Colour and Black & White Images

Hello,
I was just wondering about how can i classify or check if:
an image is colour or black and white?
Thank you very much for your help.

Couple of ideas....
Some graphic file formats give the number of
colours.
if that is 2, then it's a monochrome picture
But I think the real question you're asking is, how
can I tell if an image is
grey scale.
You'd have to go through each pixel in the image, and
check.
When specifying colours in RGB, grey colours are
easy enough to check.
Eg.
( 0, 0, 0 ), ( 100, 100, 100 ), ( 148, 148, 148
)..... ( 255, 255, 255 )
So, if I'm correct.... the following function would
check a single pixel....
public boolean isGreyScale ( Colour aPixelColour )
int r = aPixelColour.getRed();
int g = aPixelColour.getGreen();
int b = aPixelColour.getBlue();
if ( ( r == g ) && ( g = b ) )
return ( true );
else
return ( false );
}regards,
OwenThe problem is that my program is a image searcher tool.
I have a large number of images and i need a good searching technique. If i have to go through each pixel in every image, it will take too long for an effective application.
thank you very much for your help

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Colour and Black & White Images

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