Manual thresholding cropping [image processing]
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi. May i know if manual thresholding allows autocropping? where i set T a value, bw = im2bw(J,T);
because usually auto thresholding was done with autocropping. but i was told me to set a value for my image instead of using graythresh.
0 Kommentare
Antworten (1)
Image Analyst
am 8 Nov. 2012
Cropping and thresholding are two totally separate and independent operations. One operation does not need, depend on, allow, or enable the other operation at all. I would not say that autothresholding is usually done with autocropping - not in general, though it may be in some specific situation you maybe referring to, like your co-worker's program. You can use graythresh() if you want to determine a threshold value, though in my experience it seldom selects the best threshold. It seems to work best for high contrast situations where foreground and background are well separated in the histogram (i.e., they have vastly different intensities).
4 Kommentare
Image Analyst
am 8 Nov. 2012
You mean like
submatrix = fullMatrix(row1:row2, col1:col2);
? What about this threw an exception?
Siehe auch
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!