141 lines
3.9 KiB
Plaintext
141 lines
3.9 KiB
Plaintext
//---------------------------------------------------------
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//
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// author: thomas diewald
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// date: 06.09.2011
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//
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// example how to use diewald_CV_kit.blobdetection.
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//
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// -------------------------------------------------------
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// interaction:
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//
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// mouseX - defines the number of polyline-simplification steps
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//---------------------------------------------------------
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import java.util.Locale;
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import diewald_CV_kit.libraryinfo.*;
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import diewald_CV_kit.utility.*;
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import diewald_CV_kit.blobdetection.*;
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PFont font;
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PImage sample_img;
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int size_x, size_y;
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BlobDetector blob_detector;
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public void setup() {
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String image_path = sketchPath+"/data/";
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sample_img = loadImage(image_path + "diewald_CV_kit_hand_640x480.jpg");
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size_x = sample_img.width;
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size_y = sample_img.height;
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size(size_x, size_y);
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sample_img.loadPixels();
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blob_detector = new BlobDetector( size_x, size_y);
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blob_detector.setResolution(1);
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blob_detector.computeContours(true);
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blob_detector.computeBlobPixels(true);
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blob_detector.setMinMaxPixels(10*10, size_x*size_y);
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blob_detector.setBLOBable(new BLOBable_Hands(this, sample_img));
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font = createFont("Calibri", 14);
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textFont(font);
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frameRate(200);
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}
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public void draw() {
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background(255);
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// blob_detector.takeEveryNthPixel((int) map(mouseX, 0, width, 0, 20));
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image(sample_img, 0, 0);
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blob_detector.setResolution(1);
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//update the blob_detector with the new pixelvalues
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blob_detector.update();
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// get a list of all the blobs
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ArrayList<Blob> blob_list = blob_detector.getBlobs();
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// iterate through the blob_list
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for (int blob_idx = 0; blob_idx < blob_list.size(); blob_idx++ ) {
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// get the current blob from the blob-list
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Blob blob = blob_list.get(blob_idx);
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// System.out.println("number of pixels = " +blob.getNumberOfPixels() );
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// get the list of all the contours from the current blob
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ArrayList<Contour> contour_list = blob.getContours();
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// iterate through the contour_list
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for (int contour_idx = 0; contour_idx < contour_list.size(); contour_idx++ ) {
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// get the current contour from the contour-list
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Contour contour = contour_list.get(contour_idx);
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// get the current boundingbox from the current contour
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BoundingBox bb = contour.getBoundingBox();
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// handle the first contour (outer contour = contour_idx == 0) different to the inner contours
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if ( contour_idx == 0) {
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// draw the boundingbox
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drawBoundingBox(bb, color(0), 1);
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// draw the blob-id
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fill(0);
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text("blob["+blob_idx+"]", bb.xMin(), bb.yMin()- textDescent()*2);
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// draw the contour
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drawContour(contour.getPixels(), color(255, 0, 0), color(0, 255, 0, 50), !true, 1);
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// example how to simplify a contour
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int repeat_simplifying = (int) map(mouseX, 0, width, 0, 50);
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// can improve speed, if the contour is needed for further work
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ArrayList<Pixel> contour_simple = Polyline.SIMPLIFY(contour, 2, 1);
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// repeat the simplifying process a view more times
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for (int simple_cnt = 0; simple_cnt < repeat_simplifying; simple_cnt++) {
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contour_simple= Polyline.SIMPLIFY(contour_simple, 2, simple_cnt);
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}
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// draw the simplified contour
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drawContour(contour_simple, color(0, 200, 200), color(0, 0, 200, 50), false, 2);
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drawPoints(contour_simple, color(0, 200, 200), 11);
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// generate a convex hull object
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ConvexHullDiwi convex_hull = new ConvexHullDiwi();
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// calculate the convex hull, based on the contour-list
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convex_hull.update(contour_simple);
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//draw the convex hull
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drawConvexHull(convex_hull, color(0, 255, 0), 2);
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drawConvexHullPoints(convex_hull, color(0, 255, 0), 25);
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}
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else {
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// we don't handle inner contours here
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}
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}
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}
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fill(255, 200);
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noStroke();
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rect(0, 0, 120, 50);
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printlnNumberOfBlobs(blob_detector);
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printlnFPS();
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}
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