Algorithms and system for object-oriented content-based video search
AssigneeThe Trustees of Columbia University in the City of New York
InventorsShih-Fu Chang, William Chen, Horace J. Meng, Hari Sundaram, Di Zhong
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Abstract
Object-oriented methods and systems for permitting a user to locate one or more video objects from one or more video clips over an interactive network are disclosed. The system includes one or more server computers (110) comprising storage (111) for video clips and databases of video object attributes, a communications network (120), and a client computer (130). The client computer contains a query interface to specify video object attribute information, including motion trajectory information (134), a browser interface to browse through stored video object attributes within the server computers, and an interactive video player.
Claims10
A method for extracting video objects from a video clip which includes at least one recognizable attribute, comprising the steps of:
- a. quantizing a present frame of video data therein by determining and assigning values to different variations of said at least one attribute represented by said video data to thereby generate quantized frame information;
- b. performing edge detection on said frame of video data based on said at least one attribute to determine edge points in said frame to thereby generate edge information;
- c. receiving information defining one or more segmented regions from a previous frame, and
- d. extracting regions of video information from said present frame which share said at least one attribute by comparing said received segmented regions to said quantized frame information and said generated edge information.
Dependencies are inferred from the claim text.