对输入图像进行预处理后提取目标轮廓，经过归一化处理得到目标形 状的平移、尺度不变的链状表达，再通过小波变换进行多尺度分析；引入Zernike 矩，利用Zernike 矩的特性，实现小波表达的旋转不变性，解决了小波变换对起始点的依赖。-right to import images from pretreatment profile targets, after processing to be a target shape translation, The scale-invariant

对2维图像进行小波变换，滤除图像中的噪声，提取轮廓信息。-Wavelet transform is carried out for 2 dimensional image, and the noise of the image is filtered, and the contour information is extracted..