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OpenCVのcv::MatとopenFrameworksのofImageを関連づける。
Associate OpenCV’s cv::Mat with openFrameworks’ ofImage.
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auto image = make_unique<ofImage>(); image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR); cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0); |
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#pragma once #include "ofMain.h" #include "opencv2/opencv.hpp" class ofApp : public ofBaseApp { public: void setup(); void update(); void draw(); void keyPressed(int key) {}; void keyReleased(int key) {}; void mouseMoved(int x, int y) {}; void mouseDragged(int x, int y, int button) {}; void mousePressed(int x, int y, int button) {}; void mouseReleased(int x, int y, int button) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofEasyCam cam; cv::VideoCapture cap; cv::Size cap_size; deque<cv::Mat> frame_list; int frame_list_count; float rect_size; vector<cv::Mat> rect_frames; vector<unique_ptr<ofImage>> rect_images; vector<cv::Rect> cv_rects; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(255); ofEnableDepthTest(); ofDisableArbTex(); this->frame_list_count = 60; this->cap.open("D:\\MP4\\production ID_4711774.mp4"); // Video URL https://www.pexels.com/video/video-of-streets-in-japan-during-daytime-4711774/ this->cap_size = cv::Size(640, 360); this->rect_size = 40; for (int x = 0; x < this->cap_size.width; x += this->rect_size) { for (int y = 0; y < this->cap_size.height; y += this->rect_size) { auto image = make_unique<ofImage>(); image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR); cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0); cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size); this->rect_images.push_back(move(image)); this->cv_rects.push_back(rect); this->rect_frames.push_back(frame); } } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); cv::Mat frame, resize; this->cap >> frame; if (frame.empty()) { this->cap.set(cv::CAP_PROP_POS_FRAMES, 0); return; } cv::cvtColor(frame, frame, cv::COLOR_BGR2RGB); cv::resize(frame, resize, this->cap_size); this->frame_list.push_front(resize); while (this->frame_list.size() > this->frame_list_count) { this->frame_list.pop_back(); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofTranslate(this->cap_size.width * -0.5 + this->rect_size * 0.5, this->cap_size.height * -0.5 - this->rect_size * 0.5, 0); for (int i = 0; i < this->rect_frames.size(); i++) { float noise_seed = ofRandom(1000); int frame_index = ofMap(ofNoise(noise_seed, this->cv_rects[i].x * 0.005, this->cv_rects[i].y * 0.005, ofGetFrameNum() * 0.01), 0, 1, 0, this->frame_list.size()); cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]); tmp_box_image.copyTo(this->rect_frames[i]); this->rect_images[i]->update(); this->rect_images[i]->getTexture().bind(); ofSetColor(255); ofFill(); ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5); this->rect_images[i]->unbind(); ofSetColor(39); ofNoFill(); ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5); } /* // 元動画と比べる時にはコメントを外す ofTranslate(0, this->cap_size.height * 1.2); for (int i = 0; i < this->rect_frames.size(); i++) { int frame_index = 0; cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]); tmp_box_image.copyTo(this->rect_frames[i]); this->rect_images[i]->update(); this->rect_images[i]->getTexture().bind(); ofSetColor(255); ofFill(); ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5); this->rect_images[i]->unbind(); ofSetColor(39); ofNoFill(); ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5); } */ this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
[ Link ]
https://github.com/junkiyoshi/Insta20210818
https://www.pexels.com/video/video-of-streets-in-japan-during-daytime-4711774/