| 摘要: |
| 光照问题是镜头检测中的一个重要的问题.光照变化严重干扰了许多镜头检测的精度.而现有的光照不变的帧间相似性测度计算代价高而降低了算法的速度.为此,提出了一种新的光照不变测度,并将它用于视频镜头检测.这种新的测度是基于图像中的边缘信息.它先提取了图像中的边缘,然后二值化,最后把背景的面积作为光照不变测度.理论分析及实验数据都证明了该测度的有效性.与同类测度相比,提高了速度而没有牺牲精度. |
| 关键词: 视频分割 直方图 光照变化 溶解 扫换 |
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| 基金项目:Supported by Foundation of State Key Basic Research 973 Program under Grant No.G1998030500(973国家重点基础研究发展项目基金);the National High Technology Development Program of Chiila under Grant No.863-306-QN99-2(国家863高科技发展计划) |
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| An Illumination Invariant Measure in Detecting Scene Breaks |
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LI Da long,LU Han qing
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| Abstract: |
| Illumination variation inherent in the video production process is a serious problem in video shot detection. It disturbs the precision of many shot detection algorithms. The computing cost of the current illumination invariant measures is high thus lower the speed of the algorithm. A new measure is proposed in the paper to detect shots in video. The new measure is based on the edges in the frames. The edge maps are extracted first then it is thresholded and the authors take the area of the background as the illumination invariant measure to perorm the detection of shots.The effectiveness of the measure had been validated by theoretic analysis and ex-perimental results.Compared woth the existing measures,the new measure improves the speed and reserves the precision of the detecting algorithms. |
| Key words: video partitioning histogram illumination variation dissolve wipe |
