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Get average frame sequence value

I want to calculate the average value of a sequence of frames by adding them, and then divide by the total number of frames. The problem is that I cannot access the pixels of the image. I used this code.

for(i = 1; i <= N; i++){
 image = imread(fileName.c_str(),0);
 Mat Mean = Mat::zeros(width, height,image.type());
        for(w = 0; w < image.rows ; w++)
           for(h = 0; h < image.cols ; h++)
               Mean.row(w).col(h) += (image.at<unsigned float>(w,h) / N);
         }

I always have an error confirming the statement. I also tried:

(float)image.at<uchar>(w,h)

image.row(w).col(h)[0]

image.row(w).col(h).val[0]

but in vain.

Here is the working code ... but I can not display the final result because it floats.

Mat Mean   = Mat::zeros(width, height,CV_32F); 
for(i = 1; i <= framesToLearn ; i++){
        image = imread(fileName.c_str(),0);
        accumulate(image, Mean);
    }
    Mean = Mean /framesToLearn;
    imshow("mean",Mean);
    waitKey(0);
+4
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2 answers

Perhaps try a different approach cv::accumulate::

cv::Mat avgImg;
avgImg.create(width, height,CV_32FC3);

for(i = 1; i <= N; i++){
  image = imread(fileName.c_str(),0);
  cv::accumulate(image, avgImg);
}

avgImg = avgImg / N;

: , CV_8U , :

Mat Mean   = Mat::zeros(width, height,CV_32F); 
 for(i = 1; i <= framesToLearn ; i++){
      image = imread(fileName.c_str(),0);
      accumulate(image, Mean);
    }
 Mean = Mean /framesToLearn;
 Mean.convertTo(Mean,CV_8U);
 imshow("mean",Mean);
 waitKey(0);
+4

, :

Mat Mean = Mat::zeros(width, height,CV_32F);
for(i=0; i<N; i++) {
    Mean += imread(fileName.c_str(),0);
}
Mean /= N;

, , :

image.at(, );

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