Here you will find all the necessary resources for the computer vision input.
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Watch the presentation and write down questions and thoughts that come to your mind! We can discuss them later in the Zoom conference.
📼IAD-CV-Introduction Video
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| title | Full Sketch for Motion Detection |
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| Code Block |
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| import processing.video.*;
import gab.opencv.*;
import org.opencv.core.*;
Capture cam;
OpenCV opencv;
PImage last = null;
void setup() {
size(640, 480);
String[] inputDevices = Capture.list();
cam = new Capture(this, 640, 480, inputDevices[0]);
opencv = new OpenCV(this, 640, 480);
cam.start();
}
void draw() {
background(0);
if(cam.available())
cam.read();
opencv.loadImage(cam);
if(last != null) {
opencv.diff(last);
opencv.threshold(40);
}
last = cam.copy();
float count = Core.countNonZero(opencv.getGray());
float difference = count / (cam.width * cam.height) * 100;
if(difference > 10.0) {
println(millis() + "WARNING!");
}
image(opencv.getSnapshot(), 0, 0);
fill(0, 255, 255);
text("Difference: " + difference, 20, 20);
} |
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Task 6
Use Contour Detection to implement a multi-user drawing system.
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| title | Blobdetection Example |
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| Code Block |
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| import processing.video.*;
import gab.opencv.*;
Capture cam;
OpenCV opencv;
PImage last = null;
void setup() {
size(640, 480);
String[] inputDevices = Capture.list();
cam = new Capture(this, 640, 480, inputDevices[0]);
cam.start();
opencv = new OpenCV(this, 640, 480);
}
void draw() {
background(0);
if (cam.available())
cam.read();
opencv.loadImage(cam);
opencv.threshold(240);
blendMode(BLEND);
image(cam, 0, 0);
noFill();
stroke(255, 0, 0);
strokeWeight(3);
for (Contour contour : opencv.findContours()) {
contour.draw();
}
} |
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Deep Vision Live Input (15:00 - 16:00)
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