image compression using run length ecoding

  • by farsun 11:18 PM
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This program takes any image, converts it to binray, and performs RLE on the binary image



%
%Progam to calculate RUN LENGTH ENCODING
%the prog takes any image, converts it to binray, and performs RLE on the binary image
function[rle]=rlemain(f)
I=imread(f);
imshow(I);title('original image');
level=graythresh(I);
bw=im2bw(I,level);
figure;imshow(bw);title('binary image');
a=bw'; a=a(:); a=a';
a=double(a);
rle(1)=a(1); m=2; rle(m)=1;
for i=1:length(a)-1
if a(i)==a(i+1)
rle(m)=rle(m)+1;
else
m=m+1; rle(m)=1; %dynamic allocation and initialization of next element of rle
end
end
display(rle);
%to run the prog type rlemain('imagefilename.ext') at the command window
%the program will return RUN LENGTH ENCODED (row)martix
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9 comments

  1. AnonymousDecember 12, 2010 at 3:33 PM

    hey,
    i want the source code for compression of text data using shannon-fano coding in matlab...
    plz HELP ME....!!!

    ReplyDelete
  2. ChrysanthemumMay 21, 2012 at 10:43 PM

    Do you have any idea how to do Segmentation of an image by region growing? Thanks!

    ReplyDelete
  3. didiksulisJune 10, 2012 at 6:53 PM

    hi, can you help me? i'm looking for source code for image compression using huffman algorithm. thanks

    ReplyDelete
  4. AnonymousSeptember 16, 2012 at 7:10 AM

    I wanted a matlab code for image compression using huffman, rle,and lzw and comparing them on the basis of compression ratio.....CAn u please help me out. I will be very greatful to you......My project is completely dependent on it. Thank you

    ReplyDelete
    Replies
    1. AnonymousOctober 15, 2012 at 6:07 AM

      i don know.....btn when is ur project..?/ll try to help u ....asap...

      Delete
  5. AnonymousOctober 15, 2012 at 5:41 AM

    what will be output of the above code????pls reply as soon as possible.....

    ReplyDelete
  6. AnonymousOctober 15, 2012 at 5:52 AM

    pls mail the o/p to dis id : arshfar@gmail.com

    ReplyDelete
  7. AnonymousMay 29, 2013 at 5:03 AM

    can i know is that possible for the RLE do in the color image?

    ReplyDelete
  8. UnknownAugust 18, 2014 at 12:24 AM

     Excellent tips. Really useful stuff .Never had an idea about this, will look for more of such informative posts from your side.. Good job...Keep it up
    Software Photo Slideshow

    ReplyDelete