opencv – ページ 36 – プログラミング de 落描き

2018年5月8日2018年5月8日

OpenCVで影つけ雨降り openFrameworks

[ Video ]

[ About ]
Twitterのタイムラインで水の波紋を作っている方を見かけて「影を活かすならこれじゃん！」と、過去のヤツと昨日のヤツを組み合わせました。

影を足しただけですが、水面と底面が感じられて、透明感が当社比390% UP！

最近は、あえてクラスは起こさずに、ofSeedRandomを使って、生成された固定の乱数とフレーム番号の組み合わせで乗り切ってきたんですが、今回は断念してRippleクラスを作りました。

あとopenFrameworksの0.10.0が出たのでVisual Studio 2017で作りました。あんま自分が触ってる周りでは関係なさそうですが…

[ Source ]

#pragma once
#include "ofMain.h"
#include "Ripple.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) {};

	vector<unique_ptr<Ripple>> ripples;

	ofFbo fbo;
	ofPixels pixels;
	cv::Mat pixels_mat;
};

#pragma once

#include "ofMain.h"

#include "Ripple.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) {};

vector<unique_ptr<Ripple>> ripples;

ofFbo fbo;

ofPixels pixels;

cv::Mat pixels_mat;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofNoFill();
	ofSetLineWidth(1.5);

	// Fbo Initialize (+ Shadow Gap)
	this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);

	// Link pixels And pixels_mat
	this->fbo.readToPixels(this->pixels);
	this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());
}

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

	// Make New Ripple
	if (ofGetFrameNum() % 3 == 0) {

		ofPoint point(ofRandom(this->fbo.getWidth()), ofRandom(this->fbo.getHeight()), ofRandom(500, 1000));
		unique_ptr<Ripple> ripple(new Ripple(point));
		this->ripples.push_back(move(ripple));
	}

	// Draw Ripples
	this->fbo.begin();
	ofClear(0);

	for (int i = this->ripples.size() - 1; i >= 0; i--) {

		if (this->ripples[i]->isLife()) {

			this->ripples[i]->update();
			this->ripples[i]->draw();
		}
		else {

			this->ripples.erase(this->ripples.begin() + i);
		}
	}

	this->fbo.end();

	// Copy Fbo To pixels
	this->fbo.readToPixels(this->pixels);

	// Gray
	cv::Mat gray_mat;
	cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGBA2GRAY);
	for (int y = 0; y < this->pixels_mat.cols; y++) {

		for (int x = 0; x < this->pixels_mat.rows; x++) {

			if (gray_mat.at<unsigned char>(y, x) > 0) {

				this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), this->pixels_mat.at<cv::Vec4b>(y, x)[3]);
			}
		}
	}

	// Blur Process
	cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);
}

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

	ofSetColor(255);

	// Draw Shadow
	ofImage draw_image;
	draw_image.setFromPixels(this->pixels);
	draw_image.draw(-5, -5);

	// Draw Fbo Image 
	this->fbo.draw(-25, -25);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofNoFill();

ofSetLineWidth(1.5);

// Fbo Initialize (+ Shadow Gap)

this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);

// Link pixels And pixels_mat

this->fbo.readToPixels(this->pixels);

this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());

}

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

void ofApp::update() {

// Make New Ripple

if (ofGetFrameNum() % 3 == 0) {

ofPoint point(ofRandom(this->fbo.getWidth()), ofRandom(this->fbo.getHeight()), ofRandom(500, 1000));

unique_ptr<Ripple> ripple(new Ripple(point));

this->ripples.push_back(move(ripple));

}

// Draw Ripples

this->fbo.begin();

ofClear(0);

for (int i = this->ripples.size() - 1; i >= 0; i--) {

if (this->ripples[i]->isLife()) {

this->ripples[i]->update();

this->ripples[i]->draw();

}

else {

this->ripples.erase(this->ripples.begin() + i);

}

this->fbo.end();

// Copy Fbo To pixels

this->fbo.readToPixels(this->pixels);

// Gray

cv::Mat gray_mat;

cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGBA2GRAY);

for (int y = 0; y < this->pixels_mat.cols; y++) {

for (int x = 0; x < this->pixels_mat.rows; x++) {

if (gray_mat.at<unsigned char>(y, x) > 0) {

this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), this->pixels_mat.at<cv::Vec4b>(y, x)[3]);

}

// Blur Process

cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);

}

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

void ofApp::draw() {

ofSetColor(255);

// Draw Shadow

ofImage draw_image;

draw_image.setFromPixels(this->pixels);

draw_image.draw(-5, -5);

// Draw Fbo Image

this->fbo.draw(-25, -25);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Ripple
{
public:

	Ripple();
	Ripple(ofPoint point);
	void update();
	void draw();
	bool isLife();
private:

	ofPoint point;
	float radius;
	float radius_max;
	float radius_span;
	ofColor body_color;
	bool life;
};

#pragma once

#include "ofMain.h"

class Ripple

{

public:

Ripple();

Ripple(ofPoint point);

void update();

void draw();

bool isLife();

private:

ofPoint point;

float radius;

float radius_max;

float radius_span;

ofColor body_color;

bool life;

};

#include "Ripple.h"

Ripple::Ripple() : Ripple(ofPoint()) {

}

Ripple::Ripple(ofPoint point) {

	this->point = point;
	this->radius = 1;
	this->radius_max = point.z / 10;
	this->body_color.setHsb(ofRandom(255), 255, 255);
	this->life = true;
}

void Ripple::update() {

	if (this->life == false) {

		return;
	}

	if (this->point.z > 0) {

		this->point -= ofPoint(0, 0, 30);
		return;
	}

	if (this->radius > this->radius_max) {

		this->life = false;
		return;
	}
	else {

		this->radius += 1;
	}
}

void Ripple::draw() {

	ofPushMatrix();
	ofTranslate(this->point);

	if (this->point.z > 0) {

		ofSetColor(this->body_color);
		ofDrawLine(ofPoint(), ofPoint(0, 0, 30));
	}
	else {

		ofSetColor(this->body_color, ofMap(this->radius, 1, this->radius_max, 255, 10));
		ofBeginShape();
		for (int deg = 0; deg < 360; deg++) {

			ofVertex(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD));
		}
		ofEndShape(true);
	}

	ofPopMatrix();
}

bool Ripple::isLife() {

	return this->life;
}

#include "Ripple.h"

Ripple::Ripple() : Ripple(ofPoint()) {

}

Ripple::Ripple(ofPoint point) {

this->point = point;

this->radius = 1;

this->radius_max = point.z / 10;

this->body_color.setHsb(ofRandom(255), 255, 255);

this->life = true;

}

void Ripple::update() {

if (this->life == false) {

return;

}

if (this->point.z > 0) {

this->point -= ofPoint(0, 0, 30);

return;

}

if (this->radius > this->radius_max) {

this->life = false;

return;

}

else {

this->radius += 1;

}

void Ripple::draw() {

ofPushMatrix();

ofTranslate(this->point);

if (this->point.z > 0) {

ofSetColor(this->body_color);

ofDrawLine(ofPoint(), ofPoint(0, 0, 30));

}

else {

ofSetColor(this->body_color, ofMap(this->radius, 1, this->radius_max, 255, 10));

ofBeginShape();

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

ofVertex(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

}

ofPopMatrix();

}

bool Ripple::isLife() {

return this->life;

}

[ Link ]
https://github.com/junkiyoshi/Insta20180508

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2018年5月7日2018年5月7日

ofFboのofPixelsをOpenCVで画像処理 openFrameworks

[ Video ]

[ About ]
以前、作成したofFboのデータを加工する手法に、OpenCVを加え、画像処理を組み込めるようにしました。ofFboへ描写した内容にOpenCVでグレースケール＆ぼかしを加え、結果と元のofFboと組み合わせて描写しています。

ofFboは透過度を持っているので、重ねて描写出来るという事が新しい発見でした。

[ Source ]

#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) {};

	ofFbo fbo;
	ofPixels pixels;
	cv::Mat pixels_mat;
};

#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) {};

ofFbo fbo;

ofPixels pixels;

cv::Mat pixels_mat;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);
	this->fbo.readToPixels(this->pixels);
	// Link pixels And pixels_mat
	this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());
}

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

	ofSeedRandom(39);

	this->fbo.begin();
	ofClear(0);
	ofTranslate(this->fbo.getWidth() / 2, this->fbo.getHeight() / 2);

	ofFill();
	// Draw Small Object 
	ofSetColor(200, 39, 39);
	int radius = 150;
	ofBeginShape();
	for (int deg = 0; deg <= 360; deg += 1) {

		ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0.5, 1);
		ofVertex(point * noise_value);
	}

	ofNextContour();
	radius *= 0.5;
	for (int deg = 0; deg <= 360; deg += 1) {

		ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0.5, 1);
		ofVertex(point * noise_value);
	}
	ofEndShape(true);

	// Draw Big Object 
	ofSetColor(39, 39, 200);
	radius = 350;
	ofBeginShape();
	for (int deg = 0; deg <= 360; deg += 1) {

		ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.001), 0, 1, 0.5, 1.0);

		ofVertex(point * noise_value);
	}

	ofNextContour();
	for (int deg = 0; deg <= 360; deg += 1) {

		ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.001), 0, 1, 0.5, 1.0);

		ofVertex(point * noise_value * 0.95);
	}
	ofEndShape(true);

	this->fbo.end();
	// Copy Fbo To pixels
	this->fbo.readToPixels(this->pixels);

	// Gray
	cv::Mat gray_mat;
	cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGBA2GRAY);
	for (int y = 0; y < this->pixels_mat.cols; y++) {

		for (int x = 0; x < this->pixels_mat.rows; x++) {

			if (gray_mat.at<unsigned char>(y, x) > 0) {

				this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), this->pixels_mat.at<cv::Vec4b>(y, x)[3]);
			}
		}
	}

	// Blur Process
	cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);
}

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

	// Draw Shadow
	ofSetColor(255, 192);
	ofImage draw_image;
	draw_image.setFromPixels(this->pixels);
	draw_image.draw(-5, -5);

	// Draw Fbo Image 
	ofSetColor(255);
	this->fbo.draw(-25, -25);
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25);

this->fbo.readToPixels(this->pixels);

// Link pixels And pixels_mat

this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData());

}

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

void ofApp::update() {

ofSeedRandom(39);

this->fbo.begin();

ofClear(0);

ofTranslate(this->fbo.getWidth() / 2, this->fbo.getHeight() / 2);

ofFill();

// Draw Small Object

ofSetColor(200, 39, 39);

int radius = 150;

ofBeginShape();

for (int deg = 0; deg <= 360; deg += 1) {

ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0.5, 1);

ofVertex(point * noise_value);

}

ofNextContour();

radius *= 0.5;

for (int deg = 0; deg <= 360; deg += 1) {

ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.005), 0, 1, 0.5, 1);

ofVertex(point * noise_value);

}

ofEndShape(true);

// Draw Big Object

ofSetColor(39, 39, 200);

radius = 350;

ofBeginShape();

for (int deg = 0; deg <= 360; deg += 1) {

ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.001), 0, 1, 0.5, 1.0);

ofVertex(point * noise_value);

}

ofNextContour();

for (int deg = 0; deg <= 360; deg += 1) {

ofPoint point(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

float noise_value = ofMap(ofNoise(point.x * 0.005, point.y * 0.005, ofGetFrameNum() * 0.001), 0, 1, 0.5, 1.0);

ofVertex(point * noise_value * 0.95);

}

ofEndShape(true);

this->fbo.end();

// Copy Fbo To pixels

this->fbo.readToPixels(this->pixels);

// Gray

cv::Mat gray_mat;

cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGBA2GRAY);

for (int y = 0; y < this->pixels_mat.cols; y++) {

for (int x = 0; x < this->pixels_mat.rows; x++) {

if (gray_mat.at<unsigned char>(y, x) > 0) {

this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), gray_mat.at<unsigned char>(y, x), this->pixels_mat.at<cv::Vec4b>(y, x)[3]);

}

// Blur Process

cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10);

}

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

void ofApp::draw() {

// Draw Shadow

ofSetColor(255, 192);

ofImage draw_image;

draw_image.setFromPixels(this->pixels);

draw_image.draw(-5, -5);

// Draw Fbo Image

ofSetColor(255);

this->fbo.draw(-25, -25);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/insta20180507

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2018年4月7日2018年4月6日

Clocks + MP4 openFrameworks OpenCv

[ Video ]

[ About ]
昨日の自分の動画を見ていて、視覚的な絵を足したら面白いなと思いつき。

動画の読み込みや合成は、OpenCVを使って画像処理をしています。起動時(setup内)で、動画から全フレーム取り出し、リサイズ、配列へ格納しています。

そのあとはNoise関数でそれぞれに描写するフレーム番号を決定、用意しておいた配列から対応するフレーム画像をコピー・結合(今回の場合は25枚)して大きな1枚の画像を生成しています。

1枚に結合して描写する事によって、思っていたより早く動いてくれました。今回はリアルタイムにキャプチャした動画を挙げているので、実際の動作速度です。

[ Source ]

#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) {};

	// Make Method
	void draw_clock(ofPoint point, int frame_number);

	// Make Member
	ofFbo fbo;

	cv::VideoCapture cap;
	cv::Size cap_size;
	vector<cv::Mat> frames;

	cv::Mat blend_frame;
	ofImage blend_image;
};

#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) {};

// Make Method

void draw_clock(ofPoint point, int frame_number);

// Make Member

ofFbo fbo;

cv::VideoCapture cap;

cv::Size cap_size;

vector<cv::Mat> frames;

cv::Mat blend_frame;

ofImage blend_image;

};

#include "ofApp.h"

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

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

	this->cap.open("movie_file_path.mp4");
	this->cap_size = cv::Size(256, 144);

	while (true) {

		cv::Mat src, mini_src;
		this->cap >> src;
		if (src.empty()) {

			break;
		}
		cv::resize(src, mini_src, this->cap_size);
		cv::cvtColor(mini_src, mini_src, CV_RGB2BGR);

		this->frames.push_back(mini_src);
	}

	this->blend_image.allocate(ofGetWidth(), ofGetHeight(), OF_IMAGE_COLOR);
	this->blend_frame = cv::Mat(this->blend_image.getHeight(), this->blend_image.getWidth(), CV_MAKETYPE(CV_8UC3, this->blend_image.getPixels().getNumChannels()), this->blend_image.getPixels().getData(), 0);
}

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

	cv::Rect rect;
	rect.width = this->cap_size.width;
	rect.height = this->cap_size.height;
	for (int x = 0; x < this->blend_image.getWidth(); x += rect.width) {
		
		for (int y = 0; y < this->blend_image.getHeight(); y += rect.height) {

			rect.x = x;
			rect.y = y;

			float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);
			int frame_number = noise_value * this->frames.size();

			cv::Mat roi(this->blend_frame, rect);
			this->frames[frame_number].copyTo(roi);
		}
	}

	this->blend_image.update();
}

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

	ofSetColor(255);
	this->blend_image.draw(0, 0);

	ofSetColor(239, 239);
	for (int x = 0; x < this->blend_image.getWidth(); x += this->cap_size.width) {

		for (int y = 0; y < this->blend_image.getHeight(); y += this->cap_size.height) {

			float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);
			int frame_number = noise_value * this->frames.size();

			this->draw_clock(ofPoint(x + this->cap_size.width / 2, y + this->cap_size.height / 2), frame_number);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_clock(ofPoint point, int frame_number) {

	int radius = 60;

	int minute = ofMap(frame_number, 0, this->frames.size() - 1, 0, 720);
	int time = minute / 60;
	minute = minute - time * 60;
	int time_deg = time * 30 + ofMap(minute, 0, 59, 0, 30);
	int minute_deg = minute * 6;

	ofPushMatrix();
	ofTranslate(point);
	ofRotate(-45);

	ofSetLineWidth(3);
	ofNoFill();

	ofBeginShape();
	for (int deg = 0; deg < 360; deg += 1) {

		ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
	}
	ofEndShape(true);

	ofSetLineWidth(5);
	ofDrawLine(ofPoint(), ofPoint(radius * 0.6 * cos(time_deg * DEG_TO_RAD), radius * 0.6 * sin(time_deg * DEG_TO_RAD)));

	ofSetLineWidth(3);
	ofDrawLine(ofPoint(), ofPoint(radius * 0.8 * cos(minute_deg * DEG_TO_RAD), radius * 0.8 * sin(minute_deg * DEG_TO_RAD)));

	ofFill();
	ofDrawCircle(ofPoint(), 5);

	ofPopMatrix();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(39);

ofSetWindowTitle("Insta");

this->cap.open("movie_file_path.mp4");

this->cap_size = cv::Size(256, 144);

while (true) {

cv::Mat src, mini_src;

this->cap >> src;

if (src.empty()) {

break;

}

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

cv::cvtColor(mini_src, mini_src, CV_RGB2BGR);

this->frames.push_back(mini_src);

}

this->blend_image.allocate(ofGetWidth(), ofGetHeight(), OF_IMAGE_COLOR);

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

}

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

void ofApp::update() {

cv::Rect rect;

rect.width = this->cap_size.width;

rect.height = this->cap_size.height;

for (int x = 0; x < this->blend_image.getWidth(); x += rect.width) {

for (int y = 0; y < this->blend_image.getHeight(); y += rect.height) {

rect.x = x;

rect.y = y;

float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);

int frame_number = noise_value * this->frames.size();

cv::Mat roi(this->blend_frame, rect);

this->frames[frame_number].copyTo(roi);

}

this->blend_image.update();

}

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

void ofApp::draw() {

ofSetColor(255);

this->blend_image.draw(0, 0);

ofSetColor(239, 239);

for (int x = 0; x < this->blend_image.getWidth(); x += this->cap_size.width) {

for (int y = 0; y < this->blend_image.getHeight(); y += this->cap_size.height) {

float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.001);

int frame_number = noise_value * this->frames.size();

this->draw_clock(ofPoint(x + this->cap_size.width / 2, y + this->cap_size.height / 2), frame_number);

}

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

void ofApp::draw_clock(ofPoint point, int frame_number) {

int radius = 60;

int minute = ofMap(frame_number, 0, this->frames.size() - 1, 0, 720);

int time = minute / 60;

minute = minute - time * 60;

int time_deg = time * 30 + ofMap(minute, 0, 59, 0, 30);

int minute_deg = minute * 6;

ofPushMatrix();

ofTranslate(point);

ofRotate(-45);

ofSetLineWidth(3);

ofNoFill();

ofBeginShape();

for (int deg = 0; deg < 360; deg += 1) {

ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

}

ofEndShape(true);

ofSetLineWidth(5);

ofDrawLine(ofPoint(), ofPoint(radius * 0.6 * cos(time_deg * DEG_TO_RAD), radius * 0.6 * sin(time_deg * DEG_TO_RAD)));

ofSetLineWidth(3);

ofDrawLine(ofPoint(), ofPoint(radius * 0.8 * cos(minute_deg * DEG_TO_RAD), radius * 0.8 * sin(minute_deg * DEG_TO_RAD)));

ofFill();

ofDrawCircle(ofPoint(), 5);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180406_02

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