ADD file via upload

java实验图像处理.java

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+
+import javax.imageio.ImageIO;
+import javax.swing.*;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.awt.image.RenderedImage;
+import java.io.File;
+import java.io.IOException;
+ 
+public class java实验图像处理 {
+ 
+ static   BufferedImage bufferedImage_start,bufferedImage_end ;//创建2个BufferedImage对象
+    public static BufferedImage gray(BufferedImage b){        //定义灰度方法  返回值为BufferedImage对象
+        int width = b.getWidth();
+        int height =b.getHeight();
+        bufferedImage_end = new BufferedImage(width,height, BufferedImage.TYPE_3BYTE_BGR );  //构建新的对象模型
+        // 遍历图片的RGB值，把得到的灰度值存到bufferedImage_end中，然后返回bufferedImage_end
+        for (int y = 0; y < height; y++) {
+            for (int x = 0; x < width; x++) {
+ 
+                Color color = new Color(bufferedImage_start.getRGB(x,y));//构建Color获取图片像素点
+                int gray = (int)(color.getRed() * 0.299 + color.getGreen() * 0.587 + color.getBlue() *0.114);
+                Color color_end = new Color(gray,gray,gray);   //将设置的像素设置到bufferedImage_end
+                bufferedImage_end.setRGB(x,y,color_end.getRGB());
+            }
+        }
+        return bufferedImage_end;
+    }
+ 
+    public static void main(String[] args) {
+          try {
+            bufferedImage_start = ImageIO.read(new File("D:/FFOutput/实例.bmp"));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+ 
+ 
+		 try{
+ 
+			 RenderedImage rendImage =gray(bufferedImage_start);
+			  File file = new File("D:/FFOutput/实例灰度.bmp");
+              ImageIO.write(rendImage, "bmp", file);
+		 }catch(IOException e){
+		System.out.println(e);
+		}
+    }
+}