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This paper presents a local feature descriptor based rapid 3D ear recognition method. A coarse-to-fine pose alignment method is proposed to alleviate local extremum problem of ICP algorithm. At first, the LSP descriptors of 3D ear feature points are used to perform coarse pose alignment. Then the improved ICP algorithm (MICP algorithm) is used for fine pose alignment. Three kinds of descriptors, including...
This paper proposes a multiscale 3D keypoint detection method based on local weighted dissimilarity measure. At first, compute the local weighted dissimilarity measure of each vertex at different scale. Then determine the detecting scale of each vertex. Finally compare the local weighted dissimilarity measure of each vertex with those of its neighboring surface points at its detecting scale. The keypoint...
Low voltage Ride through (LVRT) capability has become more and more an issue for newly integrated wind turbines. To the best of our knowledge, this paper is the first to develop field tests for real wind turbines on Northeast China wind farms. It is therefore different from other papers that validate LVRT control strategies through running software simulations on a computer. To examine a single wind...
This paper proposes a novel ear recognition approach based on 3D keypoint matching. At first, the 3D keypoints are detected using the shape index image and the scale space theory. Then two principal orientations are assigned and the normalized local range image is obtained, which can provide invariance to 3D rotation and transformation for the following local descriptor construction. Finally, we construct...
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