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mbanzimbanzi
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added red_tracking
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2 files changed

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lines changed

2 files changed

+240
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lines changed

‎red_tracking.pde

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/**
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* Brightness Tracking
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* by Daniel Shiffman.
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*
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* Tracks the brightest pixel in the video.
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* Click the mouse to select a different color.
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*
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* Created 2 May 2005
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* modified to track bright red
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*/
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import processing.video.*;
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// Variable for capture device
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Capture video;
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color trackColor;
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boolean imageFlag = false;
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boolean printImage = false;
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int w = 400;
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int h = 300;
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void setup()
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{
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background(255);
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size(w , h);
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frameRate(25);
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colorMode(RGB,255,255,255,100);
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// Using the default capture device
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video = new Capture(this, w, h, 12);
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trackColor = color(255,0,0); // Start off tracking for white
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//noFill();
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smooth();
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strokeWeight(10.0);
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stroke(0);
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}
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void captureEvent(Capture camera)
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{
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camera.read();
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}
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void draw()
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{
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//background(255);
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//loadPixels();
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// Draw the video image on the background
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if (imageFlag) {
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image(video,0,0);
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}
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// Local variables to track the color
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float closestDiff = 500.0f;
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int closestX = 0;
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int closestY = 0;
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// Begin loop to walk through every pixel
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for ( int x = 0; x < video.width; x++) {
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for ( int y = 0; y < video.height; y++) {
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int loc = x + y*video.width;
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// What is current color
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color currentColor = video.pixels[loc];
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float r1 = red(currentColor);
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float g1 = green(currentColor);
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float b1 = blue(currentColor);
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float r2 = red(trackColor);
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float g2 = green(trackColor);
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float b2 = blue(trackColor);
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// Using euclidean distance to compare colors
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float d = dist(r1,g1,b1,r2,g2,b2);
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//float d = dist(r1,0,0,r2,0,0);
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// If current color is more similar to tracked color than
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// closest color, save current location and current difference
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if (d < closestDiff) {
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//println(closestDiff);
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closestDiff = d;
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closestX = x;
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closestY = y;
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}
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}
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}
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// Draw a circle at the tracked pixel
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if (closestDiff < 120) {
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if (imageFlag) {
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point(closestX,closestY);
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}
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else {
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point(400-closestX,closestY);
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}
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}
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if (printImage) {
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saveFrame("image-######.jpg");
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printImage = false;
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}
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}
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void mousePressed() {
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// Save color where the mouse is clicked in trackColor variable
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//int loc = mouseX + mouseY*video.width;
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//trackColor = video.pixels[loc];
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}
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void keyPressed() {
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if (keyCode == ENTER) {
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printImage = true;
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}
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if (key == 'e') {
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if (imageFlag) {
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imageFlag = false;
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background(255);
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}
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else {
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imageFlag = true;
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}
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}
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}
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‎red_tracking/red_tracking.pde

+120
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,120 @@
1+
/**
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* Brightness Tracking
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* by Daniel Shiffman.
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*
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* Tracks the brightest pixel in the video.
6+
* Click the mouse to select a different color.
7+
*
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* Created 2 May 2005
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* modified to track bright red
10+
*/
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import processing.video.*;
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// Variable for capture device
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Capture video;
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color trackColor;
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boolean imageFlag = false;
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boolean printImage = false;
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int w = 400;
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int h = 300;
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void setup()
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{
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background(255);
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size(w , h);
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frameRate(25);
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colorMode(RGB,255,255,255,100);
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// Using the default capture device
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video = new Capture(this, w, h, 12);
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trackColor = color(255,0,0); // Start off tracking for white
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//noFill();
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smooth();
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strokeWeight(10.0);
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stroke(0);
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}
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void captureEvent(Capture camera)
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{
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camera.read();
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}
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void draw()
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{
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//background(255);
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//loadPixels();
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// Draw the video image on the background
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if (imageFlag) {
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image(video,0,0);
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}
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// Local variables to track the color
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float closestDiff = 500.0f;
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int closestX = 0;
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int closestY = 0;
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// Begin loop to walk through every pixel
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for ( int x = 0; x < video.width; x++) {
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for ( int y = 0; y < video.height; y++) {
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int loc = x + y*video.width;
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// What is current color
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color currentColor = video.pixels[loc];
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float r1 = red(currentColor);
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float g1 = green(currentColor);
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float b1 = blue(currentColor);
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float r2 = red(trackColor);
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float g2 = green(trackColor);
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float b2 = blue(trackColor);
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// Using euclidean distance to compare colors
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float d = dist(r1,g1,b1,r2,g2,b2);
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//float d = dist(r1,0,0,r2,0,0);
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// If current color is more similar to tracked color than
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// closest color, save current location and current difference
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if (d < closestDiff) {
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//println(closestDiff);
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closestDiff = d;
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closestX = x;
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closestY = y;
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}
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}
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}
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// Draw a circle at the tracked pixel
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if (closestDiff < 120) {
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if (imageFlag) {
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point(closestX,closestY);
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}
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else {
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point(400-closestX,closestY);
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}
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}
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if (printImage) {
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saveFrame("image-######.jpg");
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printImage = false;
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}
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}
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void mousePressed() {
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// Save color where the mouse is clicked in trackColor variable
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//int loc = mouseX + mouseY*video.width;
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//trackColor = video.pixels[loc];
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}
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void keyPressed() {
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if (keyCode == ENTER) {
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printImage = true;
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}
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if (key == 'e') {
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if (imageFlag) {
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imageFlag = false;
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background(255);
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}
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else {
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imageFlag = true;
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}
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}
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}
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