Method and apparatus for projector camera communication

A system comprising:

• a camera configured to capture a first image;
• at least one processor coupled to the camera, the at least one processor configured to:
• in response to determining that the first image is an opening pattern, instruct the camera to capture a second image, wherein the camera is configured to capture the second image;
• in response to determining that the second image is a command pattern:
• instruct the camera to capture a third image, wherein the camera is configured to capture the third image;
• and
• in response to determining that the third image is a closing pattern, detect a command sequence.

A method comprising:

• obtaining, by at least one processor, an image;
• counting, by the at least one processor, a number of blobs in the image and a number of holes per blob;
• determining, by the at least one processor, a hole count confidence level for the number of holes per blob the image;
• and
• in response to determining that the hole count confidence level is greater than a threshold, identify a command based on the number of holes per blob.