sorting of correlation values is done. it works well with 2×2 but not working with 16×16 or 8×8.. can u tell me why is it so…
can u tell me how to do it?
blockSizeR = 128;% Rows in block.
blockSizeC = 128; % Columns in block.
for row = 1 : blockSizeR : rows for col = 1 : blockSizeC : columns row1 = row; row2 = row1 + blockSizeR - 1; row2 = min(rows, row2); col1 = col; col2 = col1 + blockSizeC - 1; col2 = min(columns, col2); oneBlock = grayImage(row1:row2, col1:col2); subplot(2,2,blockNumber); imshow(oneBlock); glcm=0; glcm=graycomatrix(oneBlock); stats=graycoprops(glcm,'correlation'); fprintf('\ncorrelation values are\n %d',stats); caption2 = sprintf('Block #%d\n of %d', blockNumber,blocks); title(caption2, 'FontSize', fontSize); blockNumber = blockNumber + 1; end end[sortedStats,blockNumber]=sort([stats.Correlation]);fprintf('\nblock #%d = %f\n',[blockNumber(:),sortedStats(:)].');
here i m dividing the image into non-overlapping blocks of size 2×2. i m caculating the glcm of each and every block and after that m caculating the correlation of each block..
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