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main44rgb.m
资源名称：MPEG-2(MATLAB).rar　[点击查看]
上传用户：cxsjwj
上传日期：2022-08-09
资源大小：34k
文件大小：4k
源码类别：

matlab例程

开发平台：

Matlab

main44rgb.m：源码内容
  2. close all
  3. clc
  4. tic
  6. gray
  7. prinf(resize,long,wide)
  8. startframe
  9. endframe
  11. aviobj = avifile('2.avi','fps',25,'COMPRESSION','None');
  12. %motion Vectors
  13. motionVect=zeros(2,256);
  14. fid=fopen('Qtable2.txt','r');
  15. %array is quantization matrix
  16. array=fscanf(fid,'%e',[8,inf]);
  17. %array=2*array;
  20. i = 0;
  21. %flag to tell if B frame was predicted from I or P frame flag=1 P frame
  22. %flag=0 I frame
  23. flag=2;
  24. %GOP is of 10 pictures IBBPBBPBBI
  25. mov=aviread('news.avi');
  26. movinfo=aviinfo('news.avi');
  27. noframe=movinfo.NumFrames;
  28. %mbSize macroblock size used for motion estimation
  29. mbSize = 8;
  30. %p for search area
  31. p = 7;
  34. global I1 I1d P4d P7d I10d B2d B3d B5d B6d B8d B9d 
  35. array=array;
  37. for i=startframe:10:endframe
  38.     i
  39.     framedata=aviread('news.avi',i);
  40.     I1=frame2im(framedata);
  41.     
  42.     if resize==1
  43.     I1=imresize(I1,[long,wide]);
  44.     end
  45.     
  46.     
  47.     I1=I1(:,:,1);
  48.     main441
  49.     layer1
  50.     
  51.     framedata=aviread('news.avi',i);
  52.     I1=frame2im(framedata);
  53.     if resize==1
  54.     I1=imresize(I1,[long,wide]);
  55.     end
  56.     
  57.     I1=I1(:,:,2);
  58.     main442
  59.     layer2
  60.     
  61.     framedata=aviread('news.avi',i);
  62.     I1=frame2im(framedata);
  63.     if resize==1
  64.     I1=imresize(I1,[long,wide]);
  65.     end
  66.     
  67.     I1=I1(:,:,3);
  68.     main443
  69.     layer3
  71. % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  75.         
  76.     
  78.         if i==1
  79.                 imshow(uint8(I1d1))
  80.                 aviobj = addframe(aviobj,getframe);
  81.                 clf;
  82.                 
  83.                 imshow(uint8(B2d1))
  84.                 aviobj = addframe(aviobj,getframe);
  85.                 clf;
  86.                 
  87.                 imshow(uint8(B3d1))
  88.                 aviobj = addframe(aviobj,getframe);
  89.                 clf;
  90.                 
  91.                 imshow(uint8(P4d1))
  92.                 aviobj = addframe(aviobj,getframe);
  93.                 clf;
  94.                 
  95.                 imshow(uint8(B5d1))
  96.                 aviobj = addframe(aviobj,getframe);
  97.                 clf;
  98.                 
  99.                 imshow(uint8(B6d1))
  100.                 aviobj = addframe(aviobj,getframe);
  101.                 clf;
  102.                 
  103.                 imshow(uint8(P7d1))
  104.                 aviobj = addframe(aviobj,getframe);
  105.                 clf;
  106.                 
  107.                 imshow(uint8(B8d1))
  108.                 aviobj = addframe(aviobj,getframe);
  109.                 clf;
  110.                 
  111.                 imshow(uint8(B9d1))
  112.                 aviobj = addframe(aviobj,getframe);
  113.                 clf;
  114.                 
  115.                 imshow(uint8(I10d1))
  116.                 aviobj = addframe(aviobj,getframe); 
  117.                 clf;
  118.             else
  120.                 
  121.                 imshow(uint8(B2d1))
  122.                 aviobj = addframe(aviobj,getframe);
  123.                 clf;
  124.                 
  125.                 imshow(uint8(B3d1))
  126.                 aviobj = addframe(aviobj,getframe);
  127.                 clf;
  128.                 
  129.                 imshow(uint8(P4d1))
  130.                 aviobj = addframe(aviobj,getframe);
  131.                 clf;
  132.                 
  133.                 imshow(uint8(B5d1))
  134.                 aviobj = addframe(aviobj,getframe);
  135.                 clf;
  136.                 
  137.                 imshow(uint8(B6d1))
  138.                 aviobj = addframe(aviobj,getframe);
  139.                 clf;
  140.                 
  141.                 imshow(uint8(P7d1))
  142.                 aviobj = addframe(aviobj,getframe);
  143.                 clf;
  144.                 
  145.                 imshow(uint8(B8d1))
  146.                 aviobj = addframe(aviobj,getframe);
  147.                 clf;
  148.                 
  149.                 imshow(uint8(B9d1))
  150.                 aviobj = addframe(aviobj,getframe);
  151.                 clf;
  152.                 
  153.                 imshow(uint8(I10d1))
  154.                 aviobj = addframe(aviobj,getframe);
  155.                 clf;
  156.         end
  158.            
  159. end
  160. aviobj = close(aviobj);
  161. toc