How do I desaturate a BufferedImage in Java?

问题

What's the simplest way to desaturate a BufferedImage?

回答1:

Use ColorConvertOp:

public static BufferedImage desaturate(BufferedImage source) {
    ColorConvertOp colorConvert = 
        new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_GRAY), null);
    colorConvert.filter(source, source);

    return source;
}

---

Update :
There is indeed a simpler way. You can use the GrayFilter class. What's nice about this class is that it provides a static utility method (i.e. createDisabledImage(Image i)) that will return a grayed-out version of the image i.

That being said, I think the simplest way to desaturate a BufferedImage instance is the following:

BufferedImage desaturatedImage = GrayFilter.createDisabledImage(originalImage);

来源：https://stackoverflow.com/questions/6471340/how-do-i-desaturate-a-bufferedimage-in-java