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Region segmentation is the key procedure in various text related image processing tasks. A good region extractor, which separates text area from complex background clutter, will reduce the burden of subsequent text grouping and post-processing functions. This paper propose a character region segmentation method based on a new concept named Stroke Stable Region (SSR) to achieve a better precision than...
This paper presents a method for image perspective correction using camera intrinsic parameters. This method is based on two assumptions: a) the taken picture have a rectangle area, but didn't know the rectangle area's aspect ratio; b) the camera's intrinsic parameters should obtain by picture (Intrinsic parameters can easily obtain in iPhone or Android phone). The rectangle's perspective distortion...
The segmentation of touching characters is still a challenging problem in offline Chinese handwriting recognition. One feasible solution is through the over-segmentation strategy which maintains a high recall of correct cuts between adjacent characters and a moderate level of redundant cuts within a single character. Previous redundant cut filtering methods rely on either pure heuristics or learned...
The analysis of high resolution (6m) radar data was carried out on the Antarctic sea ice segmentation. This paper presented two methods for Synthetic Aperture Radar (SAR) sea ice image segmentation: k-means clustering method and threshold value method (binary). First, the speckle noise in SAR image was filtered and segmented by two methods. Then the results were compared. It was found that both methods...
Due to the ubiquity of web browsers and the dramatic development of dynamic web pages, web applications become the most popular computing model for providing services over the Internet. Unfortunately, this type of systems is vulnerable to the attacks issued by automated programs. CAPTCHA, a challenge-response test, is the most widely used mechanism to protect web application systems from attacks issued...
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