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OpenCVでフレーム間の差分を計算して、閾値を超えた箇所だけ位置をずらして描写する。
位置情報を引数にofNoise()で計算した座標量に、0から1の値を掛けて調整する。
OpenCV calculates the difference between frames and shifts the position of the image only when the threshold is exceeded.
The position information is used as an argument, and the amount of coordinates calculated by ofNoise() is adjusted by multiplying by a value between 0 and 1.
[ Source ]
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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; int number_of_frames; vector<cv::Mat> frame_list; float rect_size; vector<float> gap_list; vector<cv::Mat> rect_frame_list; vector<unique_ptr<ofImage>> rect_image_list; vector<cv::Rect> cv_rect_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); ofDisableArbTex(); this->cap_size = cv::Size(640, 360); this->rect_size = 10; 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_image_list.push_back(move(image)); this->cv_rect_list.push_back(rect); this->rect_frame_list.push_back(frame); this->gap_list.push_back(this->rect_size); } } auto file_path = "D:\\MP4\\Pexels Videos 2880.mp4"; this->cap.open(file_path); this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT); for (int i = 0; i < this->number_of_frames; i++) { cv::Mat src, tmp; this->cap >> src; if (src.empty()) { continue; } cv::resize(src, tmp, this->cap_size); cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB); this->frame_list.push_back(tmp); } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); int frame_index = (int)(ofGetFrameNum() * 0.42) % this->number_of_frames; int next_frame_index = (frame_index + 1) % this->number_of_frames; for (int i = 0; i < this->gap_list.size(); i++) { this->gap_list[i] = this->gap_list[i] <= 0 ? 0 : this->gap_list[i] - 0.1; } if (frame_index < next_frame_index) { cv::Mat gap = this->frame_list[frame_index] - this->frame_list[next_frame_index]; for (int i = 0; i < this->cv_rect_list.size(); i++) { int x = this->cv_rect_list[i].x + this->rect_size * 0.5; int y = this->cv_rect_list[i].y + this->rect_size * 0.5; cv::Vec3b* gap_value = gap.ptr<cv::Vec3b>(y, 0); cv::Vec3b* color_value = this->frame_list[frame_index].ptr<cv::Vec3b>(y, 0); cv::Vec3b gv = gap_value[x]; cv::Vec3b cv = color_value[x]; if ((gv[0] + gv[1] + gv[2]) > 50) { this->gap_list[i] = 1; } } } } //-------------------------------------------------------------- void ofApp::draw() { int frame_index = (int)(ofGetFrameNum() * 0.42) % this->number_of_frames; this->cam.begin(); ofRotateX(180); for (int i = 0; i < this->rect_frame_list.size(); i++) { auto tremor = glm::vec3( ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, this->rect_size * -2.5, this->rect_size * 2.5) * this->gap_list[i], ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, this->rect_size * -2.5, this->rect_size * 2.5) * this->gap_list[i], ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, this->rect_size * -2.5, this->rect_size * 2.5) * this->gap_list[i]); ofPushMatrix(); ofTranslate(this->cv_rect_list[i].x + 50 - ofGetWidth() * 0.5 + tremor.x, this->cv_rect_list[i].y + 180 - ofGetHeight() * 0.5 + tremor.y, tremor.z); ofRotateX(180); cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rect_list[i]); tmp_box_image.copyTo(this->rect_frame_list[i]); ofFill(); ofSetColor(255); this->rect_image_list[i]->update(); this->rect_image_list[i]->getTexture().bind(); ofDrawBox(glm::vec3(), this->rect_size); this->rect_image_list[i]->unbind(); if (this->gap_list[i] > 0) { ofNoFill(); ofSetColor(0); ofDrawBox(glm::vec3(), this->rect_size); } ofPopMatrix(); } ofNoFill(); ofSetColor(39); ofDrawBox(glm::vec3(this->rect_size * 0.5, this->rect_size * -0.5, 0), 640, 360, this->rect_size); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
[ Link ]
https://github.com/junkiyoshi/Insta20210630
[ Kinako ]