Gray colorspace has no effect

[mkoppanen]

Version: ImageMagick 6.5.4-3 2009-07-21 Q16 OpenMP http://www.imagemagick.org
Copyright: Copyright (C) 1999-2009 ImageMagick Studio LLC

Test code:

Code: Select all

#include <stdio.h>
#include <wand/MagickWand.h>

int main()
{
        MagickWand *wand;
        MagickWandGenesis();

        wand = NewMagickWand();

        MagickReadImage(wand, "magick:rose");
        MagickSetImageColorspace(wand, GRAYColorspace);

        MagickWriteImage(wand, "test_gray.png");
        wand = DestroyMagickWand(wand);

	MagickWandTerminus();
        return 0;
}

After:

Code: Select all

$ identify -verbose test_gray.png | grep Colorspace
  Colorspace: RGB

Am I doing something wrong?

[magick]

Use MagickSetImageType() with GrayscaleType instead.