JPEG 压缩图像以 8x8 区块处理的原因?
原文：Why JPEG compression processes image by 8x8 blocks?
原文：Why JPEG compression processes image by 8x8 blocks?
JPEG 压缩图像时用 8x8 区块处理图像, 而不是对整个图像应用分解的 Cosine 变换?
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