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To estimate high dense crowd density, an improved gravitational edge detection approach is proposed. First, the background noises are removed from original images. Second, the gravitational edge detection method is applied to obtain the gray edge image, and based on the histogram, the binary edge image can be got automatically. Finally, the length of edge and the number of grid in the edge image are...
Iris recognition is of great significance in biometric technologies, due to the highest reliability and accuracy. As the first crucial step of iris recognition, iris segmentation is continuously and widely studied. A novel iris location method, based on rotation average analysis of intensity-inversed image, is presented here for iris segmentation: First, it locates the pupil by checking the consecutive...
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