/k)null(n/k) third block of integer-transformed DC coefficients.

    Abstract translation: 提供了对4:2:0,4:2:2和4:4:4等不同视频格式进行编码/解码的统一解决方案。 一种视频编码方法包括:通过产生对应的整数变换系数的第二m×m宏块的第一整数变换函数来变换运动图像的残余色度像素值的第一m×m宏块,进一步变换整数变换系数的DC值 通过第二整数变换函数来生成整数变换DC系数的第三块。 该方法还包括通过在第一m×n宏块的每个kxk子块上利用kxk整数变换函数来生成整数变换系数的第二m×n宏块,其中n和m分别为k的倍数,并且生成 通过利用第二个ixj整数变换函数,得到第二个整数变换的直流系数的第(m / k)×(n / k)个第三块的DC值的第三个系数块。

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