Build ManyMasks and run it on an iOS device. For best results, obey the following guidelines:
Work in an area with bright lighting and no shadows.
Fill most of the frame with the face so that the image's resolution is not wasted on background areas.
Capture an upright image of the face. This is especially important for a cat because our algorithm does not address the problem of locating the eyes and nose in a tilted cat face. To entice a cat to look straight at the camera, you might need to use a toy or treat.
Capture a similar expression on the two faces. Like humans, cats have expressive faces, and different cats may develop different expressions as a form of communication with their humans. Here are some examples of my cats' expressions:
Wide eyes: Alert or assertive
Narrow eyes: Relaxed or submissive
Yawn: "Hello, my human."
Meow: "Pay attention, my human."
Tongue between lips: Paying attention to a scent, possibly a pleasant scent such as "my...