Abstract To implement the fast retrieval for compressed video data, a retrieval method based on the fluctuation of frame data counts is proposed. The data counts for each frame in compress domain are calculated to acquire the data counts curves of equal-length query segment and target video. Then, the query segment is slided on the target video after the alignment of frame data I, and the length of sliding window is the same as the length of a group of picture. The differences of data counts fluctuation between the query clip and the target video are measured. Finally, the similarity result is given according to the designated threshold. The extraction of high dimension feature vector for each frame is omitted in the proposed method, and a video clip is represented by a single vector instead of an array of high dimension vectors. The experimental results show that the video retrieval is speeded based on the proposed method. Meanwhile, a high accuracy is achieved. Therefore, the method can be used for fast retrieval on compressed video database and online video segment matching to find the target video.
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2012, Vol. 25 
