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java_FAST+Harris_detector.java
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java_FAST+Harris_detector.java
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import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;
import java.awt.image.MemoryImageSource;
import java.awt.image.PixelGrabber;
import java.io.File;
import java.io.IOException;
import java.net.URL;
/**
* Created with IntelliJ IDEA.
* User: trane91
* Date: 4/18/13
* Time: 12:02 AM
* To change this template use File | Settings | File Templates.
*/
public class Main {
private static final String TAG = Main.class.getSimpleName();
public static void main(String[] args){
if( args.length < 2){
Log.d(TAG, "Image address is null. Please enter image address.");
return;
}
String imageAddress = args[0];
BufferedImage image;
try {
image = ImageIO.read(new File( imageAddress).toURI().toURL());
} catch (IOException e) {
//e.printStackTrace();
Log.d(TAG, "Read image error.");
return;
}
BufferedImage destonationImage = image;
int[][] lightnessArray = new int[image.getHeight()][image.getWidth()];
Log.d(TAG, "Initialize intensity.");
for(int y=0; y<image.getHeight(); y++)
for(int x=0; x<image.getWidth();x++){
int []rgb = getPixelData( image, x, y);
lightnessArray[y][x] = getIntensity(rgb);
}
Log.d(TAG, "Finish initialize intensity.");
int threshold = Integer.parseInt( args[1]);
// 8 связный пиксель
/*for(int y=1; y < image.getHeight()-1; y++)
for(int x=1; x < image.getWidth()-1;x++){
int leftUpCornerAverageLightness = (lightnessArray[y][x-1] +
lightnessArray[y-1][x-1] + lightnessArray[y-1][x]) / 3;
int rightUpCornerAverageLightness = (lightnessArray[y][x+1] +
lightnessArray[y-1][x+1] + lightnessArray[y-1][x]) / 3;
int leftDownCornerAverageLightness = (lightnessArray[y][x-1] +
lightnessArray[y+1][x-1] + lightnessArray[y+1][x]) / 3;
int rightDownCornerAverageLightness = (lightnessArray[y][x+1] +
lightnessArray[y+1][x+1] + lightnessArray[y+1][x]) / 3;
int leftDifference = Math.abs( leftUpCornerAverageLightness - leftDownCornerAverageLightness);
int rightDifference = Math.abs( rightUpCornerAverageLightness - rightDownCornerAverageLightness);
int upDifference = Math.abs( leftUpCornerAverageLightness - rightUpCornerAverageLightness);
int downDifference = Math.abs( leftDownCornerAverageLightness - rightDownCornerAverageLightness);
if ( leftDifference >= threshold || rightDifference >= threshold){
if( upDifference >= threshold || downDifference >= threshold){
Log.d(TAG, "Diff. x: " + x + " y:" + y);
drawPixel( destonationImage.getGraphics(), x, y, 3, Color.RED);
}
}
}*/
int detected[][] = new int[image.getHeight()][image.getWidth()];
int maxLightness = 0;
int minLightness = 255;
int detectedCounter =0;
//16 связный пиксель
for(int y=1; y < image.getHeight()-1; y++)
for(int x=1; x < image.getWidth()-1;x++){
if( maxLightness < lightnessArray[y][x])
maxLightness = lightnessArray[y][x];
if( minLightness > lightnessArray[y][x])
minLightness = lightnessArray[y][x];
int thresholdCounter=0;
int centerLightness = lightnessArray[y][x];
/*//Up line
if( lightnessArray[y-1][x-1] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y-1][x] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y-1][x+1] - centerLightness > threshold)
thresholdCounter++;
//Right line
if( lightnessArray[y-1][x+1] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y][x+1] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y+1][x+1] - centerLightness > threshold)
thresholdCounter++;
//Down line
if( lightnessArray[y+1][x+1] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y+1][x] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y+1][x-1] - centerLightness > threshold)
thresholdCounter++;
//Left line
if( lightnessArray[y-1][x-1] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y][x-1] - centerLightness > threshold)
thresholdCounter++;
if( lightnessArray[y+1][x-1] - centerLightness > threshold)
thresholdCounter++;
if( thresholdCounter > 2){
}*/
int leftLineAverageLightness = (lightnessArray[y-1][x-1] + lightnessArray[y][x-1] + lightnessArray[y+1][x-1]) / 3;
int upLineAverageLightness = (lightnessArray[y-1][x-1] + lightnessArray[y-1][x] + lightnessArray[y-1][x+1]) / 3;
int rightLineAverageLightness = (lightnessArray[y-1][x+1] + lightnessArray[y][x+1] + lightnessArray[y+1][x+1]) / 3;
int downLineAverageLightness = (lightnessArray[y+1][x+1] + lightnessArray[y+1][x] + lightnessArray[y+1][x-1]) / 3;
int leftUpCornerAverageLightness = ( leftLineAverageLightness + upLineAverageLightness ) / 2;
int rightUpCornerAverageLightness = ( upLineAverageLightness + rightLineAverageLightness ) / 2;
int leftDownCornerAverageLightness = ( leftLineAverageLightness + downLineAverageLightness ) / 2;
int rightDownCornerAverageLightness = ( rightLineAverageLightness + downLineAverageLightness ) / 2;
int leftDifference = Math.abs( leftUpCornerAverageLightness - leftDownCornerAverageLightness);
int rightDifference = Math.abs( rightUpCornerAverageLightness - rightDownCornerAverageLightness);
int upDifference = Math.abs( leftUpCornerAverageLightness - rightUpCornerAverageLightness);
int downDifference = Math.abs( leftDownCornerAverageLightness - rightDownCornerAverageLightness);
detected[y][x] = 0;
if ( leftDifference >= threshold || rightDifference >= threshold)
if( upDifference >= threshold || downDifference >= threshold){
detected[y][x] = 1;
detectedCounter++;
drawPixel( destonationImage.getGraphics(), x, y, 3, Color.RED);
}
if( detected[y][x] != 1 && (upDifference >= threshold || downDifference >= threshold) )
if ( leftDifference >= threshold || rightDifference >= threshold){
detected[y][x] = 1;
detectedCounter++;
drawPixel( destonationImage.getGraphics(), x, y, 3, Color.RED);
}
}
/*int drawPixelCounter = 0;
for(int y=1; y < image.getHeight()-1; y++)
for(int x=1; x < image.getWidth()-1;x++){
if( detected[y][x] == 1){
*//*boolean flag = true;
Log.d(TAG, "Detected x = " + x + " y = " + y);
for(int y1 = y-1; y1 <= y; y1++)
for(int x1 = x-1; x1 <= x+1; x1++)
if( detected[y1][x1] == 1){
flag = false;
break;
}
if(flag){
drawPixelCounter++;
drawPixel( destonationImage.getGraphics(), x, y, 3, Color.RED);
}*//*
if( detected[y-1][x-1] == 1 ||
detected[y-1][x] == 1 ||
detected[y-1][x+1] == 1 ||
detected[y][x-1] == 1 ||
detected[y][x+1] == 1){
drawPixelCounter++;
drawPixel( destonationImage.getGraphics(), x, y, 3, Color.RED);
}
}
}*/
Log.d(TAG, "Max lighntess: " + maxLightness + " Min lightness: " + minLightness + " Detected counter: " + detectedCounter);
//Log.d(TAG, "Draw pixel counter: " + drawPixelCounter);
JFrame frame = new JFrame();
frame.setSize(image.getWidth(),image.getHeight());
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new JLabel(new ImageIcon( destonationImage)));
frame.show();
}
public static void drawPixel(Graphics g, int x, int y, int size, Paint color){
Graphics2D ga = (Graphics2D)g;
Shape circle = new Ellipse2D.Float(x, y, size, size);
ga.setPaint(color);
ga.draw(circle);
ga.setPaint(color);
ga.fill(circle);
}
/*
* int[][] array = {
{ 79, 85, 73},
{ 126, 132, 120},
{ 127, 133, 121},
{ 126, 132, 122},
{ 144, 150, 140},
{ 140, 146, 136},
{ 143, 151, 140},
{ 146, 154, 143},
{ 127, 135, 124},
{ 128, 136, 125},
{ 128, 136, 125},
{ 78, 86, 75}};*/
/*
* int[][] array2 = {
{ 91, 100, 83},
{ 93, 102, 85},
{ 51, 103, 88},
{ 94, 102, 87},
{ 78, 84, 72},
{ 79, 85, 73},
{ 78, 86, 75},
{ 77, 85, 74},
{ 49, 57, 46},
{ 50, 58, 45},
{ 50, 58, 43},
{ 90, 97, 81}
};*/
public static void res(int [][] array){
int length = array.length;
StringBuilder sb =new StringBuilder();
sb.append("Lightness array: ");
int max =0, min = 255, sum = 0;
for(int i=0; i < length; i++){
sb.append( getLightness( array[i]) + ",");
if( min > getLightness( array[i]))
min = getLightness( array[i]);
if( max < getLightness( array[i]))
max = getLightness( array[i]);
sum += getLightness( array[i]);
}
sum = sum / array.length;
Log.d(TAG, sb.toString());
Log.d(TAG, "Max: " + max + " Min: " + min + " Threshold: " + (max - min) + " Sum: " + sum);
sb.setLength(0);
sb.append("Intensity array: ");
max = 0;
min = 255;
sum = 0;
for(int i=0; i < length; i++){
sb.append( getIntensity( array[i]) + ",");
if( min > getIntensity( array[i]))
min = getIntensity( array[i]);
if( max < getIntensity( array[i]))
max = getIntensity( array[i]);
sum += getIntensity( array[i]);
}
sum = sum / array.length;
Log.d(TAG, sb.toString());
Log.d(TAG, "Max: " + max + " Min: " + min + " Threshold: " + (max - min) + " Sum: " + sum);
sb.setLength(0);
sb.append("GS array: ");
max = 0;
min = 255;
sum = 0;
for(int i=0; i < length; i++){
sb.append( getGS( array[i]) + ",");
if( min > getGS( array[i]))
min = getGS( array[i]);
if( max < getGS( array[i]))
max = getGS( array[i]);
sum += getGS( array[i]);
}
sum = sum / array.length;
Log.d(TAG, sb.toString());
Log.d(TAG, "Max: " + max + " Min: " + min + " Threshold: " + (max - min) + " Sum: " + sum);
}
public static int getIntensity(int []rgb){
return (int)(0.3*rgb[0] + 0.59*rgb[1] + 0.11*rgb[2]);
}
public static int getGS(int []rgb){
return (int)(0.21*rgb[0] + 0.72*rgb[1] + 0.07*rgb[2]);
}
public static int getLightness(int []rgb){
int max = Math.max( rgb[0], Math.max( rgb[1], rgb[2]));
int min = Math.min(rgb[0], Math.min(rgb[1], rgb[2]));
return (int)( (max + min) / 2);
}
private static int[] getPixelData(BufferedImage img, int x, int y) {
int argb = img.getRGB(x, y);
int rgb[] = new int[] {
(argb >> 16) & 0xff, //red
(argb >> 8) & 0xff, //green
(argb ) & 0xff //blue
};
return rgb;
}
/*
* if(args.length < 1){
Log.d(TAG, "Enter image.");
return;
}
String imageAddress = args[0];
try {
BufferedImage image = ImageIO.read(new File( imageAddress).toURI().toURL());
image = getGrayScale( image);
/*int []rgb = getPixelData( image, 128, 62);
Log.d(TAG, "Pixel 128,62: " + rgb[0] + " " + rgb[1] + " " + rgb[2]);
rgb = getPixelData( image, 129, 62);
Log.d(TAG, "Pixel 129,62: " + rgb[0] + " " + rgb[1] + " " + rgb[2]);
Log.d(TAG, " Height: " + image.getHeight() + " Width: " + image.getWidth());
int []orig = new int[ image.getWidth() * image.getHeight()];
PixelGrabber grabber = new PixelGrabber( image, 0, 0,
image.getWidth(), image.getHeight(), orig, 0, image.getWidth());
try {
grabber.grabPixels();
}
catch(InterruptedException e2) {
System.out.println("error: " + e2);
}
harris h = new harris();
h.init( orig, image.getWidth(), image.getHeight(), 0.001);
orig=h.process();
//final Image output = createImage(new MemoryImageSource(width, height, orig, 0, width));
final Image output = Toolkit.getDefaultToolkit().
createImage(new MemoryImageSource(image.getWidth(), image.getHeight(), orig, 0, image.getWidth()));
JFrame frame = new JFrame();
frame.setSize(500,500);
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new JLabel(new ImageIcon(output)));
frame.show();
} catch (IOException e) {
e.printStackTrace();
Log.d(TAG, "Image read error.");
}
* */
}