bafrit_demo.m

为stanford大学donoho教授所编写的redgit变换源代码。是用c编写的

x = imread('lena.bmp');
x = double(x) / 256;
[r, m, ind] = bafrit(x, 16, 3, [1,3]);  % block-16 ridgelet transform
imagesc(r);
rc = compress(r, 0.95);  % zero-out 95% of coefficients
xr = ibafrit(rc, m, ind, 3, [1,3]);
SNR(x, xr)
figure; imshow(xr);