private static ImageIcon makeGrayImageIcon1(Image img) {
BufferedImage source =
new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
Graphics g = source.createGraphics();
g.drawImage(img, 0, 0, null);
g.dispose();
ColorConvertOp colorConvert =
new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_GRAY), null);
BufferedImage destination = colorConvert.filter(source, null);
return new ImageIcon(destination);
}
private BufferedImage convert(BufferedImage image, int imageType) {
if (image.getType() == imageType) {
return image;
}
int w = image.getWidth();
int h = image.getHeight();
BufferedImage newImg = new BufferedImage(w, h, imageType);
ColorSpace srcSpace = image.getColorModel().getColorSpace();
ColorSpace newSpace = newImg.getColorModel().getColorSpace();
ColorConvertOp convert = new ColorConvertOp(srcSpace, newSpace, null);
convert.filter(image, newImg);
return newImg;
}