Efficient way to set specific range of pixels to zero.
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Ivan Shorokhov
el 23 de Abr. de 2015
Comentada: Ivan Shorokhov
el 24 de Abr. de 2015
Hello everybody,
I have gray image with pixels from 0 to 255. And I would like to set pixel from 90 to 100 to zero.
I've wrote following code:
new_gray=gray;
new_gray(gray>90&gray<100) = 255;figure;imshow(new_gray);
And it seems to be working fine, but I'm wondering, if there are any other ways of doing it?
Thanks in advance.
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Image Analyst
el 23 de Abr. de 2015
You could use intlut(). Something like
lut = gray(256);
% Make gray levels 91 through 99 be 0
lut(92:100) ;
new_gray = intlut(grayImage, lut);
DON'T name your image gray. That is the name of a built-in function that creates a colormap.
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