首页> 外文会议>Conference on Storage and Retrieval for Media Databases 2001 Jan 24-26, 2001, San Jose, USA >SHAPE MATCHING OF PARTIALLY OCCLUDED OBJECTS FOR IMAGE RETRIEVAL USING HIERARCHICAL CONTENT DESCRIPTION
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SHAPE MATCHING OF PARTIALLY OCCLUDED OBJECTS FOR IMAGE RETRIEVAL USING HIERARCHICAL CONTENT DESCRIPTION

机译:使用分级内容描述进行图像匹配的部分被遮挡对象的形状匹配

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摘要

This paper proposes a new contour based shape matching approach capable of recognizing partially occluded objects in images. There are two major steps in the recognition process of partially occluded objects: 1) feature extraction, and 2) similarity matching. The features for a candidate image region are the contour points with maximum local curvature. A B-Spline fitting technique is used to smooth the region contour for better accuracy in curvature estimation. To determine the similarity between a candidate region and an object template, we compute the Hausdorff distance from the contour of the candidate image region to that of the template, where the region contour has been mapped into the template domain. Once a match is established, the information is retained using a hierarchical content description scheme, enabling expedient object based image retrieval at a later time.
机译:本文提出了一种新的基于轮廓的形状匹配方法,该方法能够识别图像中部分被遮挡的物体。在部分遮挡的物体的识别过程中,有两个主要步骤:1)特征提取和2)相似度匹配。候选图像区域的特征是具有最大局部曲率的轮廓点。 B样条拟合技术用于平滑区域轮廓,以提高曲率估计的准确性。为了确定候选区域和对象模板之间的相似性,我们计算了从候选图像区域的轮廓到模板的轮廓之间的Hausdorff距离,其中区域轮廓已映射到模板域中。建立匹配后,将使用分层内容描述方案保留信息,从而在以后的时间基于对象的方便图像检索。

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