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converting JPEG colour image into gray scale image??

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yo123

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converting JPEG colour image into gray scale image??

Mar 5th, 2008

Does anyone the code to convert a JPEG colour image into a gray scale image??...

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Re: converting JPEG colour image into gray scale image??

Mar 5th, 2008

http://blog.codebeach.com/2008/03/co...ale-image.html

it worked for me

Last edited by Nilesh Pagar; Mar 5th, 2008 at 8:34 am.

Nilesh Pagar

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Re: converting JPEG colour image into gray scale image??

Mar 5th, 2008

If you need to make the calculations yourself at the pixel level, you first calculate the luminence from the RGB values y = .30*R + .59*G + .11*B and then set the R,G,and B values to that calculated value.
http://en.wikipedia.org/wiki/Graysca...r_to_grayscale

Drawing the image to a new BufferedImage of TYPE_BYTE_GRAY, as mentioned in the previous post, is probably the easiest though.