convert an image into gradient image

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I am doing research work in Image Processing. I am new to this field. So Please give me an idea to convert a normal .jpg image into gradient image. But condition is not using built-in methods in java.

Please help me........

Thank You...

Posted 6-Apr-10 19:44pm

J. Golda Margret Sheeba

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lukaszbl · Accepted Answer · 2010-04-06T20:24:00

Solution 1

Hi,
Have you tried this?: http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale[^]
Provided you have pixel colors in RGB formula for luminance is quite simple: (11*R + 16*G + 5*B) /32

Hope it helps,
L

Posted 6-Apr-10 20:24pm

lukaszbl