Patent ID: 9325966
Filing Date: 2016-04-26
CPC Classification: G01B,G01N,H04N

Claim Text:
1. A method of measuring depth of a scene using a multichannel projector with narrow spectrally banded channels each with a characteristic peak wavelength and a multispectral camera with broad spectrally banded channels, wherein the spectrums of the spectrally banded channels of the multichannel projector are narrower than the spectrums of the spectrally banded channels of the multispectral camera which are broader, wherein the spectral sensitivities of the camera channels at the characteristic peak wavelengths of the projector channels form a band diagonal matrix, the method comprising: projecting a multispectral binary pattern onto the scene with the multichannel projector, wherein the multispectral binary pattern is composed of binary images, one for each channel of the projector; capturing one or more images of the scene with the multispectral camera, each image being captured as a multispectral image; converting each multispectral image into multiple binary images, one binary image for each projector channel; and recovering the depth of the scene based on the multiple binary images, one binary image for each projector channel.