I have taken a passport photo(3.5cm*4.5cm) having resolution 300 pixels/cm.I have detected the face(as my region of interest) also, based on the skin color detection.Now i want to compress the face using lossless comp. tech &rest using lossy tech.

I have taken a passport photo(3.5cm*4.5cm) having resolution 300 pixels/cm.I have detected the face(as my region of interest) also, based on the skin color detection.Now i want to compress the face using DWT in a lossless way and the remaining portion of the image with a lossy technique.Can anybody help me by providing the code or links for help.

Thanks in advance

Answer 1

[azizullah khan]

x=imread('passportsizeimage');

[cA,cH,cV,cD] = dwt2(uint8(k),'db5');

figure('name','DWT')

imshow(cA,[0 255]),title('shows CA ')