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Hadamard Transform-Based Image Compression Circuit and Method Thereof
Hadamard Transform-Based Image Compression Circuit and Method Thereof
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机译:基于哈达玛变换的图像压缩电路及其方法
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摘要
A Hadamard transform-based image compression method includes performing a Hadamard transform on 2k pixel values according to a product of a 2k×2k stage Hadamard matrix and a 2k×2k adjustment matrix to generate 2k conversion values, where k is a positive integer and at least one of the 2k conversion values is zero. The adjustment matrix satisfies a condition that: when the 2k pixel values are divided into G pixel groups each comprising 2k/G adjacent pixels values and the adjustment matrix is multiplied with a first 2k×1 matrix formed by the 2k pixel values to transform the first 2k×1 matrix to a second 2k×1 matrix, each pixel value of the first matrix is transformed to an average of a pixel group comprising the pixel value to form the second 2k×1 matrix.
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机译:一种基于Hadamard变换的图像压缩方法,包括根据2 k Sup>×2 k Sup>的乘积对2 k Sup>个像素值执行Hadamard变换。阶段Hadamard矩阵和2 k Sup>×2 k Sup>调整矩阵以生成2 k Sup>转换值,其中k为正整数,至少一个2 k Sup>转换值中的零为零。调整矩阵满足以下条件:当将2 k Sup>个像素值划分为G个像素组时,每个像素组包括2 k Sup> / G个相邻像素值,并且将调整矩阵乘以由2 k Sup>个像素值形成的第一个2 k Sup>×1矩阵,将第一个2 k Sup>×1矩阵转换为第二个2 k Sup>×1矩阵,将第一矩阵的每个像素值转换为包含该像素值的像素组的平均值,以形成第二2 k Sup>×1矩阵。
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