轮胎纹理分层的Gabor滤波器设计

轮胎多层帘线的每一个排列的不同取向构成了X线的分层纹理图像。轮胎帘线的空间排列具有准周期性,排列的取向和空间距离造成了谱图上楔特征和环特征的极大值。根据这些特点,提出了一种方向Gabor滤波器参数的自动选取方法。根据楔特征人工指定纹理的大致方向,算法将环特征映射到Gabor滤波器的尺度参数,并按能量收敛原则搜索最好的尺度和纹理的准确方向。最后给出的实验结果说明,该算法可以有效地提取X线轮胎图像的各层纹理。

An Algorithm of Designing Gabor Filters for Getting Every Texture Layer of Multi-layers Texture Tyre Image

An algorithm is presented for designing directional gabor filters for getting every texture layer of multi-layers texture tyre image,which is formed when X-rays scan the different direction array of tyre hanging-lines.Having the features of the pseudo periodicity and different directions,the space arrays and array direction of hanging-lines separately relate the maximums of ring features and wedge feature of Fourier coefficient.The wedge feature maximum of Fourier coefficient gives the direction of every texture layer of X-ray tyre image;the algorithm will map the ring feature maximum of Fourier coefficient to the scale parameter of gabor filter,and then automatically search the refined scale and accurately direction parameters in the guide line of energy convergence.Finally,the experiment results show the algorithm is highly efficient to extract every layer texture of X-ray tyre image.