Patent ID: 9602870
Date: 2017-03-21
CPC Classifications: G06K,H04N

Claim:
1. A method for obtaining a Video-Signal Camera Capture (VSCC) from a background scene, the method comprising the steps of: (a) pointing a camera-enabled (CEN) device at a video-signal surface; (b) detecting a location of said video-signal surface in the background scene on said CEN device; (c) extracting at least one frame from said detected video-signal surface; (d) during said step of extracting, splitting at least one respective color image of said at least one frame into at least two respective channels each having a respective threshold value; (e) determining whether a previous channel and a previous threshold value from a previous frame were successful in detecting at least one quadrangle; (f) if said step of determining was successful, skipping to said step (h); (g) choosing at least one alternate respective channel having a respective new threshold value, wherein said at least one alternate respective channel is at least one new respective channel or said previous channel having a respective different threshold value; (h) detecting at least one quadrangle in one of said at least two channels using said previous channel and said previous threshold value, or using said at least one alternate respective channel and said respective threshold value; (i) If said step of detecting said at least one quadrangle was successful, storing an indicator of which channel was successful and a respective successful threshold value; (j) if said step of detecting said at least one quadrangle was not successful, iterating said steps (g)-(i); and (k) providing respective coordinates for each detected quadrangle.