how to calculate mean and variance of the image using W*W sliding window
9 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
contrast enhancement is to improve the contrast of lesions for detection using a w*w sliding window with assumption that w is large enough to contain a statistically representative distribution of the local variation of lesions. where the sigmoid function used with the maximum and minimum intensity values of smooth green channel image,respectively. mean and variance of intensity values with in the window.
CAN U HELP ME WITH CODING
0 Commenti
Risposta accettata
Image Analyst
il 21 Ago 2013
Try this:
meanImage = conv2(grayImage, ones(w)/w^2);
stdDevImage = stdfilt(grayImage, ones(w)/w^2);
varianceIMage = stdDevImage .^2;
10 Commenti
Image Analyst
il 27 Ago 2013
Use the 'same' option in conv2 to get the same size image.
meanImage = conv2(grayImage, ones(w)/w^2, 'same');
Più risposte (0)
Vedere anche
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!