Quality of image

Question

im searching for help!
i draw a mandelbrot fractal into some image files, that works great, but how can i get a better quality??
this is my code for the drawing, can someone help me, to get it?
please!!
this is my colormodel and my offpaint method!
// fill the colour table with silly color gradients
for (int index = 0; index < NUM_COLORS; ++index)
blue [index] = (byte) (64 + index % 64 * 3);
green[index] = (byte) ( 32 + index % 32 * 6);
red [index] = (byte) ( 252 - index % 64 * 4);
// add black to the table and create the colour model
blue[NUM_COLORS] = green[NUM_COLORS] = red[NUM_COLORS] = 0;
color_table = new IndexColorModel(8, NUM_COLORS + 1, blue, green, red);
public void offpaint (){
System.out.println("Ich war im offpaint()");
int width = w;//getWidth(); // component width
int height = h;//getHeight(); // component height
if (image == null || image.getWidth() != width ||
image.getHeight() != height)
byte pixels[] = new byte[width * height];
DataBufferByte buffer; // byte array buffer
WritableRaster raster; // image raster
int x, y; // pixel position
for (x = 0; x < width; ++x) // fill byte array
for (y = 0; y < height; ++y)
pixels[(height - 1 ... .....);
// use the byte array to fill the PackedRaster and create the
// BufferedImage from the WritableRaster and the ColorModel.
buffer = new DataBufferByte(pixels, pixels.length);
raster = Raster.createPackedRaster(buffer, width, height, 8, null);
image = new BufferedImage(color_table, raster, false, null);
offscreenGraphics = image.getGraphics();
offscreenGraphics.drawImage(image, 0, 0, this); // finally: draw it
// write the offscreen image on disk
File output;
File = new File(".\\Image\\mandel_X"+start_x+"_Y_"+start_y+".png");
try {
ImageIO.write(image, "PNG", outputFile);
} catch (Exception e) {
System.err.println(e.getMessage());
}

Answer 1

What, exactly, are you trying to do?