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Geodesic active contours for supervised texture segmentation

机译:测地线活动轮廓用于有监督的纹理分割

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This paper presents a variational method for supervised texture segmentation which is based on ideas coming from the curve propagation theory. We assume that a preferable texture pattern is known (e.g., the pattern that we want to distinguish from the rest of the image). The textured feature space is generated by filtering the input and the preferable pattern image using Gabor filters, and analyzing their responses as multi-component conditional probability density functions. The texture segmentation is obtained by minimizing a Geodesic Active Contour Model objective function where the boundary-based information is expressed via discontinuities on the statistical space associated with the multi-modal textured feature space. This function is minimized using a gradient descent method where the obtained PDE is implemented using a level set approach, that handles naturally the topological changes. Finally a fast method is used for the level set implementation. The performance of our method is demonstrated on a variety of synthetic and real textured images.
机译:本文提出了一种基于曲线传播理论的变分监督纹理分割方法。我们假设已知一种较好的纹理图案(例如,我们要与图像其余部分区分开的图案)。通过使用Gabor滤波器对输入图像和首选图案图像进行滤波,并将它们的响应作为多分量条件概率密度函数进行分析,可以生成纹理化特征空间。通过最小化测地线活动轮廓模型目标函数来获得纹理分割,其中基于边界的信息是通过与多峰纹理特征空间关联的统计空间上的不连续性来表示的。使用梯度下降法可最大程度地减小此功能,其中使用水平集方法实现获得的PDE,该方法可以自然地处理拓扑变化。最后,将一种快速方法用于水平集实现。我们的方法的性能在各种合成和真实纹理图像上得到了证明。

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