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Active appearance model (AAM) has been successfully applied to register many types of deformable objects in images. However, the high dimension of intensity used in AAM usually leads to an expensive storage and computational cost. Moreover, intensity values cannot provide enough information for image alignment. In this paper, we propose a new AAM method based on Gabor texture feature representation...
The descriptive capability of color images for a scene is better than that of grayscale images. Traditional registration methods to register color images convert them to grayscale ones, in which the registration precision is decreased due to the loss of color information. By extending some properties of the discrete Fourier transform to the quaternion domain, a discrete-quaternion-Fourier-transform-based...
A new matching metric-Cauchy-Schwarz divergence of corners (Corner Cauchy-Schwarz Divergence, CCSD) is defined, and a new approach for image registration based on CCSD and sub-pixel localization is proposed. Firstly corners in an image are detected by multi-scale Harris operator, which are taken as initial interest points. And then sub-pixel localization technique is applied to determine the location...
In this paper, a improved algorithm based on convex hull vertices is proposed. After extracting feature points by Harris corner detector, for searching the same regions of reference images, correlation method is used to match these points firstly, which gains two initial pairing sets. Then convex hull vertices of the pairing sets are used to establish the transformation parameters that can match most...
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