单色灰度图像，获取像素强度

也许这会帮助您：

http://docs.oracle.com/javase/7/docs/api/java/awt/image/BufferedImage.html

http://docs.oracle.com/javase/7/docs/api/javax/imageio/ImageIO.html

BufferedImage img = ImageIO.read(new File("filePath.png"));int sRbgColor = img.getRGB(int x, int y);Color c = new Color(sRbgColor);int red = c.getRed();int green = c.getGreen();int blue = c.getBlue();

如果是单色，则红色，绿色和蓝色应该相等。