https://blog.csdn.net/yellowd1/article/details/50879296
importjava.awt.Graphics2D;
importjava.awt.image.BufferedImage;
importjava.io.File;
importjava.io.IOException;
importjava.util.regex.Pattern;
importjavax.imageio.ImageIO;
importjavax.swing.ImageIcon;
importjavax.swing.JOptionPane;
publicclassPicture {
publicstaticvoidconvert(String path) {
// TODO Auto-generated constructor stub
try{
BufferedImage image = ImageIO.read(newFile(path));
ImageIcon imageIcon = newImageIcon(image);
BufferedImage bufferedImage = newBufferedImage(
imageIcon.getIconWidth(), imageIcon.getIconHeight(),
BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2D = (Graphics2D) bufferedImage.getGraphics();
g2D.drawImage(imageIcon.getImage(), 0, 0,
imageIcon.getImageObserver());
intalpha = 0;
for(intj1 = bufferedImage.getMinY(); j1 < bufferedImage
.getHeight(); j1++) {
for(intj2 = bufferedImage.getMinX(); j2 < bufferedImage
.getWidth(); j2++) {
intrgb = bufferedImage.getRGB(j2, j1);
if(colorInRange(rgb))
alpha = 0;
else
alpha = 255;
rgb = (alpha << 24) | (rgb & 0x00ffffff);
bufferedImage.setRGB(j2, j1, rgb);
}
}
g2D.drawImage(bufferedImage, 0, 0, imageIcon.getImageObserver());
// 生成图片为PNG
String outFile = path.substring(0, path.lastIndexOf("."));
ImageIO.write(bufferedImage, "png", newFile(outFile + ".png"));
} catch(IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
publicstaticbooleancolorInRange(intcolor) {
intred = (color & 0xff0000) >> 16;
intgreen = (color & 0x00ff00) >> 8;
intblue = (color & 0x0000ff);
if(red >= color_range && green >= color_range && blue >= color_range)
returntrue;
returnfalse;
}
publicstaticintcolor_range = 210;
publicstaticPattern pattern = Pattern.compile("[0-9]*");
publicstaticbooleanisNo(String str) {
returnpattern.matcher(str).matches();
}
/**
* @param args
*/
publicstaticvoidmain(String[] args) {
// TODO Auto-generated method stub
String path = JOptionPane.showInputDialog(null, "请输入图片目录");
if(path == null|| !newFile(path).isDirectory()) {
JOptionPane.showMessageDialog(null, "输入目录有误！");
return;
}
String color = JOptionPane.showInputDialog(null, "请输入色差范围0~255(建议10~50)");
if(isNo(color)) {
color_range = 255- Integer.parseInt(color);
File file = newFile(path);
String[] files = file.list();
for(inti = 0; i < files.length; i++) {
String ext = files[i].substring(files[i].lastIndexOf(".") + 1);
if(ext.equals("jpg")) {
convert(path + "//"+ files[i]);
}
}
JOptionPane.showMessageDialog(null, "转换完成！");
} else{
JOptionPane.showMessageDialog(null, "输入的数字有误！");
}
}
}
