Reading pixels of image

Question

Hello
I need to know what I must to use as methods and packages in order to extracte the exact informations means the exact value of pixels from the image with gray scale and image with colors RGB.

Answer 1

Here's how to read one pixel from an image:
  public int getOnePixel(BufferedImage bi, int x, int y)
    // Get one pixel.
    if (bi != null)
      return bi.getRGB(x, y);
    else
      System.out.println("BufferedImage is null");
      return -1;
  }Here's how to create an image from a set of pixels:
  public BufferedImage createBufferedImage(int w, int h, int [] pixels)
    BufferedImage bi = new BufferedImage(w,h,BufferedImage.TYPE_INT_RGB);
    WritableRaster wr = bi.getRaster();
    wr.setPixels(0,0,w,h,pixels);
    return bi;
  }Hope that helps. If you need more help, email me at [email protected]