"基于四元数卷积的彩色图像边缘检测"一文的matlab源代码，很有帮助-matlab source code of "Colour image edge detector based on quaternion convolution" Electronics Letters, 34(10), May 14 1998, 969-971

Edge detection of colour image based on quaternion fractional differential

通过四元数和SOF对焊接的图像进行训练，从而使焊接的图形的边缘被保留，可以实现彩色图像的边缘提取-By quaternion and SOF welding training images, so that the weld edges are retained graphics, can achieve a color image edge detection