65 lines
1.4 KiB
Plaintext
65 lines
1.4 KiB
Plaintext
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import gab.opencv.*;
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PImage img;
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OpenCV opencv;
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Histogram histogram;
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int lowerb = 50;
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int upperb = 100;
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void setup() {
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img = loadImage("colored_balls.jpg");
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opencv = new OpenCV(this, img);
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size(opencv.width, opencv.height);
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opencv.useColor(HSB);
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}
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void draw() {
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opencv.loadImage(img);
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image(img, 0, 0);
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opencv.setGray(opencv.getH().clone());
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opencv.inRange(lowerb, upperb);
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histogram = opencv.findHistogram(opencv.getH(), 255);
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image(opencv.getOutput(), 3*width/4, 3*height/4, width/4,height/4);
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noStroke(); fill(0);
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histogram.draw(10, height - 230, 400, 200);
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noFill(); stroke(0);
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line(10, height-30, 410, height-30);
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text("Hue", 10, height - (textAscent() + textDescent()));
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float lb = map(lowerb, 0, 255, 0, 400);
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float ub = map(upperb, 0, 255, 0, 400);
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stroke(255, 0, 0); fill(255, 0, 0);
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strokeWeight(2);
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line(lb + 10, height-30, ub +10, height-30);
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ellipse(lb+10, height-30, 3, 3 );
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text(lowerb, lb-10, height-15);
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ellipse(ub+10, height-30, 3, 3 );
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text(upperb, ub+10, height-15);
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}
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void mouseMoved() {
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if (keyPressed) {
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upperb += mouseX - pmouseX;
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}
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else {
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if (upperb < 255 || (mouseX - pmouseX) < 0) {
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lowerb += mouseX - pmouseX;
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}
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if (lowerb > 0 || (mouseX - pmouseX) > 0) {
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upperb += mouseX - pmouseX;
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}
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}
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upperb = constrain(upperb, lowerb, 255);
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lowerb = constrain(lowerb, 0, upperb-1);
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}
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