| 摘要 |
A method for estimation of motion to determine change of location of a searched area (611) between a first frame (610) and a second frame (620) of a video image, the method comprising the steps of: determining the searched area (611) on the first frame (610); determining, on the second frame (620), an area of search (622) around the position of the searched area (611); performing a search for the searched area (611) on the second frame (620) within the area of search (622). After determining the searched area (611), checking whether the searched area (611) belongs to a moving object by: receiving (212) a depth map (110) for the first frame (610) and the second frame (620) of the video image; calculating a first axis histogram and a second axis histogram (120, 502, 503) for each depth map (110); applying a first object detection method (231, 232, 236) to track objects based on the contents of the images (100) and/or the depth maps (110); applying, in parallel to the first object detection method (231, 232, 236) a second object detection method (233, 234, 237) to track objects based on the contents of the histograms (120, 502, 503) of the depth maps (110); determining a rectangle (624) within which the tracked object is located based on comparison of the results of the first object detection method (231, 232, 236) and second object detection method (233, 234, 237); wherein the area of search (622) is limited to the area (625) within the determined rectangle (624). |
