期刊
COMPUTER GRAPHICS FORUM
卷 40, 期 1, 页码 180-194出版社
WILEY
DOI: 10.1111/cgf.14181
关键词
3D shape matching; modeling; curves and surfaces; modeling; computer vision – shape recognition; methods and applications
资金
- National Science Foundation [IIS-1619050]
- Office of Naval Research [N00014-17-1-2142]
This paper introduces a novel local surface feature descriptor ECHO derived from extended convolution, which outperforms popular surface descriptors in feature matching and shape correspondence experiments, particularly demonstrating stability and distinctiveness under near-isometric deformations and complex environments.
This paper presents a novel, highly distinctive and robust local surface feature descriptor. Our descriptor is predicated on a simple observation: instead of describing the points in the vicinity of a feature point relative to a reference frame at the feature point, all points in the region describe the feature point relative to their own frames. Isometry invariance is a byproduct of this construction. Our descriptor is derived relative to the extended convolution - a generalization of the standard convolution that allows the filter to adaptively transform as it passes over the domain. As such, we name our descriptor the Extended Convolution Histogram of Orientations (ECHO). It exhibits superior performance compared to popular surface descriptors in both feature matching and shape correspondence experiments. In particular, the ECHO descriptor is highly stable under near-isometric deformations and remains distinctive under significant levels of noise, tessellation, complex deformations and the kinds of interference commonly found in real data.
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