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How can I find saturated pixels in an image?

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meghana sampath
meghana sampath 2011-3-3
How can I find saturated pixels in an image?

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回答（2 个）

Matt Tearle
Matt Tearle 2011-3-3
idx = all(A==255,3); would give you a logical array that is true at all white pixels (in a uint8 representation).
Otherwise, as Sean asks, what do you mean by "saturated"?
Tim Zaman
Tim Zaman 2011-4-6
convert to LAB with the RGB2LAB function.. that splits into three components; the dimensions will be [L;A;B]instaed of [R;G;B]... then you could state something like saturation=sqrt(A_component^+B_component^); which will be your level of saturation, then you just set a threshold. more matlab code on that is on http://www.timzaman.nl/?category_name=gen_matlab&lang=en

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