中文说明：
基于PCNN的特征提取,PCNN用于特征提取时，具体平移、旋转、尺度、扭曲等不变性，这正是许多年来基于内容的图像检索系统追求的目标，同时PCNN用于特征提取时，有很好的抗噪性。而且PCNN直接来自于哺乳动物视觉皮层神经的研究，具有提取图像形状，纹理，边缘的属性。用PCNN能很好地对图像进行签名，将二维的图像的特征提取成一维矢量签名。
English Description：
Feature extraction, based on PCNN PCNN is used for feature extraction, the specific translation, rotation, scaling, distortion and other invariance, content-based image retrieval system for many years in pursuit of the goal, PCNN is used for feature extraction at the same time, has good noise resistance.And PCNN directly from mammalian visual cortex nerve research, extract the image shape, texture, the edge of the property.With PCNN can well for signature, the 2 d image feature extraction into a one dimensional vector signature.