Patent ID: 11880992
Assignee: AMBARELLA INTERNATIONAL LP
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 19:
20. An apparatus comprising:
an interface configured to receive pixel data;
a structured light projector configured to generate a structured light pattern; and
a processor configured to (i) process said pixel data arranged as video frames comprising said structured light pattern, (ii) perform computer vision operations on said video frames to detect a size of a face area of said video frames, (iii) determine a scale ratio in response to said size of said face area, (iv) extract said structured light pattern from said video frames, (v) generate a downscaled structured light image and (vi) generate a depth map in response to said downscaled structured light image and a downscaled reference image, wherein
(i) a downscale operation is performed in response to said scale ratio and said structured light pattern to generate said downscaled structured light image,
(ii) said scale ratio is calculated to enable said downscaled structured light image to be generated with a sufficient number of depth pixels, and
(iii) said downscaled structured light image has (a) a lower resolution than said structured light pattern and (b) a same aspect ratio as said structured light pattern after a cropping operation.