匹配追踪和正交匹配追踪，基于互功率谱的时延估计，在MATLAB中求图像纹理特征。- Matching Pursuit and orthogonal matching pursuit, Based on the time delay estimation of power spectrum, In the MATLAB image texture feature.

粒子图像分割及匹配均为自行编制的子例程，利用自然梯度算法，在MATLAB中求图像纹理特征。- Particle image segmentation and matching subroutines themselves are prepared, Use of natural gradient algorithm, In the MATLAB image texture feature.