Getting Greyscale pixel value from RGB colourspace in Java using BufferedImage
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by Andrew Bolster
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Published on 2010-03-23T11:47:10Z
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2010/03/23
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Anyone know of a simple way of converting the RGBint value returned from <BufferedImage> getRGB(i,j) into a greyscale value?
I was going to simply average the RGB values by breaking them up using this;
int alpha = (pixel >> 24) & 0xff;
int red = (pixel >> 16) & 0xff;
int green = (pixel >> 8) & 0xff;
int blue = (pixel) & 0xff;
and then average red,green,blue.
But i feel like for such a simple operation I must be missing something...
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