Why does GEM say that it can't handle a gray image?
Up to Table of ContentsThis FAQ applies to: Any version.
This error message occurs whenever a pix object receives a gray8 image and the implementor hasn't provided a way to deal with that format of image.
(Implementors often only provide functions for GEM's native color-format RGBA. Any other color-format (like BGR) will try to call the function for gray8 images, which might not be supported.)
If you do not want to change the image format with some extern image-programm (like Photoshop or the Gimp) you might want to try [pix_rgba] or harass whoever made the object to add the functionality.