It quantizes the low frequency DCT coefficients with fine level and the high frequency DCT coefficients with coarse level, But JPEG does not specifically process the image edges, which are partly hiding in high frequency DCT coefficients.

  • JPEG充分利用人眼的视觉特性,对DCT系数的低频系数进行细量化,而对高频系数进行粗量化,但未对图像的边缘特征进行特殊的处理。

  • 互联网摘选 2025-01-20 19:12:14

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