#include// OpenCV library using namespace cv; int main() { // Create a 3x3 matrix Mat A = Mat::ones(3, 3, CV_8UC1); // CV_8UC1 is a 8-bit single channel matrix // Calculate the sum of all elements in the matrix double total = cv::sum(A)[0]; std::cout << "Total value of matrix A: " << total << std::endl; return 0; }
#includeIn this example, we create a vector of integers and use the std::accumulate function from the standard library to calculate the sum of all elements in the vector. The initial value for the accumulation is set to 0. We then print the result to the console. Package/library: STL (Standard Template Library). In conclusion, the Mat total function is part of the OpenCV library and is used to calculate the sum of all elements in a matrix. It can be used for various applications such as averaging, normalization, or thresholding. Other packages/libraries such as the STL also provide functions to compute the sum of elements in vectors or arrays.#include #include int main() { // Create a vector of integers std::vector vec = { 1, 2, 3, 4, 5 }; // Calculate the sum of all elements in the vector int total = std::accumulate(vec.begin(), vec.end(), 0); std::cout << "Total value of vector: " << total << std::endl; return 0; }