c++ - openCV 创建不同大小的 3D 矩阵

Question

据此 http://answers.opencv.org/question/15917/how-to-access-data-from-a-cvmat/ 我尝试创建一个 3D 矩阵

void AutomaticMacbethDetection::DrawMacbethROI(ColorCheckerBatchRGB ColorCheckerBatchRGB, int *** raw_frame,int _width, int _height,int colorOrder)
{  
    cv::Mat src;
    if (colorOrder == -1)
    {
        const int sizes[3]={_height,_width,3};
        src = cv::Mat::zeros(3, sizes, CV_32F);

    }else
    {
        const int sizes[3]={_height,_width,1};
        src = cv::Mat::zeros(3, sizes, CV_32F);
    }

    std::vector<float> channel;
    if (colorOrder == -1)
    {
        for (int w = 0; w < _width; w++)
        {               
            for (int h = 0; h < _height; h++)
            {
                float temp =raw_frame[h][w][0]; 
                channel.push_back(temp);
                src.at<float>(h,w,0) = temp;
                src.at<float>(h,w,1) = raw_frame[h][w][1];
                src.at<float>(h,w,2) = raw_frame[h][w][2];
            }               
        }   
    }
    else
    {
        for (int w = 0; w < _width; w++)
        {               
            for (int h = 0; h < _height; h++)
            {
                float temp =raw_frame[h][w][0]; 
                channel.push_back(temp);
                src.at<float>(h,w,0) = temp;
            }               
        }   
        float divider = Utilities::tprctile(channel,99.2);
        src = src/divider;
    }

    cv::imshow("test", src);
    cv::waitKey(0);

我的函数同时支持 RGB 和原始图像，因此我需要创建一个 100x100x1 矩阵或 100x100x3 矩阵，具体取决于图像类型。

但是我在 imshow() 中遇到异常

OpenCV Error: Assertion failed (p[-1] <= 2) in cv::Mat::MSize::operator (), file
 C:\buildslave64\win64_amdocl\2_4_PackSlave-win64-vc11-shared\opencv\modules\cor
e\include\opencv2/core/mat.hpp, line 712

你能解释一下问题是什么吗？

Answer 1

在我看来，您正在尝试在这两种情况下设置 3 层零垫:

const int sizes[3]={_height,_width,1};
src = cv::Mat::zeros(3, sizes, CV_32F);

C++:static MatExpr Mat::zeros(int ndims, const int* sz, int type) 指出第一个参数是维度。如果您想要一层垫子，这里应该为 1。