基于正交矩的纹理分割

在识别一幅图像中的界面或物体时，一般先要进行纹理分割．本提出了基于勒让得矩的纹理分割方法．首先在图像的小窗口中计算矩值，然后用一个非线性转换器把它转化成纹理特征．再用这些特征组成特征向量作为输入数据．接着采用RBF人工神经网络对提取的特征进行分割．用k均值算法训练RBF人工神经网络的隐层．输出层的训练是采用基于LMS的监督式数学模型．该算法成功地分割了许多灰度级图像．和基于几何矩的纹理分割相比，用正交矩可以降低分割错误率．

Orthogonal moment based texture segmentation

Texture segmentation is a necessary step to identify the surface or an object in an image. We present a Legendre moment based segmentation algorithm. The Legendre moments in small local windows of the image are computed first and a nonlinear transducer is used to map the moments to texture features and these features are used to construct feature vectors used as input data. Then an RBF neural network is used to perform segmentation. A k-mean algorithm is used to train the hidden layers of the RBF neural network. The training of the output layer is the supervised algorithm based on LMS. The algorithm has been successfully used to segment a number of gray level texture images. Compared with the geometric moment-based texture segmentation, we can reduce the error rates using orthogonal moments.