On Sat, Aug 9, 2008 at 9:53 PM, Carsten Neumann <[EMAIL PROTECTED]>wrote:
> Hello Sajjadul,
>
> Sajjadul Islam wrote:
> > Hi Carsten,
> >
> > thanks for the hint.
> >
> > But could not manage to identify which is greyscale or not.
> >
> > I read an greyscale image and then checkig with the following condition
> > if it is a grey-scale image or not.
> >
> > if(tga->getPixelFormat() != Image::OSG_L_PF)
> > {
> > cout << "not a geryscale image......conversion necessary" << endl;
> > }
> >
> > Even after i am reading a greyscale image the condition becomes true.
>
> What value does tga->getPixelFormat() return ?
>
6407
>
> > What am i missing?
>
> I suppose it means you actually have an RGB image that just happens to
> be in shades of grey, i.e. for every pixel there is a red, green and
> blue value, but they are all the same.
yes Carsten, you are right .....i checked that by converting the image at
hand to the grey scale format
>
> The only way I can think of to detect that would be to check all pixels
> whether they are a shade of grey.
>
> Hope it helps,
> Carsten
>
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