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OpenCVで顔識別して、顔エリアのサイズの絵を描いてマスクする。
Face identification and character mask.
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; cv::Size cap_size; cv::VideoCapture cap; cv::Mat frame; ofImage image; ofFbo fbo; ofTrueTypeFont font; cv::CascadeClassifier face_cascade; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(0); this->cap_size = cv::Size(1280, 720); this->cap.open(0); this->cap.set(cv::CAP_PROP_FPS, 30); this->cap.set(cv::CAP_PROP_FRAME_WIDTH, this->cap_size.width); this->cap.set(cv::CAP_PROP_FRAME_HEIGHT, this->cap_size.height); this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR); this->frame = cv::Mat(cv::Size(this->image.getWidth(), this->image.getHeight()), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0); this->face_cascade.load("D:\\opencv_4.1.2\\build\\install\\etc\\haarcascades\\haarcascade_frontalface_alt2.xml"); this->fbo.allocate(this->cap_size.width, this->cap_size.height); this->font.loadFont("fonts/Kazesawa-Bold.ttf", 15, true, true, true); } //-------------------------------------------------------------- void ofApp::update() { this->cap >> this->frame; cv::cvtColor(this->frame, this->frame, cv::COLOR_BGR2RGB); cv::flip(this->frame, this->frame, 1); this->image.update(); cv::Mat gray_frame, small_frame; cv::cvtColor(this->frame, gray_frame, cv::COLOR_RGB2GRAY); cv::resize(gray_frame, small_frame, cv::Size(this->cap_size.width * 0.5, this->cap_size.height * 0.5)); vector<cv::Rect> faces; this->face_cascade.detectMultiScale(small_frame, faces); int face_count = 0; glm::vec2 face_location, face_size; float max_area = 0.f; for (cv::Rect r : faces) { auto tmp_face_location = glm::vec2(r.x * 2.f, r.y * 2.f); auto tmp_face_size = glm::vec2(r.width * 2, r.height * 2); auto area = tmp_face_size.x * tmp_face_size.y; if (area > max_area) { face_location = tmp_face_location; face_size = tmp_face_size; } } this->fbo.begin(); ofClear(0); for (int x = face_location.x; x < face_location.x + face_size.x; x += 15) { for (int y = face_location.y; y < face_location.y + face_size.y; y += 15) { char moji = ofMap(ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.05), 0, 1, '0', 'z'); this->font.drawString(string{ moji }, x, y); } } ofDrawRectangle(0, 0, this->fbo.getWidth(), face_location.y); ofDrawRectangle(0, 0, face_location.x, this->fbo.getHeight()); ofDrawRectangle(0, face_location.y + face_size.y, this->fbo.getWidth(), this->fbo.getHeight()); ofDrawRectangle(face_location.x + face_size.x, 0, this->fbo.getWidth(), this->fbo.getHeight()); this->fbo.end(); this->image.getTextureReference().setAlphaMask(this->fbo.getTexture()); } //-------------------------------------------------------------- void ofApp::draw() { this->image.draw(0, 0); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(1280, 720, OF_WINDOW); ofRunApp(new ofApp()); } |