public void setGraphicalDefaults(MouseEvent e)
{
x = e.getX();
y = e.getY();
Color c = new Color(img.getRGB(x,y));
int red = (c.getRed());
int green =(c.getGreen());
int blue = (c.getBlue());
System.out.println(red + " "+ green + " "+ blue);
}
从上面的代码我可以得到RGB值但是如何获得'Gray Scale'值?
答案 0 :(得分:3)
有各种算法可将彩色图像转换为灰度。一个非常简单的解决方案是平均三个通道以获得灰度值:
int gray = (red + green + blue) / 3
有关详细信息,请查看此文章:
http://www.johndcook.com/blog/2009/08/24/algorithms-convert-color-grayscale/