opencv – ページ 25 – プログラミング de 落描き

2020年2月16日

Play different frame numbers for each block. openFrameworks

[ Video ]

[ About ]
ブロックごとに再生するフレームを変える。

Play different frame numbers for each block.

[ 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) {};

	cv::VideoCapture cap;
	cv::Size cap_size;
	int number_of_frames;
	vector<cv::Mat> frame_list;

	float rect_size;
	vector<cv::Mat> rect_frames;
	vector<unique_ptr<ofImage>> rect_images;
	vector<cv::Rect> cv_rects;
};

#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;

int number_of_frames;

vector<cv::Mat> frame_list;

float rect_size;

vector<cv::Mat> rect_frames;

vector<unique_ptr<ofImage>> rect_images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(255);

	this->cap.open("D:\\MP4\\Pexels Videos 2795748.mp4");
	this->cap_size = cv::Size(1280, 720);

	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_images.push_back(move(image));
			this->cv_rects.push_back(rect);
			this->rect_frames.push_back(frame);
		}
	}

	this->number_of_frames = 25 * 13;
	for (int i = 0; i < this->number_of_frames; i++) {

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

			return;
		}

		cv::resize(src, tmp, this->cap_size);
		cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

		this->frame_list.push_back(tmp);
	}
}

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

	for (int i = 0; i < this->rect_images.size(); i++) {

		int frames_index = ofMap(ofNoise(this->cv_rects[i].x * 0.0005, this->cv_rects[i].y * 0.0005, ofGetFrameNum() * 0.008), 0, 1, 0, this->number_of_frames);
		cv::Mat tmp_box_image(this->frame_list[frames_index], this->cv_rects[i]);
		tmp_box_image.copyTo(this->rect_frames[i]);

		this->rect_images[i]->update();
	}
}

//--------------------------------------------------------------
void ofApp::draw() {
		
	for (int i = 0; i < this->rect_images.size(); i++) {

		this->rect_images[i]->draw(this->cv_rects[i].x, this->cv_rects[i].y);
	}
}

//========================================================================
int main() {

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(255);

this->cap.open("D:\\MP4\\Pexels Videos 2795748.mp4");

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

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_images.push_back(move(image));

this->cv_rects.push_back(rect);

this->rect_frames.push_back(frame);

}

this->number_of_frames = 25 * 13;

for (int i = 0; i < this->number_of_frames; i++) {

cv::Mat src, tmp;

this->cap >> src;

if (src.empty()) {

return;

}

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

cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

this->frame_list.push_back(tmp);

}

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

void ofApp::update() {

for (int i = 0; i < this->rect_images.size(); i++) {

int frames_index = ofMap(ofNoise(this->cv_rects[i].x * 0.0005, this->cv_rects[i].y * 0.0005, ofGetFrameNum() * 0.008), 0, 1, 0, this->number_of_frames);

cv::Mat tmp_box_image(this->frame_list[frames_index], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

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

}

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

void ofApp::draw() {

for (int i = 0; i < this->rect_images.size(); i++) {

this->rect_images[i]->draw(this->cv_rects[i].x, this->cv_rects[i].y);

}

//========================================================================

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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2020年1月26日

Face detection and image split. openFrameworks

[ Video ]

[ About ]
OpenCVで顔検出して、そこだけ分裂

Face detection and image split.

[ 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) {};

	cv::VideoCapture cap;
	cv::Size cap_size;
	cv::Mat frame;
	cv::CascadeClassifier face_cascade;

	ofEasyCam cam;
	ofMesh mesh;
};

#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;

};

#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());
}

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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());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200126

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2020年1月18日

Face identification and character mask. openFrameworks

[ Video ]

[ About ]
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.

[ 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 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;
};

#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;

};

#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());
}

#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());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200118

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8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30