Plz anyone can give me matlab code for image compression with run length encoding
It's so simple, I am definitely sure you can do it yourself, which by the way is good to practice your programming skills.
The pseudo code reads something like that, assuming the array to encode is named in_buf (not actual matlab syntax):
cur_val = in_buf[0]
i = 1, k = 1, o = 0
while i < length(in_buf) {
if in_buf[i] == cur_val {
k += 1
}
else {
out_buf[o] = k
out_buf[o+1] = curval
o += 2
cur_val = in_buf[i]
k = 1
}
i += 1
}
Sure you can do more fancy stuff using find and cumsum, which is left as exercise :-)
Sorry can u check this code
function [im] = rlemain (infile,outfile)
% Example of use:
% out=rlemain('input_image.dcm','output_image.dcm');
I = dicomread(infile);
I = mat2gray(I);
I=im2uint8(I);
figure('Name','Input image');
imshow(I);
level=graythresh(I);
bw=I;
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
figure;imshow(bw);title('RLE image');
dicomwrite(bw,'Rle image.dcm');
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