Search - dct coefficients distribution

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[Special Effects] 2 DL : 0: 实现图像处理中，实现对一幅灰度图像的快速傅立叶变换,并求其变换后的系数（幅度）分布，同时实现对一幅图像做离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换 -Realize image processing, to achieve the fast Fourier transformation of a grayscale image, and determine the distribution of its transform coefficients (amplitude), while achieving a discrete cosine transform of an image do, to select the appropriate threshold value of the DCT coefficients to the DCT inverse transform
Date : 2025-12-20 Size : 166kb User : 茗汀
[Special Effects] DCT-change DL : 0: 1.实现对lena.bmp灰度图像的快速傅立叶变换,并求其变换后的系数（幅度）分布； 2.实现对lena.bmp图像做离散余弦变换,选择适当的DCT系数阈值对其进行DCT反变换；-1 to achieve the fast Fourier transform on lena.bmp grayscale image, and to find the transformed coefficients (amplitude) distribution 2. To achieve lena.bmp images do discrete cosine transform, select the appropriate DCT coefficient threshold to the DCT inverse transform
Date : 2025-12-20 Size : 86kb User : 戴咪嘟