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OpenCVで顔検出して、そこだけ分裂
Face detection and image split.
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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) {}; cv::VideoCapture cap; cv::Size cap_size; cv::Mat frame; cv::CascadeClassifier face_cascade; ofEasyCam cam; ofMesh mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(255); ofSetColor(255); ofEnableDepthTest(); 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->face_cascade.load("D:\\opencv_4.1.2\\build\\install\\etc\\haarcascades\\haarcascade_frontalface_alt2.xml"); } //-------------------------------------------------------------- void ofApp::update() { this->cap >> this->frame; cv::flip(this->frame, this->frame, 1); cv::cvtColor(this->frame, this->frame, cv::COLOR_BGR2RGB); 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 = r.width * r.height; if (area > max_area) { face_location = tmp_face_location; face_size = tmp_face_size; } } this->mesh.clear(); int span = 1; for (int x = 0; x < this->frame.cols; x += span) { float param_y = 0; if (face_location.x < x && x < face_location.x + face_size.x) { param_y = ofMap(ofNoise((x / 20) * 20, ofGetFrameNum() * 0.05), 0, 1, -100, 100); } for (int y = 0; y < this->frame.rows; y += span) { glm::vec3 vertex = glm::vec3(x, y + param_y, 0) - glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * 0.5, 0); cv::Vec3b tmp = this->frame.at<cv::Vec3b>(y, x); auto color = ofColor(tmp[0], tmp[1], tmp[2]); this->mesh.addVertex(vertex); this->mesh.addColor(ofColor(0.299 * color.r + 0.587 * color.g + 0.114 * color.b)); } } int cols = this->frame.rows / span; int rows = this->frame.cols / span; for (int col = 1; col < cols; col++) { for (int row = 1; row < rows; row++) { this->mesh.addIndex(col + row * cols); this->mesh.addIndex((col - 1) + (row - 1) * cols); this->mesh.addIndex((col - 1) + row * cols); this->mesh.addIndex(col + row * cols); this->mesh.addIndex((col - 1) + (row - 1) * cols); this->mesh.addIndex(col + (row - 1) * cols); } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(180); this->mesh.draw(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(1280, 720, OF_WINDOW); ofRunApp(new ofApp()); } |