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This paper presents an improved shadow discriminating method by dividing the cast shadow region into sub regions. We analyze the difference caused by distinct illumination condition for each sub shadow region, and then propose a classification method. We divide cast shadow into deep umbra shadow, shallow umbra shadow and penumbra shadow through gray-level and color features. For color similarity examination,...
This paper presents a cast shadow discriminating method through the edge information of traffic images. In the process, we separate vehicle edges and shadow edges by analyzing their difference on the edge extraction image. In the paper, we will propose a neighbourhood detection algorithm and a line detection algorithm in locating the main curve of shadow edge. By the two algorithms the shadow edges...
This paper makes an effort on locating sub-shadow regions by the inherent feature of each in order to increase the detection accuracy. We will present a study on dividing the cast shadow region into three distinct sub regions, and then separately locate them through their gray level and color features. For gray level detection, we calculate the distribution of gray level reduction rate compared to...
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