ofTexture ofxImageTS::tanB(ofImage image){
    
    ofTexture texture;
    ofPixels copy;
    copy.allocate(image.getWidth(), image.getHeight(), OF_PIXELS_RGB);
    texture.allocate(image);
    float Tan;
    for(int i = 0; i < image.getPixels().size()-3; i += 3){
        Tan = tan(i);
        copy[i] =  image.getPixels()[i];
        copy[i+1] = image.getPixels()[i+1];
        copy[i+2] = Tan * image.getPixels()[i+2];
    }
    texture.loadData(copy);
    return texture;
}

ofTexture ofxImageTS::noise(ofImage image, float mix) {
    
    float avg;
    ofTexture texture;
    ofPixels copy;
    copy.allocate(image.getWidth(), image.getHeight(), OF_PIXELS_RGB);
    texture.allocate(image);
    for(int i = 0; i < image.getPixels().size()-3; i += 3){
        avg = (image.getPixels()[i] + image.getPixels()[i+1] + image.getPixels()[i+2])/3.0f;
        copy[i] = avg * (125 - avg) * mix;
        copy[i+1] = avg * (125 - avg) * mix;
        copy[i+2] = avg * (125 - avg) * mix;
    }
    texture.loadData(copy);
    return texture;
}

//--------------------------------------------------------------
ofImage ofxContrast::setBrightnessAndContrast(ofImage& _img, float brightnessAmount, float contrastAmount){
    ofxCvColorImage cvimg;
    cvimg.allocate(_img.width, _img.height);
    cvimg.setFromPixels(_img.getPixels(), _img.width, _img.height);
    
	float brightnessVal = MAX(-127, MIN(127, brightnessAmount));
	float contrastVal = MAX(-127, MIN(127, contrastAmount));
	
	unsigned char data[ 256 ];
	CvMat * matrix;
	double delta, a, b;
	
	matrix = cvCreateMatHeader( 1, 256, CV_8UC1 );
    cvSetData( matrix, data, 0 );
	
	if ( contrastVal>0 ) {
        delta = (127.0f*contrastVal) / 128.0f;
        a = 255.0f / ( 255.0f-(delta*2.0f) );
        b = a * (brightnessVal-delta);
    }
    else {
		delta = (-128.0f*contrastVal) / 128.0f;
		a = ( 256.0f-(delta*2.0f) ) / 255.0f;
		b = ( a*brightnessVal )+delta;
    }
	
	for( int i=0; i<256; i++ ) {
		int value = cvRound( (a*i)+b );
		data[i]	= (unsigned char) min( max(0,value), 255 );
	}
	
    cvLUT( cvimg.getCvImage(), cvimg.getCvImage(), matrix );
	cvReleaseMat( &matrix );
    
    ofImage ofimg;
    ofimg.allocate(_img.width, _img.height, OF_IMAGE_COLOR);
    ofimg.setFromPixels(cvimg.getPixels(), _img.width, _img.height, OF_IMAGE_COLOR);
	return ofimg;
}

bool ofxEpilog::send(ofImage img, int w_mm, int h_mm)
{
    //
    // TODO([email protected]): finish implementation
    //
    
    if(!img.isAllocated())
        return false;
    
    if(w_mm <= 0 || h_mm <= 0)
        return false;

    ofLog(OF_LOG_WARNING) << "bool ofxEpilog::send(ofImage img, int w_mm, int h_mm) is not implemented yet.";
    return false;
    
    //
    // dummy implementation
    //
    ofBuffer buffer;
    buffer.append(createPayloadHeader(getMachineProfile(), getOutputConfig()));
    
    // create raster part
    buffer.append(createPayloadRasterBody(img, getOutputConfig()));
    
    // end raster part regardless of it's empty
    buffer.append(PCL_RASTER_END);
    
    // begin HPGL commands (vector part)
    buffer.append(HPGL_START);
    buffer.append(HPGL_VECTOR_INIT + HPGL_CMD_DELIMITER);
    
    if(!keep_alive)
        buffer.append(createPayloadFooter()); // end the session
    
    if(pjl_file.get() != NULL)
        pjl_file->writeFromBuffer(buffer);
    
    return tcp_client.sendRaw(buffer);
}

void ForbiddenPlanet::drawContours(float contrast, ofImage img,float sizeMultX,float sizeMultY, ofRectangle faceBoundingBox)
{
    
    
    ofxCvGrayscaleImage faceImg;
    
    faceImg.setFromPixels(img.getPixelsRef());
    
    faceImg.brightnessContrast(0.05f,contrast);
    
    contourFinder.findContours(faceImg, 5, (340*240), 45, true);
    ofSetColor(200,0,50);
    
    for (int i = 0; i < contourFinder.nBlobs; i++){
        
        float lastX = 0;
        float lastY = 0;
        
        glBegin(GL_LINES);
        for(int j =0; j < contourFinder.blobs[i].nPts;j++)
        {
            float x = FACE_TARGET_POS_X - (faceImg.width*sizeMultX)/2+ contourFinder.blobs[i].pts[j].x * sizeMultX;
            float y = FACE_TARGET_POS_Y - (faceImg.height*sizeMultY)/2 + contourFinder.blobs[i].pts[j].y * sizeMultY;
            
            if(ofDist(lastX,lastY,x,y) < 25.0 && (int)lastX != 0 && (int)lastY != 0)
            {
                glVertex2f(x,y);
                glVertex2f(lastX,lastY);
            }
            lastX = x;
            lastY = y;
            //ofCurveVertex( contourFinder.blobs[i].pts[j].x, contourFinder.blobs[i].pts[j].y);
            
        }
        glEnd();
    }
}

void ParticleTrace :: drawSampleImage ( ofImage& img )
{
	int w = sampleGridW;
	int h = sampleGridH;
	int b = img.bpp / 8;
	
	unsigned char* pixels = img.getPixels();	
	
	for( int y=0; y<img.height; y++ )
	{
		for( int x=0; x<img.width; x++ )
		{
			int p = ( y * img.width + x ) * b;
			
			if( img.type == OF_IMAGE_GRAYSCALE )
			{
				ofSetColor( pixels[ p ], pixels[ p ], pixels[ p ] );
			}
			else if( img.type == OF_IMAGE_COLOR )
			{
				ofSetColor( pixels[ p + 0 ], pixels[ p + 1 ], pixels[ p + 2 ] );
			}
			else if( img.type == OF_IMAGE_COLOR_ALPHA )
			{
				ofSetColor( pixels[ p + 0 ], pixels[ p + 1 ], pixels[ p + 2 ], pixels[ p + 3 ] );
			}

			ofFill();
			ofRect( x * w, y * h, w, h );
			
			ofNoFill();
			ofSetColor( 100, 100, 100 );
			ofRect( x * w, y * h, w, h );
		}
	}
}

void faceColorToTexture(ofMesh& mesh, ofImage& image)
{
	vector<ofFloatColor> &color = mesh.getColors();
	int num_face = color.size() / 3;
	
	int tex_size = ofNextPow2(ceil(sqrt(num_face)));
	
	bool arb = ofGetUsingArbTex();
	ofDisableArbTex();
	image.allocate(tex_size, tex_size, OF_IMAGE_COLOR);
	if (arb) ofEnableArbTex();
	
	mesh.clearTexCoords();
	
	image.getPixelsRef().set(0);
	
	float texel_size = (1. / image.getWidth()) * 0.5;
	
	for (int i = 0; i < num_face; i++)
	{
		int u = (i % tex_size);
		int v = (i / tex_size);
		
		ofColor c = color[i * 3];
		
		image.setColor(u, v, c);
		
		float uu = (float)u / image.getWidth() + texel_size;
		float vv = (float)v / image.getHeight() + texel_size;
		
		mesh.addTexCoord(ofVec2f(uu, vv));
		mesh.addTexCoord(ofVec2f(uu, vv));
		mesh.addTexCoord(ofVec2f(uu, vv));
	}
	
	image.update();
	mesh.clearColors();
}

ofTexture ofxImageTS::dualist(ofImage image, ofColor base, ofColor top) {
    int avg;
    ofTexture texture;
    ofPixels copy;
    copy.allocate(image.getWidth(), image.getHeight(), OF_PIXELS_RGB);
    texture.allocate(image);
    for(int i = 0; i < image.getPixels().size()-3; i += 3){
        avg = (image.getPixels()[i] + image.getPixels()[i+1] + image.getPixels()[i+2])/3;
        if(avg < 128) {
            copy[i] = base.r;
            copy[i+1] = base.g;
            copy[i+2] = base.b;
        }
        else {
            copy[i] = top.r;
            copy[i+1] = top.g;
            copy[i+2] = top.b;
        }
    }
    texture.loadData(copy);
    return texture;
}

ofTexture ofxImageTS::whiteBlack(ofImage image) {
    
    int avg;
    ofTexture texture;
    ofPixels copy;
    copy.allocate(image.getWidth(), image.getHeight(), OF_PIXELS_RGB);
    texture.allocate(image);
    for(int i = 0; i < image.getPixels().size()-3; i += 3){
        avg = (image.getPixels()[i] + image.getPixels()[i+1] + image.getPixels()[i+2])/3;
        if(avg >= 128) {
            copy[i] = 254;
            copy[i+1] = 254;
            copy[i+2] = 254;
        }
        else {
            copy[i] = 0;
            copy[i+1] = 0;
            copy[i+2] = 0;
        }
    }
    texture.loadData(copy);
    return texture;
}

void loadImageRaw(string path, int w, int h, ofImage &img) {
    ofFile file(path);
    img.setFromPixels((unsigned char*)file.readToBuffer().getData(), w, h, OF_IMAGE_COLOR);
}

void ofxOpticalFlowLK :: update	( ofImage& source )
{
	update( source.getPixels(), source.width, source.height, source.type );
}

GLuint ofxImGui::loadImage(ofImage& image)
{
    if(!engine) return -1;
    return loadPixels(image.getPixels());
}

void ofxVectorField::setFromImage(ofImage & image) {

    int imgW = image.width;
    int imgH = image.height;
    int imgPixelCount = imgW * imgH;

    if( !bIsAllocated) {

        printf("ofxVectorField not allocated -- allocating automatically using default spacing\n");
        setup(imgW, imgH, OFX_VECFIELD_DEFALT_SPACING);
    }

    // storage for brightness
    unsigned char * imagePixels = image.getPixels();
    unsigned char brightness[imgPixelCount];

    if( image.getPixelsRef().getImageType() == OF_IMAGE_GRAYSCALE) {

        for(int x=0; x<imgW; x++) {
            for(int y=0; y<imgH; y++) {

                int srcPos = y * imgW + x;

                unsigned char b = imagePixels[srcPos];

                brightness[srcPos] = b;
            }
        }

    } else {

        // convert RGB to luma
        unsigned char * imagePixels = image.getPixels();
        unsigned char brightness[imgPixelCount];
        int bpp = image.getPixelsRef().getBytesPerPixel();

        for(int x=0; x<imgW; x++) {
            for(int y=0; y<imgH; y++) {

                int dstPos = y * imgW + x;
                int srcPos = dstPos * 3;

                unsigned char r = imagePixels[srcPos];
                unsigned char g = imagePixels[srcPos+1];
                unsigned char b = imagePixels[srcPos+2];

                brightness[dstPos] = ( r * 0.299) + (.587 * g) + (.114 * b);
            }
        }
    }

    // detetermine the vector at each position in the image

    for(int x=1; x<width-1; x++) {
        for(int y=1; y<height-1; y++) {

            int vecPos = y * width + x;
            char areaPixels[9];

            // loop through the area pixels
            for(int i=-1; i<=1; i++) {
                for(int j=-1; j<=1; j++) {

                    // determine where to read from in the area (not optimized)
                    int readPos = ((y + j) * spacing * imgW + (x + i)*spacing) * 3;

                    unsigned char R = imagePixels[readPos];
                    unsigned char G = imagePixels[readPos+1];
                    unsigned char B = imagePixels[readPos+2];

                    char BR = (0.299 * R) + (.587 * G) + (.114 * B);

                    int writePos = (j+1) * 3 + (i + 1);

                    areaPixels[writePos] = BR;
                }
            }

            float dX = (areaPixels[0] + areaPixels[3] + areaPixels[6])/3 - (areaPixels[2] + areaPixels[5] + areaPixels[8])/3;
            float dY = (areaPixels[0] + areaPixels[1] + areaPixels[2])/3 - (areaPixels[6] + areaPixels[7] + areaPixels[8])/3;

            vectorField[vecPos].x = dY;
            vectorField[vecPos].y = dX;
        }
    }

    // copy pixels to the top and bottom

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

        int dstPos = x;
        int srcPos = x + width;

        vectorField[dstPos].x = vectorField[srcPos].x;
        vectorField[dstPos].y = vectorField[srcPos].y;

        dstPos = x + (height-1)*width;
        srcPos = x + (height-2)*width;

        vectorField[dstPos].x = vectorField[srcPos].x;
//.........这里部分代码省略.........

void ofxCorrectPerspective::Rectify_Image(ofImage & my_image,double focal_length,double sensor_width, double & alpha, double & beta){
    resize_image=1; //To Enable or Disable Resize

	//Rescale Image to be Max in 1000px
	if (resize_image && max(my_image.width,my_image.height)>1000)
    {
        float s=float(1000)/max(my_image.width,my_image.height);
        my_image.resize(floor(my_image.width*s),floor(my_image.height*s));
    }

    float f=focal_length*(float)max(my_image.width,my_image.height)/sensor_width;
    K.set(f,0.0,0.0,0.0,f,0.0,0.0,0.0,1.0);
    center.set(double(my_image.width)/2.0,double(my_image.height)/2.0);
    if (talk) cout << K;

    my_img_gray=my_image;
    my_img_gray.setImageType(OF_IMAGE_GRAYSCALE);

    //Converting Image to Image Double//
    image_double dub_image;
    ntuple_list lsd_out;
    unsigned int w=my_img_gray.width;
    unsigned int h=my_img_gray.height;
    unsigned char * imgP=my_img_gray.getPixels();

    // LSD parameters start
    double scale = 0.8;       // Scale the image by Gaussian filter to 'scale'.
    double sigma_scale = 0.6; // Sigma for Gaussian filter is computed as sigma = sigma_scale/scale.
    double quant = 2.0;       // Bound to the quantization error on the gradient norm.
    double ang_th = 22.5;     // Gradient angle tolerance in degrees.
    double eps = 0.0;         // Detection threshold, -log10(NFA).
    double density_th = 0.7;  // Minimal density of region points in rectangle.
    int n_bins = 1024;        // Number of bins in pseudo-ordering of gradient modulus.
    double max_grad = 255.0;  // Gradient modulus in the highest bin. The default value corresponds to the highest
                              // gradient modulus on images with gray levels in [0,255].
    // LSD parameters end

    bool verbose=0;

    dub_image = new_image_double(w,h);
    double px=0;
    cout << "\n--------\nInput data being written to image buffer \n";
    for(int j=0;j<(w*h);j++){
        px=imgP[j];
        dub_image->data[j] = px;
        if (verbose){
            cout << " " << dub_image->data[j];
        }
    }
    // Call LSD //
    lsd_out = LineSegmentDetection( dub_image, scale, sigma_scale, quant, ang_th, eps,
                               density_th, n_bins, max_grad, NULL );
    cout << "LSD has done it's thing!\n";
    if (talk) cout << "Number of Lines: "<< lsd_out->size << "Number of Dimensions: " << lsd_out->dim << "\n";

    if (verbose)
    {
    cout << "LSD Values: " << lsd_out->values[0] << " " << lsd_out->values[1] <<" " <<  lsd_out->values[2] <<" " <<  lsd_out->values[3] <<" " <<  lsd_out->values[4] <<" " <<  lsd_out->values[5] << "\n";
    }

    //Sorting in (Value, Index) pairs
        //http://stackoverflow.com/questions/1577475/c-sorting-and-keeping-track-of-indexes
    std::vector<mypair> line_lengths;
    double sqd_distance;

    mesh.setMode(OF_PRIMITIVE_LINES);
    mesh.enableColors();

    ofVec3f first(0.0,0.0,0.0);
    ofVec3f second(0.0,0.0,0.0);
    double x1,x2,y1,y2;

    for(int j=0;j<(lsd_out->size*lsd_out->dim);j=j+5){
        x1=lsd_out->values[j];
        y1=lsd_out->values[j+1];
        x2=lsd_out->values[j+2];
        y2=lsd_out->values[j+3];
        sqd_distance=(x2-x1)*(x2-x1) + (y2-y1)*(y2-y1);

        line_lengths.push_back(make_pair(sqd_distance,j));

        //To Draw as Primitive Lines//
        /*first.set(x2,y2,0.0);
        second.set(x1,y1,0.0);
        mesh.addVertex(first);
        mesh.addColor(ofFloatColor(1.0, 0.0, 0.0));
        mesh.addVertex(second);
        mesh.addColor(ofFloatColor(1.0, 0.0, 0.0));*/
        //Lines Added, will be drawn//
       }
    sort(line_lengths.begin(),line_lengths.end());
    reverse(line_lengths.begin(), line_lengths.end());

    if (talk) cout << line_lengths[0].first << " " << line_lengths[0].second << " " << line_lengths[1].first << " " << line_lengths[1].second << "\n";

    unsigned int maxlines=700;
    unsigned int no_of_lines=min(lsd_out->size,maxlines);
    //Store these Lines pairs in a Matrix, in descending order of Distance
    cout << "Number of Lines: " << no_of_lines << "\n";
    L.resize(4);
//.........这里部分代码省略.........

//------------------------------------------------------------------------------
void ofxIpVideoServerRoute::pushFrame(ofImage& img) {
    pushFrame(img.getPixelsRef());
}

void ckvdTileGrabber::setColorFromFrame(ofImage& frame)
{
    _fixture.setVideoRect(x - width/2, y - height/2, width, height);
    _fixture.setSourceData(frame.getPixels(), frame.width, frame.height, 3);
}

//--------------------------------------------
void ofCairoRenderer::draw(const ofImage & img, float x, float y, float z, float w, float h, float sx, float sy, float sw, float sh) const{
	draw(img.getPixels(),x,y,z,w,h,sx,sy,sw,sh);
}

//--------------------------------------------
void ofCairoRenderer::draw(ofImage & img, float x, float y, float z, float w, float h, float sx, float sy, float sw, float sh){
	ofPixelsRef raw = img.getPixelsRef();
	bool shouldCrop = sx != 0 || sy != 0 || sw != w || sh != h;
	ofPixels cropped;
	if(shouldCrop) {
		cropped.allocate(sw, sh, raw.getImageType());
		raw.cropTo(cropped, sx, sy, sw, sh);
	}
	ofPixelsRef pix = shouldCrop ? cropped : raw;

	pushMatrix();
	translate(x,y,z);
	scale(w/pix.getWidth(),h/pix.getHeight());
	cairo_surface_t *image;
	int stride=0;
	int picsize = pix.getWidth()* pix.getHeight();
	unsigned char *imgPix = pix.getPixels();

	static vector<unsigned char> swapPixels;

	switch(pix.getImageType()){
	case OF_IMAGE_COLOR:
#ifdef TARGET_LITTLE_ENDIAN
		swapPixels.resize(picsize * 4);

		for(int p= 0; p<picsize; p++) {
			swapPixels[p*4] = imgPix[p*3 +2];
			swapPixels[p*4 +1] = imgPix[p*3 +1];
			swapPixels[p*4 +2] = imgPix[p*3];
		}
#else
		swapPixels.resize(picsize * 4);

		for(int p= 0; p<picsize; p++) {
			swapPixels[p*4] = imgPix[p*3];
			swapPixels[p*4 +1] = imgPix[p*3 +1];
			swapPixels[p*4 +2] = imgPix[p*3 +2];
		}
#endif
		stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, pix.getWidth());
		image = cairo_image_surface_create_for_data(&swapPixels[0], CAIRO_FORMAT_RGB24, pix.getWidth(), pix.getHeight(), stride);
		break;
	case OF_IMAGE_COLOR_ALPHA:
#ifdef TARGET_LITTLE_ENDIAN
		swapPixels.resize(picsize * 4);

		for(int p= 0; p<picsize; p++) {
			swapPixels[p*4] = imgPix[p*4+2];
			swapPixels[p*4 +1] = imgPix[p*4+1];
			swapPixels[p*4 +2] = imgPix[p*4];
			swapPixels[p*4 +3] = imgPix[p*4+3];
		}
		stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, pix.getWidth());
		image = cairo_image_surface_create_for_data(&swapPixels[0], CAIRO_FORMAT_ARGB32, pix.getWidth(), pix.getHeight(), stride);
#else
		stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, pix.getWidth());
		image = cairo_image_surface_create_for_data(pix.getPixels(), CAIRO_FORMAT_ARGB32, pix.getWidth(), pix.getHeight(), stride);
#endif
		break;
	case OF_IMAGE_GRAYSCALE:
		swapPixels.resize(picsize * 4);

		for(int p= 0; p<picsize; p++) {
			swapPixels[p*4] = imgPix[p];
			swapPixels[p*4 +1] = imgPix[p];
			swapPixels[p*4 +2] = imgPix[p];
		}
		stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, pix.getWidth());
		image = cairo_image_surface_create_for_data(&swapPixels[0], CAIRO_FORMAT_RGB24, pix.getWidth(), pix.getHeight(), stride);
		break;
	case OF_IMAGE_UNDEFINED:
	default:
		ofLogError("ofCairoRenderer") << "draw(): trying to draw undefined image type " << pix.getImageType();
		popMatrix();
		return;
		break;
	}
	cairo_set_source_surface (cr, image, 0,0);
	cairo_paint (cr);
	cairo_surface_flush(image);
	cairo_surface_destroy (image);
	popMatrix();
}

//----------------------------------------------------------
void ofGLRenderer::draw(ofImage & image, float x, float y, float z, float w, float h){
	if(image.isUsingTexture()){
		image.getTextureReference().draw(x,y,z,w,h);
	}
}

//--------------------------------------------------------------
void ofxAEOverlay::setImg(ofImage & i){
    img.clear();
    img.setFromPixels(i.getPixelsRef());
    img.update();
}