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From: talal hammouri on 17 Mar 2010 09:50
Hi all,

if any body have source code (m-files) for video compression using matlab that help me so much in my research.

Thanx

From: Steven Lord on 17 Mar 2010 13:01

"talal hammouri" <talalah(a)yahoo.com> wrote in message
news:hnqmn2$po1$1(a)fred.mathworks.com...
> Hi all,
>
> if any body have source code (m-files) for video compression using matlab
> that help me so much in my research.

Here's my super-duper compression routine for a general matrix.
Decompression is left as an exercise to the reader; I will NOT help write
that routine, as I've given too much help already :)

function y = compression(M)
if ndims(M) > 2
error('compression:matrixOnly', 'COMPRESSION can only accept a
matrix.');
end
[rows, cols] = size(M);
% Determine the minimum space required to store the compressed matrix
minrc = min(rows-cols, cols-rows);
indices1 = rows:minrc:cols;
indices2 = cols:minrc:rows;
% Use the shorter set of indices for better compression
if length(indices1) > length(indices2)
RCI = indices2;
else
RCI = indices1;
end
% Use FFTrig-based compression for best results
y = cos(ifft2(sin(fft2(M(RCI, RCI)))));

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ


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