Conv2在opencv中

Question

我正在进行图像处理,需要在c ++ OpenCV中知道相当于matlab的conv2.
我找到了这个链接,但它不符合我的要求.

我面临的问题是我需要用2-D双数组卷积Mat图像,这不是上面链接中给出的情况.

matlab代码是:

img = conv2(img1,Mx,'same')

哪里

Mx = {  
  {0, 0, 0, 0, 0, 0} ,   
  {0, -0.0003, -0.0035, 0, 0.0035, 0.0003} ,   
  {0, -0.0090, -0.0903, 0, 0.0903, 0.0090} , 
  {0, -0.0229, -0.2292, 0, 0.2292, 0.0229} ,   
  {0, -0.0090, -0.0903, 0, 0.0903, 0.0090} ,   
  {0, -0.0003, -0.0035, 0, 0.0035, 0.0003}  
};

谢谢.

Answer 1

解

使用OpenCV的filter2D功能.

代码示例

//initializes matrix
cv::Mat mat = cv::Mat::ones(50, 50, CV_32F); 

//initializes kernel
float  Mx[36] = { 0, 0, 0, 0, 0, 0 ,
     0, -0.0003, -0.0035, 0, 0.0035, 0.0003  ,
     0, -0.0090, -0.0903, 0, 0.0903, 0.0090  ,
     0, -0.0229, -0.2292, 0, 0.2292, 0.0229  ,
     0, -0.0090, -0.0903, 0, 0.0903, 0.0090  ,
     0, -0.0003, -0.0035, 0, 0.0035, 0.0003 
};
cv::Mat kernel(6, 6, CV_32F, Mx);

//convolove
cv::Mat dst;
cv::filter2D(mat, dst, mat.depth(), kernel);