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In the process of generating a surface model from point cloud data, a segmentation that extracts the edges and partitions the three-dimensional (3D) point data is necessary and plays an important role in fitting surface patches and applying the scan data to the manufacturing process. However, it is always difficult to extract the exact edge points because the scan data consist of discrete points and...
Sub-pixel accurate registration is the challenging aspect of super-resolution reconstruction. However, the blur contained in the low-resolution images will result in inaccurate registration and an unsatisfactory reconstruction result. Therefore, this paper introduces a blurred image sub-pixel registration method based on Non-Maxima Suppression (NMS). By analyzing the relationship between the image...
A novel approach is presented to extract the contour of an ROI (region of interest) in medical images and medical bar-code. It combines threshold segmentation method and SEL (sequential edge linking) algorithm. Threshold is obtained and used to binarilize the whole image. The binary image is processed by the SEL algorithm to extract the contour of an ROI. Experiments show that the proposed method...
A novel approach is presented to extract the contour of an ROI (region of interest) in medical images. It combines threshold segmentation method and SEL (sequential edge linking) algorithm. The salient area is located according to the human visual characteristics, and then the threshold is obtained and used to binarilize the whole image. The binary image is processed by the SEL algorithm to extract...
A novel approach is presented to extract the contour of a region of interest (ROI) in mammogram. It combines the threshold segmentation method and sequential edge linking (SEL) algorithm. The salient area is located according to human visual characteristics, and then the optimal threshold is obtained and applied to the whole image. The binary image is processed by the SEL algorithm. Experiments show...
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