Patent ID: 9609306
Date: 2017-03-28
CPC Classifications: G01B,G06T,H04N

Claim:
1. A method of image processing in a structured light imaging device, the method comprising: receiving a captured image of a scene, wherein the captured image is captured by a camera of a projector-camera pair included in the structured light imaging device, and wherein the captured image includes a pre-determined hierarchical binary pattern projected into the scene by a projector of the projector-camera pair, wherein the pre-determined hierarchical binary pattern was formed by iteratively scaling a lower resolution binary pattern to multiple successively higher resolutions, the iterative scaling being performed by equiprobably replacing ones and zeros using templates, each of the templates being a two-dimensional pattern of zeros and ones; rectifying the captured image to generate a rectified captured image; extracting a binary image from the rectified captured image at full resolution and at each resolution used to generate the pre-determined hierarchical binary pattern; and using the binary images to generate a depth map of the captured image.