samples/cpp/tutorial_code/imgcodecs/animations.cpp

cv::imreadanimation および cv::imwriteanimation 関数の使用例。詳細は対応するチュートリアルを参照

#include <opencv2/highgui.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/imgproc.hpp>
#include <iostream>
 
using namespace cv;
 
int main( int argc, const char** argv )
{
    std::string filename = argc > 1 ? argv[1] : "animated_image.webp";
 
 if (argc == 1)
    {
 Animation animation_to_save;
 Mat image(128, 256, CV_8UC4, Scalar(150, 150, 150, 255));
 int duration = 200;
 
 for (int i = 0; i < 10; ++i) {
            animation_to_save.frames.push_back(image.clone());
            putText(animation_to_save.frames[i], format("Frame %d", i), Point(30, 80), FONT_HERSHEY_SIMPLEX, 1.5, Scalar(255, 100, 0, 255), 2);
            animation_to_save.durations.push_back(duration);
        }
        imwriteanimation("animated_image.webp", animation_to_save, { IMWRITE_WEBP_QUALITY, 100 });
    }
 
 Animation animation;
 
 bool success = imreadanimation(filename, animation);
 if (!success) {
        std::cerr << "Failed to load animation frames\n";
 return -1;
    }
 
 while (true)
 for (size_t i = 0; i < animation.frames.size(); ++i) {
        imshow("Animation", animation.frames[i]);
 int key_code = waitKey(animation.durations[i]); // Delay between frames
 if (key_code == 27)
            exit(0);
    }
 
 return 0;
}