Can not run Blobs samples from OpenCV in processing 1.5.1
in
Contributed Library Questions
•
9 months ago
Here below is the code of the blob samples:
- import hypermedia.video.*;
- OpenCV opencv;
- int w = 320;
- int h = 240;
- int threshold = 80;
- boolean find=true;
- PFont font;
- void setup() {
- size( w*2+30, h*2+30 );
- opencv = new OpenCV( this );
- opencv.capture(w,h);
- font = loadFont( "AndaleMono.vlw" );
- textFont( font );
- println( "Drag mouse inside sketch window to change threshold" );
- println( "Press space bar to record background image" );
- }
- void draw() {
- background(0);
- opencv.read();
- //opencv.flip( OpenCV.FLIP_HORIZONTAL );
- image( opencv.image(), 10, 10 ); // RGB image
- image( opencv.image(OpenCV.GRAY), 20+w, 10 ); // GRAY image
- image( opencv.image(OpenCV.MEMORY), 10, 20+h ); // image in memory
- opencv.absDiff();
- opencv.threshold(threshold);
- image( opencv.image(OpenCV.GRAY), 20+w, 20+h ); // absolute difference image
- // working with blobs
- Blob[] blobs = opencv.blobs( 100, w*h/3, 20, true );
- noFill();
- pushMatrix();
- translate(20+w,20+h);
- for( int i=0; i<blobs.length; i++ ) {
- Rectangle bounding_rect = blobs[i].rectangle;
- float area = blobs[i].area;
- float circumference = blobs[i].length;
- Point centroid = blobs[i].centroid;
- Point[] points = blobs[i].points;
- // rectangle
- noFill();
- stroke( blobs[i].isHole ? 128 : 64 );
- rect( bounding_rect.x, bounding_rect.y, bounding_rect.width, bounding_rect.height );
- // centroid
- stroke(0,0,255);
- line( centroid.x-5, centroid.y, centroid.x+5, centroid.y );
- line( centroid.x, centroid.y-5, centroid.x, centroid.y+5 );
- noStroke();
- fill(0,0,255);
- text( area,centroid.x+5, centroid.y+5 );
- fill(255,0,255,64);
- stroke(255,0,255);
- if ( points.length>0 ) {
- beginShape();
- for( int j=0; j<points.length; j++ ) {
- vertex( points[j].x, points[j].y );
- }
- endShape(CLOSE);
- }
- noStroke();
- fill(255,0,255);
- text( circumference, centroid.x+5, centroid.y+15 );
- }
- popMatrix();
- }
- void keyPressed() {
- if ( key==' ' ) opencv.remember();
- }
- void mouseDragged() {
- threshold = int( map(mouseX,0,width,0,255) );
- }
- public void stop() {
- opencv.stop();
- super.stop();
- }
But when I run it, it shows error like this:
Cannot find a class or type named "Rectangle"
Anyone knows how to fix it?
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