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An effective approach to extracting geometric information of scenes from a single uncalibrated image is presented in this paper. Without any prior knowledge of the camera, we describe how to employ cross ratio to compute the length of a line segment on plane surface, while only the length(s) of the certain segment(s) is/are known. Real images of indoor and outdoor scene tests validate our approach.
The one class classification problem aims to distinguish a target class from outliers. Two popular algorithms, one-class SVM (OCSVM) and single-class MPM (SCMPM), solve this problem by finding a hyperplane with the maximum distance to the origin. Their essential difference is that OCSVM focuses on the support vectors (SV) in a local manner while SCMPM emphasizes the whole datapsilas distribution using...
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