opencv – ページ 35 – プログラミング de 落描き

2018年6月21日2018年6月21日

動画を円化け openFrameworks

[ Video ]

[ About ]
OpenCVで取得した動画の色情報を、円に転写。それぞれの円をNoise関数でユラユラさせました

[ Source ]

#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::VideoCapture cap;
	cv::Mat cap_frame;
	ofImage cap_image;
	cv::Size cap_size;
};

#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::VideoCapture cap;

cv::Mat cap_frame;

ofImage cap_image;

cv::Size cap_size;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofSetLineWidth(3);

	this->cap.open("D:\\video\\image2.mp4");
	this->cap_size = cv::Size(1280, 720);
	this->cap_image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->cap_frame = cv::Mat(this->cap_image.getHeight(), this->cap_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->cap_image.getPixels().getNumChannels()), this->cap_image.getPixels().getData(), 0);
}

//--------------------------------------------------------------
void ofApp::update() {

	cv::Mat origin;
	this->cap >> origin;
	if (origin.empty()) {

		this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}

	cv::resize(origin, this->cap_frame, this->cap_size);
	cv::cvtColor(this->cap_frame, this->cap_frame, CV_BGR2RGB);
	
	this->cap_image.update();
}

//--------------------------------------------------------------
void ofApp::draw() {

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	for (int radius = 0; radius < 720; radius += 10) {

		float noise_value = ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.05), 0, 1, -60, 60);
		ofPushMatrix();
		ofRotate(noise_value);

		for (int deg = 0; deg < 360; deg++) {

			int x = radius * cos(deg * DEG_TO_RAD);
			int y = radius * sin(deg * DEG_TO_RAD);

			int x_index = x + this->cap_size.width * 0.5;
			int y_index = y + this->cap_size.height * 0.5;

			if (x_index < 0 || x_index >= this->cap_size.width || y_index < 0 || y_index >= this->cap_size.height) {

				continue;
			}

			ofColor color(this->cap_frame.at<cv::Vec3b>(y_index, x_index)[0], this->cap_frame.at<cv::Vec3b>(y_index, x_index)[1], this->cap_frame.at<cv::Vec3b>(y_index, x_index)[2]);
			ofSetColor(color);

			int next_x = radius * cos((deg + 1) * DEG_TO_RAD);
			int next_y = radius * sin((deg + 1) * DEG_TO_RAD);

			ofDrawLine(x, y, next_x, next_y);
		}

		ofPopMatrix();
	}
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofSetLineWidth(3);

this->cap.open("D:\\video\\image2.mp4");

this->cap_size = cv::Size(1280, 720);

this->cap_image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

this->cap_frame = cv::Mat(this->cap_image.getHeight(), this->cap_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->cap_image.getPixels().getNumChannels()), this->cap_image.getPixels().getData(), 0);

}

//--------------------------------------------------------------

void ofApp::update() {

cv::Mat origin;

this->cap >> origin;

if (origin.empty()) {

this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::resize(origin, this->cap_frame, this->cap_size);

cv::cvtColor(this->cap_frame, this->cap_frame, CV_BGR2RGB);

this->cap_image.update();

}

//--------------------------------------------------------------

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

for (int radius = 0; radius < 720; radius += 10) {

float noise_value = ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.05), 0, 1, -60, 60);

ofPushMatrix();

ofRotate(noise_value);

for (int deg = 0; deg < 360; deg++) {

int x = radius * cos(deg * DEG_TO_RAD);

int y = radius * sin(deg * DEG_TO_RAD);

int x_index = x + this->cap_size.width * 0.5;

int y_index = y + this->cap_size.height * 0.5;

if (x_index < 0 || x_index >= this->cap_size.width || y_index < 0 || y_index >= this->cap_size.height) {

continue;

}

ofColor color(this->cap_frame.at<cv::Vec3b>(y_index, x_index)[0], this->cap_frame.at<cv::Vec3b>(y_index, x_index)[1], this->cap_frame.at<cv::Vec3b>(y_index, x_index)[2]);

ofSetColor(color);

int next_x = radius * cos((deg + 1) * DEG_TO_RAD);

int next_y = radius * sin((deg + 1) * DEG_TO_RAD);

ofDrawLine(x, y, next_x, next_y);

}

ofPopMatrix();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180621

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2018年6月20日2018年6月20日

動画を文字化け openFrameworks

[ Video ]

[ About ]
OpenCVを使って動画を読み込み、ピクセル単位でアクセスして色情報を元に文字化しました。何も思いつかずにこねくり回してたらこんなんになりました

[ Source ]

#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) {};

	ofTrueTypeFont font;

	cv::VideoCapture cap;
	cv::Mat cap_frame;
	ofImage cap_image;
	cv::Size cap_size;
};

#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) {};

ofTrueTypeFont font;

cv::VideoCapture cap;

cv::Mat cap_frame;

ofImage cap_image;

cv::Size cap_size;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 15);
	
	this->cap.open("D:\\video\\image2.mp4");
	this->cap_size = cv::Size(1280, 720);
	this->cap_image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->cap_frame = cv::Mat(this->cap_image.getHeight(), this->cap_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->cap_image.getPixels().getNumChannels()), this->cap_image.getPixels().getData(), 0);
}

//--------------------------------------------------------------
void ofApp::update() {

	cv::Mat origin;
	this->cap >> origin;
	if (origin.empty()) {

		this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}

	cv::resize(origin, this->cap_frame, this->cap_size);
	cv::cvtColor(this->cap_frame, this->cap_frame, CV_BGR2RGB);
	
	this->cap_image.update();
}

//--------------------------------------------------------------
void ofApp::draw() {

	vector<string> word = { "A", "B", "C", "D", "E", "F","G", "H", "I", "J", "K", "L","M", "N", "O", "P", "Q", "R", "S", "T","U", "V", "W", "X", "Y", "Z" };

	for (int x = 0; x < this->cap_frame.cols; x += 15) {

		for (int y = 0; y < this->cap_frame.rows; y += 15) {

			ofColor color(this->cap_frame.at<cv::Vec3b>(y, x)[0], this->cap_frame.at<cv::Vec3b>(y, x)[1], this->cap_frame.at<cv::Vec3b>(y, x)[2]);
			ofSetColor(color);

			int moji_index = ofMap(color.getHue(), 0, 255, 0, word.size());
			this->font.drawString(word[moji_index], x, y);
		}
	}

	//this->cap_image.draw(0, 0);
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 15);

this->cap.open("D:\\video\\image2.mp4");

this->cap_size = cv::Size(1280, 720);

this->cap_image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

this->cap_frame = cv::Mat(this->cap_image.getHeight(), this->cap_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->cap_image.getPixels().getNumChannels()), this->cap_image.getPixels().getData(), 0);

}

//--------------------------------------------------------------

void ofApp::update() {

cv::Mat origin;

this->cap >> origin;

if (origin.empty()) {

this->cap.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::resize(origin, this->cap_frame, this->cap_size);

cv::cvtColor(this->cap_frame, this->cap_frame, CV_BGR2RGB);

this->cap_image.update();

}

//--------------------------------------------------------------

void ofApp::draw() {

vector<string> word = { "A", "B", "C", "D", "E", "F","G", "H", "I", "J", "K", "L","M", "N", "O", "P", "Q", "R", "S", "T","U", "V", "W", "X", "Y", "Z" };

for (int x = 0; x < this->cap_frame.cols; x += 15) {

for (int y = 0; y < this->cap_frame.rows; y += 15) {

ofColor color(this->cap_frame.at<cv::Vec3b>(y, x)[0], this->cap_frame.at<cv::Vec3b>(y, x)[1], this->cap_frame.at<cv::Vec3b>(y, x)[2]);

ofSetColor(color);

int moji_index = ofMap(color.getHue(), 0, 255, 0, word.size());

this->font.drawString(word[moji_index], x, y);

}

//this->cap_image.draw(0, 0);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180620

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2018年5月18日2018年5月18日

奥行が感じれる画面 openFrameworks OpenCV

[ Video ]

[ About ]
奥行が感じれる(かもしれない)画面を作ってみまいた。だいぶ前にSNSで見かけてやってみたかったヤツです。視点の認識はOpenCVの顔認識を使いました。

Surfaceの内蔵センサーの値を使っても何かしらできそう。

[ Source ]

#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) {}

	// Make Member
	cv::VideoCapture cap;
	cv::Size cap_size;
	cv::Mat src, mini_src;
	cv::CascadeClassifier face_cascade;
	ofPoint gap;
};

#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) {}

// Make Member

cv::VideoCapture cap;

cv::Size cap_size;

cv::Mat src, mini_src;

cv::CascadeClassifier face_cascade;

ofPoint gap;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofEnableDepthTest();
	ofSetLineWidth(2);

	this->cap.open(1);
	this->cap_size = cv::Size(320, 180);
	this->face_cascade.load("opencv-3.4.1\\build\\install\\etc\\haarcascades\\haarcascade_frontalface_default.xml");
	this->gap = ofPoint(0, 0);
}

//--------------------------------------------------------------
void ofApp::update() {

	this->cap >> src;
	cv::resize(src, mini_src, this->cap_size);

	vector<cv::Rect> faces;
	this->face_cascade.detectMultiScale(mini_src, faces);

	if(faces.size() > 0){

		this->gap = ofPoint(ofMap(faces[0].x + faces[0].width / 2, 0, this->cap_size.width, 30, -30), ofMap(faces[0].y, 0, this->cap_size.height, -30, 30));
	}

	cv::imshow("mini_src", mini_src);
	cv::waitKey(1);
}


//--------------------------------------------------------------
void ofApp::draw() {

	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	for (int z = 0; z > -600; z += -20) {

		ofFill();
		ofSetColor(239, ofMap(z, 0, -600, 255, 0));

		ofBeginShape();
		ofVertex(ofGetWidth() * 0.5, ofGetHeight() * 0.5, z);
		ofVertex(-ofGetWidth() * 0.5, ofGetHeight() * 0.5, z);
		ofVertex(-ofGetWidth() * 0.5, -ofGetHeight() * 0.5, z);
		ofVertex(ofGetWidth() * 0.5, -ofGetHeight() * 0.5, z);

		ofNextContour(true);

		ofVertex(ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);
		ofVertex(-ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);
		ofVertex(-ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);
		ofVertex(ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);

		ofEndShape(true);

		ofNoFill();
		ofSetColor(39);

		ofBeginShape();
		ofVertex(ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);
		ofVertex(-ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);
		ofVertex(-ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);
		ofVertex(ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);
		ofEndShape(true);

		ofTranslate(this->gap.x, this->gap.y);
	}
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(1920, 1080, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

ofSetLineWidth(2);

this->cap.open(1);

this->cap_size = cv::Size(320, 180);

this->face_cascade.load("opencv-3.4.1\\build\\install\\etc\\haarcascades\\haarcascade_frontalface_default.xml");

this->gap = ofPoint(0, 0);

}

//--------------------------------------------------------------

void ofApp::update() {

this->cap >> src;

cv::resize(src, mini_src, this->cap_size);

vector<cv::Rect> faces;

this->face_cascade.detectMultiScale(mini_src, faces);

if(faces.size() > 0){

this->gap = ofPoint(ofMap(faces[0].x + faces[0].width / 2, 0, this->cap_size.width, 30, -30), ofMap(faces[0].y, 0, this->cap_size.height, -30, 30));

}

cv::imshow("mini_src", mini_src);

cv::waitKey(1);

}

//--------------------------------------------------------------

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

for (int z = 0; z > -600; z += -20) {

ofFill();

ofSetColor(239, ofMap(z, 0, -600, 255, 0));

ofBeginShape();

ofVertex(ofGetWidth() * 0.5, ofGetHeight() * 0.5, z);

ofVertex(-ofGetWidth() * 0.5, ofGetHeight() * 0.5, z);

ofVertex(-ofGetWidth() * 0.5, -ofGetHeight() * 0.5, z);

ofVertex(ofGetWidth() * 0.5, -ofGetHeight() * 0.5, z);

ofNextContour(true);

ofVertex(ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);

ofVertex(-ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);

ofVertex(-ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);

ofVertex(ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);

ofEndShape(true);

ofNoFill();

ofSetColor(39);

ofBeginShape();

ofVertex(ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);

ofVertex(-ofGetWidth() * 0.47, ofGetHeight() * 0.47, z);

ofVertex(-ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);

ofVertex(ofGetWidth() * 0.47, -ofGetHeight() * 0.47, z);

ofEndShape(true);

ofTranslate(this->gap.x, this->gap.y);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(1920, 1080, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180518

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