![fill(0, 200, 200);
text("blob["+blob_idx+"]", bb.xMin(), bb.yMin()- textDescent()*2);
}
// draw the contour
drawContour(contour.getPixels(), color(255, 0, 0), color(255, 0, 255, 100), draw_filled_blobs,
1);
}
else {
// draw the inner contours, if they have more than 20 vertices
if ( contour.getPixels().size() > 20) {
drawContour(contour.getPixels(), color(255, 150, 0), color(0, 100), false, 1);
}
}
}
}
// simple information about framerate, and number of detected blobs
fill(0, 200);
noStroke();
rect(0, 0, 150, 50);
printlnNumberOfBlobs(blob_detector);
printlnFPS();
}](https://image.slidesharecdn.com/code-170227173112/85/Code-3-320.jpg)
Code
- 1. //--------------------------------------------------------- // // author: thomas diewald // date: 06.09.2011 // // example how to use diewald_CV_kit.blobdetection. // // ------------------------------------------------------- // interaction: // // mouseX - defines the brightness treshhold // dragged mouse - drag a rectangle to define the detection area // // key 'UP' - lower resolution // key 'DOWN' - higher resolution // key 'b' - draw boundingsboxes of blobs // key 'f' - fill blobs //--------------------------------------------------------- import diewald_CV_kit.libraryinfo.*; import diewald_CV_kit.utility.*; import diewald_CV_kit.blobdetection.*; import java.util.ArrayList; PFont font; PImage sample_img; int size_x, size_y; BlobDetector blob_detector; BoundingBox detection_area; int detection_resolution = 1; boolean draw_blobs_boundingsbox = true; boolean draw_filled_blobs = true; public void setup() { size(640, 480); // sample_img = loadImage(image_path + "imageprocessing_gradient_v7_600x600.jpg"); sample_img = loadImage("imageprocessing_gradient_v9_640x480.jpg"); size_x = sample_img.width; size_y = sample_img.height; //size(size_x, size_y); size(640, 480); sample_img.loadPixels(); blob_detector = new BlobDetector(size_x, size_y); blob_detector.setResolution(detection_resolution); blob_detector.computeContours(true); blob_detector.computeBlobPixels(!true); blob_detector.setMinMaxPixels(10*10, size_x*size_y); blob_detector.setBLOBable(new BLOBable_GRADIENT(this, sample_img)); detection_area = new BoundingBox(0, 0, size_x, size_y);
- 2. blob_detector.setDetectingArea(detection_area); font = createFont("Calibri", 14); textFont(font); frameRate(200); } public void draw() { background(255); image(sample_img, 0, 0); // draw the detection-area stroke(0, 0, 0); strokeWeight(1); noFill(); rect(detection_area.xMin(), detection_area.yMin(), detection_area.xSize()-1, detection_area.ySize()-1); // set resolution - improves speed a lot blob_detector.setResolution(detection_resolution); //update the blob-detector with the new pixelvalues blob_detector.update(); // get a list of all the blobs ArrayList<Blob> blob_list = blob_detector.getBlobs(); // iterate through the blob_list for (int blob_idx = 0; blob_idx < blob_list.size(); blob_idx++ ) { // get the current blob from the blob-list Blob blob = blob_list.get(blob_idx); // get the list of all the contours from the current blob ArrayList<Contour> contour_list = blob.getContours(); // iterate through the contour_list for (int contour_idx = 0; contour_idx < contour_list.size(); contour_idx++ ) { // get the current contour from the contour-list Contour contour = contour_list.get(contour_idx); // get the current boundingbox from the current contour BoundingBox bb = contour.getBoundingBox(); // handle the first contour (outer contour = contour_idx == 0) different to the inner contours if ( contour_idx == 0) { // draw the boundingbox and blob-id as text if ( draw_blobs_boundingsbox ) { drawBoundingBox(bb, color(0, 200, 200), 1);
- 3. fill(0, 200, 200); text("blob["+blob_idx+"]", bb.xMin(), bb.yMin()- textDescent()*2); } // draw the contour drawContour(contour.getPixels(), color(255, 0, 0), color(255, 0, 255, 100), draw_filled_blobs, 1); } else { // draw the inner contours, if they have more than 20 vertices if ( contour.getPixels().size() > 20) { drawContour(contour.getPixels(), color(255, 150, 0), color(0, 100), false, 1); } } } } // simple information about framerate, and number of detected blobs fill(0, 200); noStroke(); rect(0, 0, 150, 50); printlnNumberOfBlobs(blob_detector); printlnFPS(); }