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 am i missing?
Cheers
Sajjad
On Sat, Aug 9, 2008 at 12:00 AM, Carsten Neumann <[EMAIL PROTECTED]>wrote:
> Hello Sajjadul,
>
> Sajjadul Islam wrote:
> > Hello,
> >
> > I am trying to generate height map terrain by reading a tga file.
>
> you might want to take a look at the code in Source/Contrib/Terrain (by
> default it is not compiled into the library though - see
> Source/Contrib/README).
>
> > Is there any function within Image class to detect if the image read
> > is RGB image or greyscale
>
> Image::getPixelformat() returns the format of the data stored in the
> image (see Source/System/Image/OSGImage.h for possible values). For a
> greyscale image it would be OSG_L_PF, for RGB OSG_RGB_PF and for RGBA
> OSG_RGBA_PF.
>
> > and if it is an RGB is there any functionality
> > to convert that to greyscale image?
>
> You can use Image::reformat to convert to a different pixel format; it
> will do a pretty simple conversion, nothing fancy.
>
> Hope it helps,
> Carsten
>
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