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Focusing systems play an important role in a variety of optical measurements and detection instruments. In this paper, several kinds of auto-focusing methods were described and the relevant focusing evaluation functions were introduced based on image processing methods. An auto-focusing system based on image processing was designed by using the TMS320F2812 digital signal processing chip as a platform...
Scene change detection is an essential step for archived films restoration. But the image quality of archived films often degrades gradually which makes false detection during shot segmentation. This paper focuses on some problems about the scene change detection in archived films. For abrupt change shot detection, the difference between histograms of block-bases adjacent frames and across frames...
A novel and effective approach to the global motion estimation and moving object extraction is proposed in this paper. Firstly, the translational motion model was used by the fact that complex motion can be decomposed as a sum of translational components. Then in this application, the edge gray horizontal and vertical projections were used as the block matching feature for the motion vector estimation...
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