clcclose all%host
rgbimage=imread('host.jpg');figure;imshow(rgbimage);title('original color image');[h_LL,h_LH,h_HL,h_HH]=dwt2(rgbimage,'haar');dec2d = [... h_LL, h_LH; ... h_HL, h_HH ... ];figure,imshow(uint8(dec2d));title('DWT2 of original color image');%watermark
rgbimage=imread('watermark.jpg');figure;imshow(rgbimage);title('Watermark image');[w_LL,w_LH,w_HL,w_HH]=dwt2(rgbimage,'haar');dec2d = [... w_LL, w_LH; ... w_HL, w_HH ... ];figure,imshow(uint8(dec2d));title('DWT2 of Watermark image');%watermarked
rgbimage=imread('watermarked.jpg');figure;imshow(rgbimage);title('Watermarked image');[wm_LL,wm_LH,wm_HL,wm_HH]=dwt2(rgbimage,'haar');dec2d = [... wm_LL, wm_LH; ... wm_HL, wm_HH ... ];figure,imshow(uint8(dec2d));title('DWT2 of Watermarked image');%watermarking
newwatermark_LL= (wm_LL-h_LL)/0.30;%extracted watermark image
rgb2=idwt2(newwatermark_LL,w_LH,w_HL,w_HH,'haar');figure;imshow(uint8(rgb2));title('Extracted watermark');imwrite(uint8(rgb2),'EWatermark.jpg');-----------------------------------------------------------------someone sent this watermarking sourece to me
but I don't understand this code~
I wonder these part matlab source~
%host rgbimage=imread('host.jpg');%<-- example I insert image cameraman.tif (my file name)256x256
%watermark rgbimage=imread('watermark.jpg'); %<-- exmaple I insert image rice.tif (my file name)256x256
%watermarked rgbimage=imread('watermarked.jpg'); <-- I don't know what kind of image insert?
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