Abstract
The goal of this paper is to justify the reliability of the different elements in the compressed domain used in low-level shot boundary detection. Three elements at different level of decoding, namely, chromatic barycenter, luminance and macroblock size information, are extracted from MPEG video for examination. Overviews with analysis of each element are done, followed by a global threshold sensitivity and detection performance test. To detect the stability of the elements under different circumstances, we utilized statistical methods to compare the different elements, and each element is tested with video clips from different fields. We found that both macroblock size and luminance elements could be unstable under certain conditions, and detection in the color domain is essential for accurate shot boundary detection. By utilizing the approximation for chromatic barycenter, fast and accurate shot boundary detection could be achieved.
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