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Most visual based obstacle detection methods usually detect obstacles on the whole image, which are influenced by complex background and various illuminations. This paper proposes a novel and simple obstacle detection method DLP based on analyzing Distortion of Laser Pattern. To reduce computation, a laser pattern with two cross lines is used to project onto the front ground. Firstly, a segmentation...
Combining multiple kinds of features is useful to achieve the state of the art performance for human detection. But combining more features will result in high dimensional feature descriptors, which is time-consuming for feature extraction and detection. How to exploit different kinds of features and reduce the dimension of feature descriptor are challenging problems. A novel multi-feature descriptor...
In this paper, a novel method for accurate and real-time lip contour extraction in gray-level images is presented. The main idea is to grow the contour from some key points based on constraints of parabola fitting and gradient maximum which are combined using D-S theory. This approach can accurately extract continuous lip contour by simultaneously taking color and shape information into consideration,...
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