Java Bitmap pixel to image(png) setRGB example

Java에서 Bitmap을 Pixel 단위로 처리 할때 샘플...

 

Source...

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

public class BufferedImagePixels {

public static void main(String[] args) {

BufferedImage bufferedImage = new BufferedImage(300, 300,

BufferedImage.TYPE_INT_RGB);

int rgb = bufferedImage.getRGB(1, 1);

int w = bufferedImage.getWidth(null);

int h = bufferedImage.getHeight(null);

int[] rgbs = new int[w * h];

bufferedImage.getRGB(0, 0, w, h, rgbs, 0, w);

rgb = 0xFF00FF00; // green

for (int i = 1; i < w; i++) {

bufferedImage.setRGB(i, i, rgb);

}

File outputfile = new File("c:\\image.png");

try {

// png, 

ImageIO.write(bufferedImage, "png", outputfile);

} catch (IOException e) {

e.printStackTrace();

}

}

}

결과...