ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,633, issued on May 12, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Vehicle camera lens obstruction" was invented by Jiabin Shen (Burnaby, Canada), Jay Blackwell (Detroit) and Yun Qian Miao (Waterloo, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for processing vehicle camera lens obstructions including obtaining an image from a vehicle camera, generating a first camera lens dirt map according to pixel texture richness and color spectrum levels extracted from the image, obtaining a sequential feed of multiple frames from the vehicle camera, generating a second camera lens dirt map according to at least one salient ...