Patent ID: 8854473

Claim:
A tracking system for image object region, comprising: an object region tracking and picturing module constructed on a moving platform of a mobile end, said object region tracking and picturing module is a part of the moving platform; and a remote control module constructed on another platform, said remote control module communicating with said object region tracking and picturing module via a digital network for transmitting required information; wherein said object region tracking and picturing module uses a real-time image backward search technique to store at least an image frame previously captured on said moving platform into a frame buffer, and starts to track an object region from a position selected by said remote control module, and finds out a relative position on a newest image frame captured by said moving platform for said tracked object region; wherein both said object region tracking and picturing module and said remote control module have a data communication device to transmit information required by said object region tracking and picturing module and said remote control module via said digital network; and said system further includes a buffer frame controller to reduce a memory requirement of said buffer frame by determining replaceability of image frames based at least partly on a repetition rate of the image frames, a time counter and a frame difference counter to perform detection for automatic termination of object region tracking, and said frame buffer and an image sensor, and said at least an image is extracted from said image sensor and stored in said frame buffer; wherein said determining replaceability is further based at least partly on determining a percentage of a first frame that will also appear in a second frame, and if the percentage is determined to be higher than a certain percentage, the first frame is determined to be replaceable by the second frame.