opencv – ページ 30 – プログラミング de 落描き

2018年11月7日2018年11月7日

Sea. openFrameworks

[ Video ]

[ About ]
Day 7 Sea.

OpenCVで使って動画をグレースケール化(6階調) & エッジ検出させて両方の絵を重ねて表示。

I use OpenCV to grayscale and detect edge. And, I overlay tow images.

[ 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::Size cap_size;

	cv::Mat gray;
	ofImage gray_image;

	cv::Mat edge;
	ofImage edge_image;
};

#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::Size cap_size;

cv::Mat gray;

ofImage gray_image;

cv::Mat edge;

ofImage edge_image;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->cap.open("D:\\video\\image15.mp4");
	this->cap_size = cv::Size(1280, 720);
	ofSetFrameRate(this->cap.get(CV_CAP_PROP_FPS));

	this->gray_image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_GRAYSCALE);
	this->gray = cv::Mat(this->gray_image.getHeight(), this->gray_image.getWidth(), CV_MAKETYPE(CV_8U, this->gray_image.getPixels().getNumChannels()), this->gray_image.getPixels().getData(), 0);

	this->edge_image.allocate(this->cap_size.width, this->cap_size.height,OF_IMAGE_GRAYSCALE);
	this->edge = cv::Mat(this->edge_image.getHeight(), this->edge_image.getWidth(), CV_MAKETYPE(CV_8U, this->edge_image.getPixels().getNumChannels()), this->edge_image.getPixels().getData(), 0);
}

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

	cv::Mat cap_frame, resize_frame;
	this->cap >> cap_frame;
	if (cap_frame.empty()) {

		cap.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}
	cv::resize(cap_frame, resize_frame, this->cap_size);

	cv::cvtColor(resize_frame, this->gray, CV_RGB2GRAY);
	this->gray.forEach<uchar>([](uchar &value, const int* position) -> void {

		value = floor(value / 50) * 50;
	});

	cv::Canny(this->gray, this->edge, 10, 200);

	this->gray_image.update();
	this->edge_image.update();
}

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

    this->gray_image.draw(0, 0);
	this->edge_image.draw(0, 0);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->cap.open("D:\\video\\image15.mp4");

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

ofSetFrameRate(this->cap.get(CV_CAP_PROP_FPS));

this->gray_image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_GRAYSCALE);

this->gray = cv::Mat(this->gray_image.getHeight(), this->gray_image.getWidth(), CV_MAKETYPE(CV_8U, this->gray_image.getPixels().getNumChannels()), this->gray_image.getPixels().getData(), 0);

this->edge_image.allocate(this->cap_size.width, this->cap_size.height,OF_IMAGE_GRAYSCALE);

this->edge = cv::Mat(this->edge_image.getHeight(), this->edge_image.getWidth(), CV_MAKETYPE(CV_8U, this->edge_image.getPixels().getNumChannels()), this->edge_image.getPixels().getData(), 0);

}

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

void ofApp::update() {

cv::Mat cap_frame, resize_frame;

this->cap >> cap_frame;

if (cap_frame.empty()) {

cap.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

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

cv::cvtColor(resize_frame, this->gray, CV_RGB2GRAY);

this->gray.forEach<uchar>([](uchar &value, const int* position) -> void {

value = floor(value / 50) * 50;

});

cv::Canny(this->gray, this->edge, 10, 200);

this->gray_image.update();

this->edge_image.update();

}

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

void ofApp::draw() {

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

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

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181107

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Amazon

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2018年9月17日

Ascii man. openframeworks

[ Video ]

[ About ]
Kinectから取得した画像&深度と差し替え用の絵をシェーダに送信、ピクセル単位の深度で描写する絵を切り替え。シェーダのおかげで描写がなめらか＆高速化！

Send images and depth acquired from Kinect, replacement pictures to the shaders, switch pictures depicted in units of pixels

[ Source ]

#pragma once

#include <Windows.h>
#include <NuiApi.h>
#include <opencv2/opencv.hpp>
#include "ofMain.h"

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) {}

	// Kinect
	INuiSensor* sensor;
	INuiCoordinateMapper* cordinate_mapper;
	HANDLE color_event;
	HANDLE color_handle;
	HANDLE depth_event;
	HANDLE depth_handle;
	HANDLE events[2];
	int width, height;

	// OpenCV
	cv::Mat frame;
	cv::Mat depth;

	// openFrameworks
	ofImage frame_img;
	ofImage depth_img;
	ofFbo fbo;
	ofShader shader;
	ofTrueTypeFont font;
};

#pragma once

#include <Windows.h>

#include <NuiApi.h>

#include <opencv2/opencv.hpp>

#include "ofMain.h"

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) {}

// Kinect

INuiSensor* sensor;

INuiCoordinateMapper* cordinate_mapper;

HANDLE color_event;

HANDLE color_handle;

HANDLE depth_event;

HANDLE depth_handle;

HANDLE events[2];

int width, height;

// OpenCV

cv::Mat frame;

cv::Mat depth;

// openFrameworks

ofImage frame_img;

ofImage depth_img;

ofFbo fbo;

ofShader shader;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("InstaKinect");

	// Create Instance
	this->sensor = nullptr;
	HRESULT result = S_OK;
	result = NuiCreateSensorByIndex(0, &sensor);
	if (FAILED(result)) {
		cout << "Error : Create Sensor" << endl;
		return;
	}

	// Initialize
	result = sensor->NuiInitialize(NUI_INITIALIZE_FLAG_USES_COLOR | NUI_INITIALIZE_FLAG_USES_DEPTH);
	if (FAILED(result)) {
		cout << "Error : Initialise COLOR" << endl;
		return;
	}

	// Color
	this->color_event = INVALID_HANDLE_VALUE;
	this->color_handle = INVALID_HANDLE_VALUE;
	color_event = CreateEventW(nullptr, true, false, nullptr);
	result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, 0, 2, color_event, &color_handle);
	if (FAILED(result)) {
		cout << "Error : Color Stream Open" << endl;
		return;
	}

	// Depth
	this->depth_event = INVALID_HANDLE_VALUE;
	this->depth_handle = INVALID_HANDLE_VALUE;
	depth_event = CreateEventW(nullptr, true, false, nullptr);
	result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_DEPTH, NUI_IMAGE_RESOLUTION_640x480, 0, 2, depth_event, &depth_handle);
	if (FAILED(result)) {
		cout << "Error : Depth Stream Open" << endl;
		return;
	}

	// Size
	unsigned long refWidth = 0;
	unsigned long refHeight = 0;
	NuiImageResolutionToSize(NUI_IMAGE_RESOLUTION_640x480, refWidth, refHeight);
	this->width = static_cast<int>(refWidth);
	this->height = static_cast<int>(refHeight);

	// Mapp
	this->cordinate_mapper = nullptr;
	result = sensor->NuiGetCoordinateMapper(&this->cordinate_mapper);
	if (FAILED(result)) {
		cout << "Error : Cordinate Mapper " << endl;
		return;
	}

	// OpenCV
	this->frame_img.allocate(this->width, this->height, OF_IMAGE_COLOR);
	this->frame = cv::Mat(this->frame_img.getHeight(), this->frame_img.getWidth(), CV_MAKETYPE(CV_8UC3, this->frame_img.getPixels().getNumChannels()), this->frame_img.getPixels().getData(), 0);
	this->depth_img.allocate(this->width, this->height, OF_IMAGE_COLOR);
	this->depth = cv::Mat(this->depth_img.getHeight(), this->depth_img.getWidth(), CV_MAKETYPE(CV_8UC3, this->depth_img.getPixels().getNumChannels()), this->depth_img.getPixels().getData(), 0);

	this->events[0] = this->color_event;
	this->events[1] = this->depth_event;

	// FBO & Shader
	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->shader.load("", "shader/shader.frag");

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 7);
}

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

	HRESULT result = S_OK;

	// Color Table
	cv::Vec3b color[7];
	color[0] = cv::Vec3b(0, 0, 0);
	color[1] = cv::Vec3b(255, 0, 0);
	color[2] = cv::Vec3b(0, 255, 0);
	color[3] = cv::Vec3b(0, 0, 255);
	color[4] = cv::Vec3b(255, 255, 0);
	color[5] = cv::Vec3b(255, 0, 255);
	color[6] = cv::Vec3b(0, 255, 255);

	std::vector<NUI_COLOR_IMAGE_POINT> color_point(width * height);

	// Wait frame update.
	ResetEvent(this->color_event);
	ResetEvent(this->depth_event);
	WaitForMultipleObjects(ARRAYSIZE(this->events), this->events, true, INFINITE);

	// Get frame from color camera.
	NUI_IMAGE_FRAME colorImageFrame = { 0 };
	result = sensor->NuiImageStreamGetNextFrame(this->color_handle, 0, &colorImageFrame);
	if (FAILED(result)) {
		std::cerr << "Error : NuiImageStreamGetNextFrame( COLOR )" << std::endl;
		return;
	}

	// Get image data.
	INuiFrameTexture* pColorFrameTexture = colorImageFrame.pFrameTexture;
	NUI_LOCKED_RECT colorLockedRect;
	pColorFrameTexture->LockRect(0, &colorLockedRect, nullptr, 0);

	//// Get frame from depth camera.
	NUI_IMAGE_FRAME depthImageFrame = { 0 };
	result = this->sensor->NuiImageStreamGetNextFrame(this->depth_handle, 0, &depthImageFrame);
	if (FAILED(result)) {
		std::cerr << "Error : NuiImageStreamGetNextFrame( DEPTH )" << std::endl;
		return;
	}

	// Get depth data.
	BOOL nearMode = false;
	INuiFrameTexture* pDepthFrameTexture = nullptr;
	this->sensor->NuiImageFrameGetDepthImagePixelFrameTexture(this->depth_handle, &depthImageFrame, &nearMode, &pDepthFrameTexture);
	NUI_LOCKED_RECT depthLockedRect;
	pDepthFrameTexture->LockRect(0, &depthLockedRect, nullptr, 0);

	// OpenCV(image)
	cv::Mat src = cv::Mat(this->height, this->width, CV_8UC4, reinterpret_cast<unsigned char*>(colorLockedRect.pBits));
	cv::cvtColor(src, this->frame, CV_BGRA2RGB);

	// OpenCV(depth)
	cv::Mat bufferMat = cv::Mat::zeros(height, width, CV_8UC3);
	NUI_DEPTH_IMAGE_PIXEL* depth_pixel = reinterpret_cast<NUI_DEPTH_IMAGE_PIXEL*>(depthLockedRect.pBits);
	this->cordinate_mapper->MapDepthFrameToColorFrame(NUI_IMAGE_RESOLUTION_640x480, width * height, depth_pixel, NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, width * height, &color_point[0]);
	for (int y = 0; y < height; y++) {
		for (int x = 0; x < width; x++) {
			unsigned int index = y * width + x;
			bufferMat.at<cv::Vec3b>(color_point[index].y, color_point[index].x)[0] = depth_pixel[index].depth / 255;
			bufferMat.at<cv::Vec3b>(color_point[index].y, color_point[index].x)[1] = depth_pixel[index].depth - (int)(depth_pixel[index].depth / 255) * 255;
		}
	}
	bufferMat.copyTo(this->depth);
	
	// Release
	pColorFrameTexture->UnlockRect(0);
	pDepthFrameTexture->UnlockRect(0);
	this->sensor->NuiImageStreamReleaseFrame(this->color_handle, &colorImageFrame);
	this->sensor->NuiImageStreamReleaseFrame(this->depth_handle, &depthImageFrame);

	// ofImage Update
	this->frame_img.update();
	this->depth_img.update();

	// Make FBO
	ofSeedRandom(39);
	string moji = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	this->fbo.begin();
	ofClear(0);

	ofBackground(0);

	for (int x = 0; x < ofGetWidth(); x += 10) {

		for (int y = 0; y < ofGetHeight(); y += 10) {

			ofSetColor(ofColor(0, 255 * ofNoise(x, y * 0.025 - ofGetFrameNum() * 0.05), 0));
			this->font.drawString(moji.substr((int)ofRandom(26), 1), x, y);
		}
	}

	this->fbo.end();

}

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

	ofSetColor(255);

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->frame_img, 1);
	this->shader.setUniformTexture("tex2", this->fbo.getTexture(), 2);
	this->shader.setUniformTexture("depth", this->depth_img, 3);

	ofRect(0, 0, ofGetWidth(), ofGetHeight());

	this->shader.end();
}

//========================================================================
int main() {
	ofSetupOpenGL(640, 480, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("InstaKinect");

// Create Instance

this->sensor = nullptr;

HRESULT result = S_OK;

result = NuiCreateSensorByIndex(0, &sensor);

if (FAILED(result)) {

cout << "Error : Create Sensor" << endl;

return;

}

// Initialize

result = sensor->NuiInitialize(NUI_INITIALIZE_FLAG_USES_COLOR | NUI_INITIALIZE_FLAG_USES_DEPTH);

if (FAILED(result)) {

cout << "Error : Initialise COLOR" << endl;

return;

}

// Color

this->color_event = INVALID_HANDLE_VALUE;

this->color_handle = INVALID_HANDLE_VALUE;

color_event = CreateEventW(nullptr, true, false, nullptr);

result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, 0, 2, color_event, &color_handle);

if (FAILED(result)) {

cout << "Error : Color Stream Open" << endl;

return;

}

// Depth

this->depth_event = INVALID_HANDLE_VALUE;

this->depth_handle = INVALID_HANDLE_VALUE;

depth_event = CreateEventW(nullptr, true, false, nullptr);

result = sensor->NuiImageStreamOpen(NUI_IMAGE_TYPE_DEPTH, NUI_IMAGE_RESOLUTION_640x480, 0, 2, depth_event, &depth_handle);

if (FAILED(result)) {

cout << "Error : Depth Stream Open" << endl;

return;

}

// Size

unsigned long refWidth = 0;

unsigned long refHeight = 0;

NuiImageResolutionToSize(NUI_IMAGE_RESOLUTION_640x480, refWidth, refHeight);

this->width = static_cast<int>(refWidth);

this->height = static_cast<int>(refHeight);

// Mapp

this->cordinate_mapper = nullptr;

result = sensor->NuiGetCoordinateMapper(&this->cordinate_mapper);

if (FAILED(result)) {

cout << "Error : Cordinate Mapper " << endl;

return;

}

// OpenCV

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

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

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

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

this->events[0] = this->color_event;

this->events[1] = this->depth_event;

// FBO & Shader

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

this->shader.load("", "shader/shader.frag");

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 7);

}

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

void ofApp::update() {

HRESULT result = S_OK;

// Color Table

cv::Vec3b color[7];

color[0] = cv::Vec3b(0, 0, 0);

color[1] = cv::Vec3b(255, 0, 0);

color[2] = cv::Vec3b(0, 255, 0);

color[3] = cv::Vec3b(0, 0, 255);

color[4] = cv::Vec3b(255, 255, 0);

color[5] = cv::Vec3b(255, 0, 255);

color[6] = cv::Vec3b(0, 255, 255);

std::vector<NUI_COLOR_IMAGE_POINT> color_point(width * height);

// Wait frame update.

ResetEvent(this->color_event);

ResetEvent(this->depth_event);

WaitForMultipleObjects(ARRAYSIZE(this->events), this->events, true, INFINITE);

// Get frame from color camera.

NUI_IMAGE_FRAME colorImageFrame = { 0 };

result = sensor->NuiImageStreamGetNextFrame(this->color_handle, 0, &colorImageFrame);

if (FAILED(result)) {

std::cerr << "Error : NuiImageStreamGetNextFrame( COLOR )" << std::endl;

return;

}

// Get image data.

INuiFrameTexture* pColorFrameTexture = colorImageFrame.pFrameTexture;

NUI_LOCKED_RECT colorLockedRect;

pColorFrameTexture->LockRect(0, &colorLockedRect, nullptr, 0);

//// Get frame from depth camera.

NUI_IMAGE_FRAME depthImageFrame = { 0 };

result = this->sensor->NuiImageStreamGetNextFrame(this->depth_handle, 0, &depthImageFrame);

if (FAILED(result)) {

std::cerr << "Error : NuiImageStreamGetNextFrame( DEPTH )" << std::endl;

return;

}

// Get depth data.

BOOL nearMode = false;

INuiFrameTexture* pDepthFrameTexture = nullptr;

this->sensor->NuiImageFrameGetDepthImagePixelFrameTexture(this->depth_handle, &depthImageFrame, &nearMode, &pDepthFrameTexture);

NUI_LOCKED_RECT depthLockedRect;

pDepthFrameTexture->LockRect(0, &depthLockedRect, nullptr, 0);

// OpenCV(image)

cv::Mat src = cv::Mat(this->height, this->width, CV_8UC4, reinterpret_cast<unsigned char*>(colorLockedRect.pBits));

cv::cvtColor(src, this->frame, CV_BGRA2RGB);

// OpenCV(depth)

cv::Mat bufferMat = cv::Mat::zeros(height, width, CV_8UC3);

NUI_DEPTH_IMAGE_PIXEL* depth_pixel = reinterpret_cast<NUI_DEPTH_IMAGE_PIXEL*>(depthLockedRect.pBits);

this->cordinate_mapper->MapDepthFrameToColorFrame(NUI_IMAGE_RESOLUTION_640x480, width * height, depth_pixel, NUI_IMAGE_TYPE_COLOR, NUI_IMAGE_RESOLUTION_640x480, width * height, &color_point[0]);

for (int y = 0; y < height; y++) {

for (int x = 0; x < width; x++) {

unsigned int index = y * width + x;

bufferMat.at<cv::Vec3b>(color_point[index].y, color_point[index].x)[0] = depth_pixel[index].depth / 255;

bufferMat.at<cv::Vec3b>(color_point[index].y, color_point[index].x)[1] = depth_pixel[index].depth - (int)(depth_pixel[index].depth / 255) * 255;

}

bufferMat.copyTo(this->depth);

// Release

pColorFrameTexture->UnlockRect(0);

pDepthFrameTexture->UnlockRect(0);

this->sensor->NuiImageStreamReleaseFrame(this->color_handle, &colorImageFrame);

this->sensor->NuiImageStreamReleaseFrame(this->depth_handle, &depthImageFrame);

// ofImage Update

this->frame_img.update();

this->depth_img.update();

// Make FBO

ofSeedRandom(39);

string moji = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

this->fbo.begin();

ofClear(0);

ofBackground(0);

for (int x = 0; x < ofGetWidth(); x += 10) {

for (int y = 0; y < ofGetHeight(); y += 10) {

ofSetColor(ofColor(0, 255 * ofNoise(x, y * 0.025 - ofGetFrameNum() * 0.05), 0));

this->font.drawString(moji.substr((int)ofRandom(26), 1), x, y);

}

this->fbo.end();

}

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

void ofApp::draw() {

ofSetColor(255);

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniformTexture("tex1", this->frame_img, 1);

this->shader.setUniformTexture("tex2", this->fbo.getTexture(), 2);

this->shader.setUniformTexture("depth", this->depth_img, 3);

ofRect(0, 0, ofGetWidth(), ofGetHeight());

this->shader.end();

}

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

int main() {

ofSetupOpenGL(640, 480, OF_WINDOW);

ofRunApp(new ofApp());

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;
uniform sampler2DRect depth;

out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

  float r = texture(depth, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y)).r;
  float g = texture(depth, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y)).g;
  float d = r * 255.0 + g;
  d /= 65,536;

  vec4 color = d < 0.1 ? t2 : t1;
  gl_FragColor = color;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

uniform sampler2DRect depth;

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

float r = texture(depth, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y)).r;

float g = texture(depth, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y)).g;

float d = r * 255.0 + g;

d /= 65,536;

vec4 color = d < 0.1 ? t2 : t1;

gl_FragColor = color;

}

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2018年9月8日2018年9月8日

Chroma key. openFrameworks

[ Video ]

[ About ]
WebカメラとMP4から取得した画像をテキスチャとしてシェーダーへ送信、指定した色を使ってクロマキー合成

Send the texture from web camera and mp4 video to shader. shader does chroma key.

[ 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 cap1;
	cv::Mat frame1;
	ofImage image1;

	cv::VideoCapture cap2;
	cv::Mat frame2;
	ofImage image2;

	ofFbo src;
	ofFbo dst;

	ofShader shader;
};

#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 cap1;

cv::Mat frame1;

ofImage image1;

cv::VideoCapture cap2;

cv::Mat frame2;

ofImage image2;

ofFbo src;

ofFbo dst;

ofShader shader;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	this->cap1.open(1);
	this->cap2.open("beach.mp4");
	this->cap_size = cv::Size(1280, 720);

	this->image1.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->frame1 = cv::Mat(cv::Size(this->image1.getWidth(), this->image1.getHeight()), CV_MAKETYPE(CV_8UC3, this->image1.getPixels().getNumChannels()), this->image1.getPixels().getData(), 0);

	this->image2.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->frame2 = cv::Mat(cv::Size(this->image2.getWidth(), this->image2.getHeight()), CV_MAKETYPE(CV_8UC3, this->image2.getPixels().getNumChannels()), this->image2.getPixels().getData(), 0);

	this->src.allocate(ofGetWidth(), ofGetHeight());
	this->dst.allocate(ofGetWidth(), ofGetHeight());

	this->shader.load("shader/shader.vert", "shader/shader.frag");

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

	cv::Mat src;

	this->cap1 >> src;
	if (src.empty()) {

		this->cap1.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}
	cv::resize(src, this->frame1, this->cap_size);
	cv::cvtColor(this->frame1, this->frame1, CV_BGR2RGB);
	cv::flip(this->frame1, this->frame1, 2);
	this->image1.update();

	this->cap2 >> src;
	if (src.empty()) {

		this->cap2.set(CV_CAP_PROP_POS_FRAMES, 1);
		return;
	}
	cv::resize(src, this->frame2, this->cap_size);
	cv::cvtColor(this->frame2, this->frame2, CV_BGR2RGB);
	this->image2.update();
}

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

	this->dst.begin();
	ofClear(0);

	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniform2f("mouse", ofGetMouseX(), ofGetMouseY());
	this->shader.setUniformTexture("tex1", this->image1, 1);
	this->shader.setUniformTexture("tex2", this->image2, 2);

	this->src.draw(0, 0);
	this->shader.end();

	this->dst.end();

	this->dst.draw(0, 0);
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(1280, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

this->cap1.open(1);

this->cap2.open("beach.mp4");

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

this->image1.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

this->frame1 = cv::Mat(cv::Size(this->image1.getWidth(), this->image1.getHeight()), CV_MAKETYPE(CV_8UC3, this->image1.getPixels().getNumChannels()), this->image1.getPixels().getData(), 0);

this->image2.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

this->frame2 = cv::Mat(cv::Size(this->image2.getWidth(), this->image2.getHeight()), CV_MAKETYPE(CV_8UC3, this->image2.getPixels().getNumChannels()), this->image2.getPixels().getData(), 0);

this->src.allocate(ofGetWidth(), ofGetHeight());

this->dst.allocate(ofGetWidth(), ofGetHeight());

this->shader.load("shader/shader.vert", "shader/shader.frag");

}

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

void ofApp::update() {

cv::Mat src;

this->cap1 >> src;

if (src.empty()) {

this->cap1.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::resize(src, this->frame1, this->cap_size);

cv::cvtColor(this->frame1, this->frame1, CV_BGR2RGB);

cv::flip(this->frame1, this->frame1, 2);

this->image1.update();

this->cap2 >> src;

if (src.empty()) {

this->cap2.set(CV_CAP_PROP_POS_FRAMES, 1);

return;

}

cv::resize(src, this->frame2, this->cap_size);

cv::cvtColor(this->frame2, this->frame2, CV_BGR2RGB);

this->image2.update();

}

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

void ofApp::draw() {

this->dst.begin();

ofClear(0);

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniform2f("mouse", ofGetMouseX(), ofGetMouseY());

this->shader.setUniformTexture("tex1", this->image1, 1);

this->shader.setUniformTexture("tex2", this->image2, 2);

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

this->shader.end();

this->dst.end();

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

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(1280, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;
in vec2 texcoord;
out vec2 texCoordVarying;

void main(){

	texCoordVarying = texcoord;
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

in vec2 texcoord;

out vec2 texCoordVarying;

void main(){

texCoordVarying = texcoord;

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform vec2 mouse;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

  vec4 c1 = texture(tex1, texCoordVarying);
  vec4 c2 = texture(tex2, texCoordVarying);
  vec4 m = texture(tex1, mouse);

  float d = length(c1 - m);

  outputColor = (d > 0.25) ? c1 : c2;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform vec2 mouse;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec2 p = (gl_FragCoord.xy * 2.0 - resolution) / min(resolution.x, resolution.y);

vec4 c1 = texture(tex1, texCoordVarying);

vec4 c2 = texture(tex2, texCoordVarying);

vec4 m = texture(tex1, mouse);

float d = length(c1 - m);

outputColor = (d > 0.25) ? c1 : c2;

}

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