can any one tell me what is the meaning of mask = redChannel <= 20 & greenChannel <= 20 & blueChannel <= 20;

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asthana
asthana 2014-5-7
评论： asthana 2014-5-7
mask = redChannel <= 20 & greenChannel <= 20 & blueChannel <= 20; this statement is in the test.m programe so any one can explain me why we use this line code i attached the code

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Walter Roberson
Walter Roberson 2014-5-7
The result would be to detect anything "close" to absolute black.

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