diewald_CV_kit.blobdetection
Interface BLOBable

public interface BLOBable

the interface Blobable can be seen as a "function pointer".
the method "isBLOBable()" is called for each pixel of an image, to check if it belongs to a blob or not.
so this should be a convenient way, to make your own conditions for blobs.

• here's an example of the default condition, integrated in the imageprocessing class:
  

  final class BLOBable_DEFAULT implements BLOBable{
    int width_, height_;
    String name;
  
    //@Override
    public final boolean isBLOBable(int index, int x, int y) {
      return false;
    }
    
    //@Override
    public final void updateOnFrame( int width, int height) {
      width_ = width;
      height_ = height;
      System.out.println("default");
    }
    
    //@Override
    public final void init() {
      name = this.getClass().getSimpleName(); 
      System.out.println("default = "+name);
    }
  }
   

• Here's another example, that can just be copied into your sketch

  public final class BLOBable_A implements BLOBable{
    int width_, height_;
    private float mousex_val_;
    private String name_; 
    
    private PApplet papplet_;
    private PImage img_;
    
    public BLOBable_A(PApplet papplet, PImage img){
      papplet_ = papplet;
      img_ = img;
    }
    //@Override
    public final void init() {
      name_ = this.getClass().getSimpleName(); 
    }
    
    //@Override
    public final void updateOnFrame(int width, int height) {
      width_ = width;
      height_ = height;
      mousex_val_ = PApplet.map(papplet_.mouseX, 0, papplet_.width,  0, 100);
    }
    //@Override
    public final boolean isBLOBable(int pixel_index, int x, int y) {    
      return (PixelColor.brighntess(img_.pixels[pixel_index]) < mousex_val_);
    }
   
  }
   

Author:

thomas diewald (c) 2011

Method Summary

void	init() init() is called when assigning a BLOBable-instance to a blobdetection.
boolean	isBLOBable(int pixel_index, int x, int y) checks the current pixel-index for beeing part of the blob or not.
void	updateOnFrame(int width, int height) updateOnFrame() is called every time, before the blobdetection starts to analyse.

Method Detail

isBLOBable

boolean isBLOBable(int pixel_index,
                   int x,
                   int y)

checks the current pixel-index for beeing part of the blob or not. isBLOBable() is called for every pixel!

Parameters:

pixel_index - the current pixelindex which is checked.

x - current x-position of the detection (column).

y - current x-position of the detection (row).

Returns:

true, if the pixel is part of the blob. false if not.

updateOnFrame

void updateOnFrame(int width,
                   int height)

updateOnFrame() is called every time, before the blobdetection starts to analyse.

Parameters:

width - width of the whole frame (video, image, etc.)

height - height of the whole frame (video, image, etc.)

init

void init()

init() is called when assigning a BLOBable-instance to a blobdetection.