Patent ID: 9460522
Filing Date: 2016-10-04
CPC Classification: G06K,G06T

Claim Text:
1. A computer-implemented method for updating a background model associated with a scene depicted in a sequence of video frames captured by a video camera, the method comprising: receiving image data for a current video frame, wherein the image data classifies each pixel in the current video frame as depicting either foreground or background; and for each pixel in the current video frame classified as depicting scene background, updating corresponding pixel data in the background model based on one or more color channel values of the pixel in the current video frame, wherein the pixel data includes (i) a distribution modeling each color channel value based on observed color channel values for the pixel in the sequence of video frames and (ii) a mean and a variance associated with the distribution for each color channel and wherein updating the corresponding pixel data in the background model based on the one or more color channel values of the pixel in the current video frame comprises, for each of the one or more color channels: