histogram.cpp
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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html
#include <opencv2/imgproc.hpp>
#include <opencv2/imgcodecs.hpp>
#include <cstdint>
#include <array>
#include <iostream>
#include "raw_pixels.hpp"
#define IMG_ROWS 100
#define IMG_COLS 100
static_assert(IMG_ROWS * IMG_COLS <= RAW_PIXELS_SIZE, "Incompatible size");
int main(void)
{
// Number of experiment runs
int no_runs = 2;
// https://docs.opencv.org/master/d3/d63/classcv_1_1Mat.html
cv::Mat src_new(IMG_ROWS, IMG_COLS, CV_8UC1, (void *)raw_pixels);
// Set parameters
int imgCount = 1;
const int channels[] = {0};
cv::Mat mask = cv::Mat();
cv::Mat hist;
int dims = 1;
const int hist_sizes[] = {256};
float Range[] = {0,256};
const float *ranges[] = {Range};
// Run calc Hist
for(int i=0; i < no_runs; i++){
std::cout << "Running iteration # "<< i << std::endl;
cv::calcHist(&src_new, imgCount, channels, mask, hist, dims, hist_sizes, ranges);
}
return 0;
}