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According to the tensor diffusion theory, this paper proposes a novel active contour model for image segmentation in the level set formulation. Firstly, we define an external energy term using the trace-based tensor diffusion equation, which can locate the evolution curve to the neighborhood of one target boundaries adaptively. So it will enhance the robustness of the model to the initialization of...
In this paper, we propose an improved fuzzy enhancement algorithm for the moving object detection and tracking. A new membership function is proposed based on the theory of fuzzy sets, which improves the traditional Pal-King fuzzy enhancement algorithm and overcomes the loss of gray information after the processing of enhancement. Since a gray image with multiple targets need more than one crossover...
Video-based smoke detection requires suspected smoke regions to be segmented from the complex background in the initial stage of detection. This segmentation is also important to the subsequent processes of detection. This paper proposes a novel method of segmenting a smoke region in smoke pixel classification based on saliency detection. A salient smoke detection model based on color and motion features...
Segmentation of video objects from background is a popular computer vision topic and has many important applications. Most existing methods are either computationally expensive or requiring manual initialization, static cameras, and/or rigid scenes. In a previous work, we proposed a joint spatio-temporal linear regression algorithm to automatically cluster the sparse edge/corner pixels in each video...
Semantic video content extraction and selection are critical steps in sports video analysis and editing. The identification of video segments can be from various semantic perspectives, e.g. certain event, player or emotional state. In this paper, we examined the possibility of automatically identifying shots with "happy" or "sad" emotion from broadcast sports video. Our proposed...
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