Category

Development Platform
Home > SourceCode/Document > Compress-Decompress algrithms > View Code
jpeg.asv
Package: JPEG-matlab.rar　[view]
Upload User: mgf822
Upload Date: 2022-06-06
Package Size: 51k
Code Size: 0k
Category:

Compress-Decompress algrithms

Development Platform:

Matlab

jpeg.asv：Code Content
  1. clear all;
  2. x=imread('H:lena.bmp');
  3. figure(1);
  4. subplot(121);
  5. imshow(x);
  6. Y=jpegencode(x,5);
  7. X=jpegdecode(Y);
  8. subplot(122);
  9. imshow(X);
  10. e=double(x)-double(X);
  11. [m,n]=size(e);
  12. erms=sqrt(sum(e(:).^2)/(m*n))
  13. ave=mean(x(:));
  14. x1=x.^2;
  15. cs1=sum(x1(:));
  16. x1=(x-X).^2;
  17. cd1=sum(x1(:));
  18. snr=10*log10(cs1/cd1)
  22. % figure(1);imshow(X);
  23. % 
  24. % localmax=imread('H:max.bmp');
  25. % Last=X+localmax;
  26. % figure(2);imshow(Last);