Shot Boundary Detection Algorithm Based on Mutual Information
X Chen · Jisuanji gongcheng · 2014
Aiming at improving the precision of shot boundary detection, a new algorithm based on mutual information is proposed. The algorithm adopts the mutual information, which is calculated based on non-uniform block histogram in HSV space, as the difference measurement between frames. Combined with the corresponding threshold strategy and the time's window strategy, the cut and gradual change shots and shot boundaries made by computer effects technology can be successfully detected. Experiments conducted on many kinds of videos such as advertising, variety shows and news video show that, compared with the original twin-threshold method, the proposed algorithm enhances the detection results by 11.9% in cut shots and 7.6% in gradual shots. The algorithm is robust for camera movement and the light changes on shot detection, with higher recall rate and precision rate.