提取人体手臂肌电信号，手势识别，包括肌电信号的预处理，端点检测，特征提取，特征降维，SVM分类识别-sEMG based hand movements recognition using SVM

提取自然图像的区域特征，先是对图像进行下采样进行降维，然后彩色图像三通道对每一个通道进行提取颜色信息。-The regional feature of the natural image is extracted, and the image is down-sampled, and then the color image is extracted for each channel.