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基于SURF算法的双目视觉特征点定位研究 被引量:2
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作者 王永锋 石超 +1 位作者 徐子锋 陈龙 《软件工程》 2019年第3期5-8,共4页
针对双目视觉立体图像特征点匹配质量不好导致定位精度低的问题,本文提出改进SURF匹配的特征点定位方法。在改进的SURF匹配算法中,采用双向匹配、NNDR约束、对称性约束、极线约束和交叉匹配约束的方法,提高了图像特征点匹配的质量。在... 针对双目视觉立体图像特征点匹配质量不好导致定位精度低的问题,本文提出改进SURF匹配的特征点定位方法。在改进的SURF匹配算法中,采用双向匹配、NNDR约束、对称性约束、极线约束和交叉匹配约束的方法,提高了图像特征点匹配的质量。在双目视觉特征点定位中,采用公垂线段中点法具有更高的特征点定位精度。实验证明,该算法的特征点定位精度更高,同时可以达到实时三维重建效率。 展开更多
关键词 特征点重建 SURF算法 双目视觉 最小二乘法 公垂线段中
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Patch-guided facial image inpainting by shape propagation
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作者 Yue-ting ZHUANG Yu-shun WANG +1 位作者 Timothy K. SHIH Nick C. TANG 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2009年第2期232-238,共7页
Images with human faces comprise an essential part in the imaging realm. Occlusion or damage in facial portions will bring a remarkable discomfort and information loss. We propose an algorithm that can repair occluded... Images with human faces comprise an essential part in the imaging realm. Occlusion or damage in facial portions will bring a remarkable discomfort and information loss. We propose an algorithm that can repair occluded or damaged facial images automatically, named ‘facial image inpainting'. Inpainting is a set of image processing methods to recover missing image portions. We extend the image inpainting methods by introducing facial domain knowledge. With the support of a face database, our approach propagates structural information, i.e., feature points and edge maps, from similar faces to the missing facial regions. Using the interred structural information as guidance, an exemplar-based image inpainting algorithm is employed to copy patches in the same face from the source portion to the missing portion. This newly proposed concept of facial image inpainting outperforms the traditional inpainting methods by propagating the facial shapes from a face database, and avoids the problem of variations in imaging conditions from different images by inferring colors and textures from the same face image. Our system produces seamless faces that are hardly seen drawbacks. 展开更多
关键词 Image inpainting Face reconstruction Feature point extraction
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