另类加水印——根据明暗度分别加不同的水印
package image; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; import java.awt.image.ColorModel; import java.awt.image.PixelGrabber; import java.io.File; import java.io.FileOutputStream; import javax.imageio.ImageIO; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class WaterMark { /** * 获取指定矩形中的像素的矩阵 * * @param imageSrc * @param startX * @param startY * @param w * @param h * @return […]