I need to enhance a perfusion image to see the blood vessels in Laser Speckle Imaging.
Tried regionprops(), medfilt2(), imdilate(). finally I tried this code
newim = adjcontrast(im1, gain, cutoff); if isa(im1,'uint8'); newim = double(im1); else newim = im1; end % rescale range 0-1
newim = newim-min(min(newim)); newim = newim./max(max(newim)); newim = 1./(1 + exp(gain*(cutoff-newim))); % Apply Sigmoid function
figure, imshow(newim);
The outcome is "Undefined function or variable 'adjcontrast'."
Thank you so much in advance
Surya
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