Patent ID: 11871157
Assignee: PIXART IMAGING INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method of an optical sensor device, comprising:
entering a calibration mode to automatically define a region of interest as a masking region which comprises at least one pixel image captured by at least one pixel unit of the optical sensor device; and
selectively ignoring a motion, detected within the at least one pixel unit comprised by the masking region, on an incoming monitoring image captured by the optical sensor device in a normal operation mode;
wherein a specific pixel unit is automatically determined as one pixel unit comprised by the masking region and is associated with a background motion when in the calibration mode a pixel difference between the specific pixel unit's pixel image and a reference pixel image is greater than a specific pixel threshold.