From b070a99a14d6be4e109307c8ac37285501261d95 Mon Sep 17 00:00:00 2001
From: Threadalive <45752021+Threadalive@users.noreply.github.com>
Date: Mon, 6 May 2019 12:55:09 +0800
Subject: [PATCH] Add files via upload
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基于KNN算法的手写数字识别
---
 HandCompare.java |  24 +++++++
 HandJframe.java  |  62 +++++++++++++++++
 HandListen.java  | 169 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 255 insertions(+)
 create mode 100644 HandCompare.java
 create mode 100644 HandJframe.java
 create mode 100644 HandListen.java

diff --git a/HandCompare.java b/HandCompare.java
new file mode 100644
index 0000000..447af92
--- /dev/null
+++ b/HandCompare.java
@@ -0,0 +1,24 @@
+public class HandCompare {
+    private int [][]num;
+    private int [][]sample;
+    public HandCompare(int [][]num,int[][]sample){//获取当前数组与样本数组
+        this.num=num;
+        this.sample=sample;
+    }
+    public double Compare(){
+        double a=0;
+        for(int i=0;i<401;i++){//这样的效果相当于得出这两张图的不重叠的面积
+            for (int j=0;j<401;j++){
+                if (num[i][j]!=sample[i][j]){
+                    a++;
+                }
+            }
+        }
+        return a+(sample[0][0]/10.0);//在最后的数据上还能保存这个样本的类型
+
+    }
+
+
+}
+
+
diff --git a/HandJframe.java b/HandJframe.java
new file mode 100644
index 0000000..f978dae
--- /dev/null
+++ b/HandJframe.java
@@ -0,0 +1,62 @@
+import javax.swing.*;
+import java.awt.*;
+
+public class HandJframe extends JPanel {
+    private Graphics g;
+    private HandListen handListen;//监听器
+
+
+
+    public void Plaette(){
+        JFrame jf=new JFrame();
+        jf.setSize(600,600);
+        jf.setTitle("手写识别");
+
+        //结束进程
+        jf.setDefaultCloseOperation(3);
+        jf.setLocationRelativeTo(null);
+        jf.setResizable(false);   //窗口不可更改
+        jf.setLayout(new FlowLayout());//流式布局管理器
+        this.setPreferredSize(new Dimension(400,400));//400，400的面板
+        this.setBackground(Color.black);
+        jf.add(this);
+        handListen=new HandListen(this);
+        //set button
+        String chose[]={"sample save","indentify"};
+        for(int i=0;i<chose.length;i++){
+            JButton jbu=new JButton(chose[i]);
+            jf.add(jbu);
+            jbu.addActionListener(handListen);
+        }
+
+
+     //下拉框
+        JComboBox jcb;
+        String str1[]={"0","1","2","3","4","5"};
+        jcb=new JComboBox(str1);
+        jf.add(jcb);
+        handListen.setJ(jcb);
+
+
+        this.addMouseMotionListener(handListen);
+        this.addMouseListener(handListen);
+
+        jf.setVisible(true);
+//传画笔
+        g=this.getGraphics();
+        handListen.setG(g);
+
+    }
+
+
+
+public static void main(String args[]){
+        HandJframe handJframe=new HandJframe();
+        handJframe.Plaette();
+}
+
+public   void paint(Graphics g){
+        super.paint(g);
+}
+
+}
diff --git a/HandListen.java b/HandListen.java
new file mode 100644
index 0000000..e39bf1e
--- /dev/null
+++ b/HandListen.java
@@ -0,0 +1,169 @@
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.io.*;
+import java.rmi.server.UID;
+import java.util.Arrays;
+import java.util.HashMap;
+
+public class HandListen extends MouseAdapter implements ActionListener {
+    private String fileNameTamp;//文件名称与路径
+    private HandJframe handJframe;
+    private HandCompare handCompare;
+    private JComboBox jcb;
+    private Graphics g;
+
+    private int x, y;
+    private int k = 5;
+
+
+    private int[][] num = new int[401][401];
+    private int[][] sample = new int[401][401];
+
+    {
+        for (int i = 0; i < 401; i++) {
+            for (int j = 0; j < 401; j++) {
+                num[i][j] = 0;
+            }
+        }
+    }
+
+    public HandListen(HandJframe handJframe) {
+        this.handJframe = handJframe;
+    }
+
+    public void setG(Graphics g) {
+        this.g = g;
+    }
+
+    public void setJ(JComboBox jcb) {
+        this.jcb = jcb;
+    }
+
+    public void mouseGragged(MouseEvent e) {
+        x = e.getX();
+        y = e.getY();
+        g.setColor(Color.WHITE);
+        g.fillRect(x, y, 30, 30);
+        for (int i = x; i < x + 30; i++) {
+            for (int j = y; j < y + 30; y++) {
+                num[i][j] = 1;
+            }
+        }
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if (jcb.getSelectedItem() == "0") {
+            num[0][0] = 0;
+        } else if (jcb.getSelectedItem() == "1") {
+            num[0][0] = 1;
+        } else if (jcb.getSelectedItem() == "2") {
+            num[0][0] = 2;
+        } else if (jcb.getSelectedItem() == "3") {
+            num[0][0] = 3;
+        } else if (jcb.getSelectedItem() == "4") {
+            num[0][0] = 4;
+        } else if (jcb.getSelectedItem() == "5") {
+            num[0][0] = 5;
+        }
+
+        String path = "/Users/mac/Documents/java/样本";
+        String fileName = null;
+        if ("样品保存".equals(e.getActionCommand())) {// 获取当前事件源对象
+            UID uid=new UID();
+            fileName="样本"+uid.hashCode();
+            fileNameTamp= path+fileName+".txt";
+            File file=new File(fileNameTamp);
+            //如果文件不存在，则创建新的文件
+
+                if (!file.exists()) {
+                    try {
+                        file.createNewFile();
+                    } catch (IOException e1) {
+                        e1.printStackTrace();
+                    }
+                    //创建文件成功后，写入内容到文件里
+                }
+                try {
+                    FileWriter out = new FileWriter(file); //文件写入流
+                } catch (IOException e1) {
+                    e1.printStackTrace();
+                }
+            for(int i=0;i<401;i++){
+                for(int j=0;j<401;j++){
+                    num[i][j]=0;
+                }
+            }
+            handJframe.paint(g);//重绘
+
+
+
+        }
+        if (("识别").equals(e.getActionCommand())) {// 取出所有的样品进行knn对比，寻找出于两类样品差距最小的一类，得出识别的结果
+       File file=new File("/Users/mac/Documents/java/样本");
+            String filelist[]=file.list();
+            Double value[]=new Double [filelist.length];//获取相似程度的数组
+            System.out.println(filelist.length);
+            for(int i=0;i<filelist.length;i++) {
+                File file1 = new File("/Users/mac/Documents/java/样本" + filelist[i]);
+                System.out.println(filelist[i]);
+                try {
+                    FileReader in = new FileReader(file1);
+                    for (int k = 0; k < 401; k++) {
+                        for (int j = 0; j < 401; j++) {
+                            sample[k][j] = in.read();//获取文档传来的数组
+                        }
+                    }
+                    in.close();//关闭流
+                } catch (FileNotFoundException e1) {
+                    e1.printStackTrace();
+                } catch (IOException e1) {
+                    e1.printStackTrace();
+                }
+                handCompare = new HandCompare(num, sample);//将需要进行对比的两个数组传入
+                value[i] = handCompare.Compare();//得出相似度
+            }
+                Arrays.sort(value);
+
+                int one=0;
+                int zero=0;
+                int two=0;
+                int three=0;
+                int four=0;
+                int five=0;
+                HashMap hashMap=new HashMap();//建立哈希函数一一对应的关系
+                for(int i=0;i<k;i++){//累加和判断最后的类型
+                    System.out.println(value[i]);
+                    if(((int)(value[i]*10))%10==1){//入围k的数目
+                        one++;
+                        hashMap.put(one,1);//
+                    }else if (((int)(value[i]*10))%10==0){
+                        zero++;
+                        hashMap.put(zero,0);
+                    }else if (((int)(value[i]*10))%10==2){
+                        two++;
+                        hashMap.put(two,2);
+                    }else if (((int)(value[i]*10))%10==3){
+                        three++;
+                        hashMap.put(three,3);
+                    }else if (((int)(value[i]*10))%10==4){
+                        four++;
+                        hashMap.put(four,4);
+                    }else if (((int)(value[i]*10))%10==5){
+                        five++;
+                        hashMap.put(five,5);
+                    }
+
+                }
+
+            int judge[]={zero,one,three,two,four,five};
+            Arrays.sort(judge);//进行升序排序
+            int a=judge.length;
+            JOptionPane.showMessageDialog(null, "识别为"+hashMap.get(judge[a-1])); // 弹出最后的识别结果
+
+        }
+}}
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