将vec3b转换成mat

问题描述

我在 im 中有彩色图像，我想使用以下代码使用vec3b获取3通道图像的像素值

  for（int i = 0; i  {
 for（int j = 0; j  {
 for（int k = 0; k  {
 zay [k] = im.at< Vec3b& ，j）[k]; //获取像素值并赋值给新的vec3b变量zay 
 
 
} 
 
} 
 
} 
  
 
 
 
之后，我想将以下mat 3x3过滤器乘以zay中的vec3b 
  Filter =（Mat_< double>（3,3）<  0，1,0，
 0，0，0）; 
  
如何将vec3b转换为mat矩阵，而vec3b是一个数组3x1？ 
感谢
解决方案
未尝试但应该工作：
  cv :: Mat DoubleMatFromVec3b（cv :: Vec3b in）
 {
 cv :: Mat mat（3,1，CV_64FC1）; 
 mat.at< double>（0,0）= in [0]; 
 mat.at< double>（1,0）= in [1]; 
 mat.at< double>（2,0）= in [2]; 
 
 return mat; 
}; 
  
 
I have color image in im, i want to get the pixel value of 3 channels image using vec3b using the following code
    for (int i = 0; i < im.rows; i++)
{
    for (int j = 0; j < im.cols; j++)
    {
        for (int k = 0; k < nChannels; k++)
        {
            zay[k] = im.at<Vec3b>(i, j)[k]; //get the pixel value and assign to new vec3b variable zay


        }

    }

}
After that, i want to multiply the following mat 3x3 filter with that vec3b in zay
    Filter= (Mat_<double>(3, 3) << 0, 0, 0,
                                0, 1, 0,
                                0, 0, 0);
How to convert vec3b into mat matrix so i can multiplied with mat Filter?? And vec3b is an array 3x1?Thanks
 解决方案 
Didnt try but should work:
cv::Mat DoubleMatFromVec3b(cv::Vec3b in)
{
    cv::Mat mat(3,1, CV_64FC1);
    mat.at <double>(0,0) = in [0];
    mat.at <double>(1,0) = in [1];
    mat.at <double>(2,0) = in [2];

    return mat;
};
                        
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