Patent ID: 9734433
Date: 2017-08-15
CPC Classifications: G06T

Claim:
1. A method, comprising: configuring a display to output a first image comprising a bright white region on a first portion of the first image screen, with a remainder of the first image being dark, wherein the first image as output from the display illuminates an environment; capturing a second image of a portion of the environment within a field-of-view of a camera, as the portion of the environment is illuminated by the first image output by the display; configuring the display to output a third image comprising the bright white region on a second portion of the third image, with the remainder of the third image being dark, wherein the third image as output from the display illuminates the environment; capturing a fourth image of the portion of the environment within the field-of-view of the camera, as the portion of the environment is illuminated by the fourth image output by the display; determining that a first region within the field-of-view of the camera includes a specular surface based on a first difference in luminance from the first region as captured in the second image and luminance from the first region as captured in the fourth image exceeds a threshold value; determining that a second region within the field-of-view of the camera includes a diffuse surface based on a second difference in luminance from the second region as captured in the second image and luminance from the second region as captured in the fourth image not exceeding the threshold value; capturing a third image and a fourth image of the portion of the environment within the field-of-view of the camera; and comparing changes between the third and fourth image to identify motion within the field-of-view of the camera, excluding changes in the first region.