彩色照片转换为黑白照片(Color image converted to black and white picture)

This blog will be talking about the color image converted to black and white picture.

The project structure as follow:



The run result:



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source code：

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/UUUU_Test/src/com/b510/image/clent/Client.java

/**
*
*/
package com.b510.image.clent;

import java.io.File;

import com.b510.image.common.Common;
import com.b510.image.util.ImageUtil;

/**
* @author Hongten
* @create 2014-7-13
* @mail hongtenzone@foxmail.com
*/
public class Client {

public static void main(String[] args) {
File input = new File(Common.ORGINAL_IMAGE);
File out = new File(Common.PROCESSED_IMAGE);
ImageUtil.changeImge(input, out);
}
}

/UUUU_Test/src/com/b510/image/common/Common.java

/**
*
*/
package com.b510.image.common;

/**
* @author Hongten
* @create 2014-7-13
* @mail hongtenzone@foxmail.com
*/
public class Common {

// Orginal image path
public static String ORGINAL_IMAGE = "src/com/b510/image/resources/orginal_image.jpg";
// Processed image path
public static String PROCESSED_IMAGE = "src/com/b510/image/resources/processed_image.jpg";

public static String PROCESS_SUCCESS = "Processed successfully.....";
public static String PROCESS_ERROR = "Processing encounters error!";
}

/UUUU_Test/src/com/b510/image/util/ImageUtil.java

/**
*
*/
package com.b510.image.util;

import java.awt.Image;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;

import com.b510.image.common.Common;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

/**
* @author Hongten
* @create 2014-7-13
* @mail hongtenzone@foxmail.com
*/
public class ImageUtil {
/**
* Color image is converted to black and white picture.
*/
public static void changeImge(File input, File out) {
try {
Image image = ImageIO.read(input);
int srcH = image.getHeight(null);
int srcW = image.getWidth(null);
BufferedImage bufferedImage = new BufferedImage(srcW, srcH, BufferedImage.TYPE_3BYTE_BGR);
bufferedImage.getGraphics().drawImage(image, 0, 0, srcW, srcH, null);
bufferedImage = new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_GRAY), null).filter(bufferedImage, null);
FileOutputStream fos = new FileOutputStream(out);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(fos);
encoder.encode(bufferedImage);
fos.close();
System.out.println(Common.PROCESS_SUCCESS);
} catch (IOException e) {
e.printStackTrace();
throw new IllegalStateException(Common.PROCESS_ERROR, e);
}
}

}

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More reading,and english is important.

I'm Hongten



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