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Video scene text contains semantic information and thus can contribute significantly to video indexing and summarization. However, most of the previous approaches to detecting scene text from videos experience difficulties in handling texts with various character size and text alignments. In this paper, we propose a novel algorithm of scene text detection and localization in video. Based on our observation...
Video text provides precise and meaningful information about video content. Video text extraction is a crucial step to retrieve video text characters. Most of papers perform video text extraction in a whole text row. Compared with whole text row extraction, single character extraction can achieve higher accuracy because the background of single character is relatively simple. However, character segmentation...
Mosaic block is easily occurred in the TV signals, which will cause the degraded video. In this paper, we propose an automatic degraded video detection approach based on support vector machine and template matching to detecting mosaic block in video. We develop a detection algorithm based on a cascade of processing steps as follows. First, we use DWT to remove the vertical high frequency of a frame...
A common form of serious defect in video is pixel-shift. It is caused by the consecutive pixels loss introduced by video transmission systems. Pixel-shift means a large amount of pixel shifts one by one due to a small quantity of image data loss. The damaged region in affected frame is usually large, and thus the visual effect is often very disturbing. So far there is no method of automatically treating...
This paper presents a hybrid 1D motion estimation algorithm which combines pixel-based and region-based approaches that can give depth images from translational video sequences with very high quality. Firstly, we combine the motion information estimated by a variational regularization approach and by the Gabor transform through histogram analysis to identify those regions with zero motion (like for...
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