ALEXANDRIA, Va., March 19 -- United States Patent no. 12,254,640, issued on March 18, was assigned to NEC Corp. (Tokyo).

"Object tracking device, object tracking method, and recording medium" was invented by Takuya Ogawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an object tracking device, the extraction means extracts target candidates from images in a time-series. The first setting means sets a first search range based on frame information and reliability of a target in a previous image in the time-series. The tracking means searches the target from the target candidates extracted within the first search range using the reliability indicating similarity to a target model, and tracks the targe...