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error in converting image to binary

Asked by FIR on 1 Mar 2012

I have a rgb image inwhich the image consists of two persons,i want to make the background black and persons in white colour,i tried im2bw but i get only whit backgroubf,no image duisplayed ,please help

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FIR

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2 Answers

Answer by Pugazhendhi on 1 Mar 2012

First convert to grayscale(rgb2gray) then use im2bw

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FIR on 1 Mar 2012

I tried but getting same result

Pugazhendhi
Answer by Walter Roberson on 1 Mar 2012

See graythresh()

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Walter Roberson

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