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首页> 外文期刊>IEEE Transactions on Circuits and Systems for Video Technology >Multiscale Corner Detection of Gray Level Images Based on Log-Gabor Wavelet Transform
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Multiscale Corner Detection of Gray Level Images Based on Log-Gabor Wavelet Transform

机译:基于Log-Gabor小波变换的灰度图像多尺度角点检测

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摘要

This paper presents two novel corner detection methods for gray level images based on log-Gabor wavelet transform. The input image is decomposed at multiscales and along multi-orientations. In the first algorithm, the magnitude along the direction that is orthogonal to the gradient orientation represents the “cornerness” measurement. Using this detector, corners are detected and localized accurately. Meanwhile, this method provides us the magnitudes and orientations along the principal axes corresponding to the directions of the local eigenvectors of the local changes. This information is useful when we deal with the affine transform applications in matching problems.
机译:本文提出了两种基于log-Gabor小波变换的灰度图像角点检测新方法。输入图像以多尺度和多方向分解。在第一种算法中,沿与梯度方向正交的方向的大小表示“角”测量。使用此检测器,可以准确检测角点并进行定位。同时,该方法为我们提供了沿着主轴的幅度和方向,这些幅度和方向与局部变化的局部特征向量的方向相对应。当我们在匹配问题中处理仿射变换应用程序时,此信息很有用。

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