(完整程序)C#.Net2.0的简单验证码识别示例

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(完整程序)C#.Net2.0的简单验证码识别示例

2013年08月14日 ⁄ 综合 ⁄ 共 10181字 ⁄ 字号小中大 ⁄ 评论关闭

本文所讲的技术只是验证码识别的初级技术，只能识别一些简单的验证码，比如

符合下列部分条件的：字体工整、位置固定、颜色统一、没有干扰点、背静单纯。

程序是通过抓特征点来达到识别目的。图片由一个一个的点(像素)组成，点的颜

色变化就组成了我们看见的图片，呈现一个图象就是那几个点按照一定的顺序排

列而已。

这样识别率100%，速度极快识别一个的过程一般在几十毫秒级别内，如果要追求

更快的速度，使用API直接操作图形，速度更快。

而本程序只针对网站http://www.51.la/login.asp验证码签别
其图片Url是:　http://www.51.la/user/vcode.asp

由于本程序写得比较差劲,请见谅！

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;

namespace getCheckCode
{
    public partial class main : Form
    {
        HttpWebRequest RQ;
        HttpWebResponse RP;
        FileWebRequest FQ;
        FileWebResponse FP;
        private static Bitmap bmp;
        string[] color=new string[60];
        string[] color0 = new string[60];
        string[] color1 = new string[60];
        string[] color2 = new string[60];
        string[] color3 = new string[60];
        string[] color4 = new string[60];
        string[] color5 = new string[60];
        string[] color6 = new string[60];
        string[] color7 = new string[60];
        string[] color8 = new string[60];
        string[] color9 = new string[60];

        public main()
        {
            InitializeComponent();
            getImage(txtUrl.Text.Trim().ToString());
            pbimage.Image = bmp;
            for (int i = 2; i <= 34; i = i + 10)
            {
                getColor(i, i + 5);
                initialization();
                lblresult.Text += getNum(0);
            }
        }

        /// <summary>
        /// 获取网络图片
        /// </summary>
        /// <param name="url"></param>
        public void getImage(string url)
        {
            RQ = (HttpWebRequest)HttpWebRequest.Create(url);
            RQ.CookieContainer = new CookieContainer();
            RP = (HttpWebResponse)RQ.GetResponse();
            bmp = new Bitmap(RP.GetResponseStream());
        }

        /// <summary>
        /// 获取本地图片
        /// </summary>
        /// <param name="url"></param>
        public void getFileImage(string url)
        {
            FQ = (FileWebRequest)FileWebRequest.Create(url);
            FP=(FileWebResponse)FQ.GetResponse();
            bmp=new Bitmap(FP.GetResponseStream());
        }

        private void btnflush_Click(object sender, EventArgs e)
        {
            lblresult.Text = " ";
            getImage(txtUrl.Text.Trim().ToString());
            pbimage.Image = bmp;
            for (int i = 2; i <= 34; i=i+10)
            {
                getColor(i, i+5);
                initialization();
                lblresult.Text += getNum(0);
            }

}

        /// <summary>
        /// 初始化数组
        /// </summary>
        /// <param name="begin"></param>
        /// <param name="end"></param>
        private void getColor(int begin,int end)
        {
            int j = 0;
            for (int i = begin; i <= end; i++)
            {
                for (int k = 0; k <= 9; k++)
                {
                    color[j] = bmp.GetPixel(i, k).ToString();
                    j++;
                }
            }
        }

        /// <summary>
        /// 根据特征来判断数字
        /// </summary>
        /// <param name="begin"></param>
        /// <returns></returns>
        private string getNum(int begin)
        {
            int m=0;
            string num="?";

            //8
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color8[i])
                {
                    m++;
                }
            }
            if (m >= 16)
            {
                num = "8";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //7
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color7[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "7";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //0
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color0[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "0";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //6
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color6[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "6";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //1
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color1[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "1";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //2
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color2[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "2";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //3
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color3[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "3";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //4
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color4[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "4";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //5
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color5[i])
                {
                    m++;
                }
            }
            if (m >= 8)
            {
                num = "5";
                m = 0;
            }
            else
            {
                m = 0;
            }

            //9
            for (int i = 0; i < 60; i++)
            {
                if (color[i] == color9[i])
                {
                    m++;
                }
            }
            if (m >= 10)
            {
                num = "9";
                m = 0;
            }
            else
            {
                m = 0;
            }

return num;
}

        /// <summary>
        /// 初始化数字的像素
        /// </summary>
        private void initialization()
        {
            //0
            color0[1] = "Color [A=255, R=0, G=9, B=204]";
            color0[5] = "Color [A=255, R=0, G=9, B=204]";
            color0[8] = "Color [A=255, R=0, G=9, B=204]";
            color0[20] = "Color [A=255, R=0, G=9, B=204]";
            color0[29] = "Color [A=255, R=0, G=9, B=204]";
            color0[39] = "Color [A=255, R=0, G=9, B=204]";
            color0[51] = "Color [A=255, R=0, G=9, B=204]";
            color0[58] = "Color [A=255, R=0, G=9, B=204]";

            //1
            color1[1] = "Color [A=255, R=0, G=9, B=204]";
            color1[9] = "Color [A=255, R=0, G=9, B=204]";
            color1[11] = "Color [A=255, R=0, G=9, B=204]";
            color1[20] = "Color [A=255, R=0, G=9, B=204]";
            color1[21] = "Color [A=255, R=0, G=9, B=204]";
            color1[28] = "Color [A=255, R=0, G=9, B=204]";
            color1[29] = "Color [A=255, R=0, G=9, B=204]";
            color1[49] = "Color [A=255, R=0, G=9, B=204]";

            //2
            color2[1] = "Color [A=255, R=0, G=9, B=204]";
            color2[8] = "Color [A=255, R=0, G=9, B=204]";
            color2[9] = "Color [A=255, R=0, G=9, B=204]";
            color2[17] = "Color [A=255, R=0, G=9, B=204]";
            color2[26] = "Color [A=255, R=0, G=9, B=204]";
            color2[35] = "Color [A=255, R=0, G=9, B=204]";
            color2[44] = "Color [A=255, R=0, G=9, B=204]";
            color2[52] = "Color [A=255, R=0, G=9, B=204]";

            //3
            color3[2] = "Color [A=255, R=0, G=9, B=204]";
            color3[7] = "Color [A=255, R=0, G=9, B=204]";
            color3[10] = "Color [A=255, R=0, G=9, B=204]";
            color3[24] = "Color [A=255, R=0, G=9, B=204]";
            color3[34] = "Color [A=255, R=0, G=9, B=204]";
            color3[43] = "Color [A=255, R=0, G=9, B=204]";
            color3[52] = "Color [A=255, R=0, G=9, B=204]";
            color3[58] = "Color [A=255, R=0, G=9, B=204]";

            //4
            color4[5] = "Color [A=255, R=0, G=9, B=204]";
            color4[13] = "Color [A=255, R=0, G=9, B=204]";
            color4[22] = "Color [A=255, R=0, G=9, B=204]";
            color4[31] = "Color [A=255, R=0, G=9, B=204]";
            color4[40] = "Color [A=255, R=0, G=9, B=204]";
            color4[41] = "Color [A=255, R=0, G=9, B=204]";
            color4[47] = "Color [A=255, R=0, G=9, B=204]";
            color4[49] = "Color [A=255, R=0, G=9, B=204]";

            //5
            color5[0] = "Color [A=255, R=0, G=9, B=204]";
            color5[1] = "Color [A=255, R=0, G=9, B=204]";
            color5[8] = "Color [A=255, R=0, G=9, B=204]";
            color5[23] = "Color [A=255, R=0, G=9, B=204]";
            color5[33] = "Color [A=255, R=0, G=9, B=204]";
            color5[43] = "Color [A=255, R=0, G=9, B=204]";
            color5[54] = "Color [A=255, R=0, G=9, B=204]";
            color5[58] = "Color [A=255, R=0, G=9, B=204]";

            //6
            color6[24] = "Color [A=255, R=0, G=9, B=204]";
            color6[11] = "Color [A=255, R=0, G=9, B=204]";
            color6[15] = "Color [A=255, R=0, G=9, B=204]";
            color6[40] = "Color [A=255, R=0, G=9, B=204]";
            color6[44] = "Color [A=255, R=0, G=9, B=204]";
            color6[51] = "Color [A=255, R=0, G=9, B=204]";
            color6[55] = "Color [A=255, R=0, G=9, B=204]";
            color6[58] = "Color [A=255, R=0, G=9, B=204]";