Support for Different Image Types #68
Description
The isaac_ros_apriltag node requires rgb8 or bgr8, though it immediately converts to 8bit grayscale. It would be very nice if it could accept gray8 directly, to say nothing of nv12 or rgba (which is what the Orin likes to talk anyway). For monochrome cameras, it's onerous to generate a 'fake' RGB image just so the apriltag node can convert back to gray8.