图像-识别出图⽚⾥的数字和字母
本⽂给⼤家分享的是C#识别出图⽚⾥的数字和字母的代码，主要是识别以前公司的软件注册码截图⾥的数字和字母，功能很简单，也存在很⼤的局限性，这⾥仅仅是分享，⼩伙伴们参考下。
⼀个图⽚识别⼩⼯具，原先主要是识别以前公司的软件注册码截图⾥的数字和字母（每次要⼀个⼀个框复制出来粘贴到注册器⾥，很⿇烦！），因为注册码出现的字母和数字基本就那⼏个，所以识别库的范围设定的⽐较少。原理和算法在代码中做了详细说明，功能存在很⼤的局限性，但我的想法是把这个思路和实现的办法共享出来。
源码下载地址：
git.oschina/bobo2cj/iamge2text
1using System;
2using System.Collections.Generic;
3using System.ComponentModel;
4using System.Data;
5using System.Drawing;
6using System.Text;
7using System.Windows.Forms;
8
9namespace iamge2text
10 {
11public partial class FormLicense : Form
12 {
13
14/*
15 * 开发思路：图⽚灰度处理，⼆进制，然后和图⽚中的字⼆进制库精确对⽐
16 *
17 * 获取字库：通过下⾯代码中generateLicense(Bitmap singlepic)⽅法获得，具体操作：
18 * 从图⽚中截图出（抠出）⼀个字符，然后处理得到⼆维的⼆进制矩阵，⽐如下⾯的字符1对应的⼆维矩阵
19 * 00000
20 * 00100
21 * 11100
22 * 00100
23 * 00100
24 * 00100
25 * 00100
26 * 00100
27 * 00100
28 * 11111
29 * 00000
30 * 00000
31 *
32 * 注意：【相同字符，⽐如1，不同字体，字号，不同缩放⼤⼩的图⽚，获得到的⼆位矩阵中0、1排列和数量都是不同的！
33 * 故按照此⽅法来写出匹配所有字的话，那字库就⼤了。。。】
34 *
35 *
36*/
37public FormLicense()
38 {
39 InitializeComponent();
40 buttonGenerate.Enabled = false; //在pictureBox控件中⽆图⽚时buttonGenerate按钮不可⽤
41 richTextBoxLicense.ReadOnly = true; //并且不可以在⽂本框中改动输出后的字符
42this.AcceptButton = this.buttonOpen; //回车键作⽤在打开按钮上
43 }
44
45#region在⽤的字符对应⿊⽩颜⾊⼆进制码的字库，我的⼯具中只需要下⾯的⼏个字符，所有不是所有⽂字都能识别出来
46static string stringByte0 = "000000001100010010100001100001100001100001100001010010001100000000000000";
47static char[] char0 = stringByte0.ToCharArray();
48static int BinaryWidth0 = 5, BinaryHeight0 = 11; //0的平⾯像素长宽(从0开始数起)
49
50static string stringByte1 = "000000010011100001000010000100001000010000100111110000000000";
51static char[] char1 = stringByte1.ToCharArray();
52static int BinaryWidth1 = 4, BinaryHeight1 = 11; //1的平⾯像素长宽(从0开始数起)
53
54static string stringByte2 = "000000111010001100010000100010001000100010001111110000000000";
55static char[] char2 = stringByte2.ToCharArray();
56static int BinaryWidth2 = 4, BinaryHeight2 = 11; //2的平⾯像素长宽(从0开始数起)
57
58static string stringByte3 = "000000111010001100010011000001000011000110001011100000000000";
59static char[] char3 = stringByte3.ToCharArray();
60static int BinaryWidth3 = 4, BinaryHeight3 = 11; //3的平⾯像素长宽(从0开始数起)
61
62static string stringByte4 = "000010000010000110001010010010010010100010011111000010000111000000000000";
63static char[] char4 = stringByte4.ToCharArray();
64static int BinaryWidth4 = 5, BinaryHeight4 = 11; //4的平⾯像素长宽(从0开始数起)
65
66static string stringByte5 = "0000011111100001000011110100010000110001100010111000000000
00";
67static char[] char5 = stringByte5.ToCharArray();
68static int BinaryWidth5 = 4, BinaryHeight5 = 11; //5的平⾯像素长宽(从0开始数起)
69
70static string stringByte6 = "000000001111010001100000101110110001100001100001100001011110000000000000";
71static char[] char6 = stringByte6.ToCharArray();
72static int BinaryWidth6 = 5, BinaryHeight6 = 11; //6的平⾯像素长宽(从0开始数起)
73
74static string stringByte7 = "000001111110001100100001000100001000010000100001000000000000";
75static char[] char7 = stringByte7.ToCharArray();
76static int BinaryWidth7 = 4, BinaryHeight7 = 11; //7的平⾯像素长宽(从0开始数起)
77
78static string stringByte8 = "000000011110100001100001010010011110100001100001100001011110000000000000";
79static char[] char8 = stringByte8.ToCharArray();
80static int BinaryWidth8 = 5, BinaryHeight8 = 11; //8的平⾯像素长宽(从0开始数起)
81
82static string stringByte9 = "000000011110100001100001100001100011011101000001100010111100000000000000";
83static char[] char9 = stringByte9.ToCharArray();
84static int BinaryWidth9 = 5, BinaryHeight9 = 11; //9的平⾯像素长宽(从0开始数起)
85
86static string stringByteA = "000000000000000000000000011100100010001110010010100010011111000000000000";
87static char[] charA = stringByteA.ToCharArray();
88static int BinaryWidthA = 5, BinaryHeightA = 11; //a的平⾯像素长宽(从0开始数起)
89
90static string stringByteB = "000000110000010000010000011110010001010001010001010001011110000000000000";
91static char[] charB = stringByteB.ToCharArray();
92static int BinaryWidthB = 5, BinaryHeightB = 11; //b的平⾯像素长宽(从0开始数起)
93
94static string stringByteC = "000000000000000000000111110001100001000010001011100000000000";
95static char[] charC = stringByteC.ToCharArray();
96static int BinaryWidthC = 4, BinaryHeightC = 11; //c的平⾯像素长宽(从0开始数起)
97
98static string stringByteD = "000000000110000010000010011110100010100010100010100010011111000000000000";
99static char[] charD = stringByteD.ToCharArray();
100static int BinaryWidthD = 5, BinaryHeightD = 11; //d的平⾯像素长宽(从0开始数起)
101
102static string stringByteE = "000000000000000000000111010001111111000010001011100000000000";
103static char[] charE = stringByteE.ToCharArray();
104static int BinaryWidthE = 4, BinaryHeightE = 11; //e的平⾯像素长宽(从0开始数起)
105
106static string stringByteF = "000000000111001001001000111110001000001000001000001000011110000000000000";
图片下载站源码107static char[] charF = stringByteF.ToCharArray();
108static int BinaryWidthF = 5, BinaryHeightF = 11; //f的平⾯像素长宽(从0开始数起)
109
110static string stringByteP = "000000000000000000000000111110010001010001010001010001011110010000111000";
111static char[] charP = stringByteP.ToCharArray();
112static int BinaryWidthP = 5, BinaryHeightP = 11; //p的平⾯像素长宽(从0开始数起)
113
114static string stringByteY = "00000000000000000000000000001110111010001000101000010100
0001000000100000100001110000"; 115static char[] charY = stringByteY.ToCharArray();
116static int BinaryWidthY = 6, BinaryHeightY = 11; //y的平⾯像素长宽(从0开始数起)
117#endregion
118
119static int[,] intStartXY = new int[128, 3]; //记录匹配上时的“X坐标”和“Y坐标”对应的“值”以及该“字符像素的宽度”
120static int numIdentfied = 0; //负责记录总共有多少匹配的字符
121
122//打开图⽚按钮
123private void buttonOpen_Click(object sender, EventArgs e)
124 {
125try
126 {
127 Bitmap m_Bitmap; //定义个Bitmap型变量存储图⽚
128 OpenFileDialog openFileDialog = new OpenFileDialog(); //打开图⽚
129 openFileDialog.Filter = "Bitmap⽂件(*.bmp)|*.bmp|Jpeg⽂件(*.jpg)|*.jpg|所有合适⽂件(*.bmp/*.jpg)|*.bmp/*.jpg"; //设置图⽚类型130 openFileDialog.FilterIndex = 1; //打开对话框中默认第⼀个类型（即上⾯的Bitmap⽂件(*.bmp)|*.bmp）
131 openFileDialog.RestoreDirectory = true; //记录最后⼀次打开的⽂件路径
132if (DialogResult.OK == openFileDialog.ShowDialog())//确定打开⽂件
133 {
134 m_Bitmap = (Bitmap)Bitmap.FromFile(openFileDialog.FileName, false); //通过(Bitmap)将打开的图⽚类型转换
135 pictureBoxLicense.Image = m_Bitmap; //为pictureBox控件加载所打开的图⽚
136 AutoScroll = true;
137 AutoScrollMinSize = new Size((int)(m_Bitmap.Width), (int)m_Bitmap.Height);
138 buttonGenerate.Enabled = true; //在pictureBox控件中有图⽚时buttonGenerate按钮可⽤
139this.buttonGenerate.Select();
140 }
141 }
142catch { }
143 }
144
145//提取注册码按钮
146private void buttonGenerate_Click(object sender, EventArgs e)
147 {
148try
149 {
150 buttonGenerate.Enabled = false; //该图⽚只可进⾏⼀次提取，之后就不可⽤除⾮再加载该图⽚
151this.buttonOpen.Select();
152 numIdentfied = 0; //将计数器清零
153 Bitmap Sourcebm = (Bitmap)pictureBoxLicense.Image; //为了保险起见将pictureBox的图⽚类型进⾏格式转换(Bitmap)
154int iw = Sourcebm.Width; //图⽚宽度
155int ih = Sourcebm.Height; //图⽚⾼度
156//下⾯双循环是图⽚灰度处理
157for (int i = 0; i < iw; i++)
158 {//从左到右
159for (int j = 0; j < ih; j++)
160 {//从上到下
161 Color c = Sourcebm.GetPixel(i, j); //获取该点的颜⾊
162int luma = (int)(c.R * 0.3 + c.G * 0.59 + c.B * 0.11); //将颜⾊转换为数值体现
163 Sourcebm.SetPixel(i, j, Color.FromArgb(luma, luma, luma)); //将这⼀点进⾏灰度处理,⾮⽩⾊的部分变⿊
164 }
165 }
166 generateLicense(Sourcebm); //通过该⽅法进⾏提取字符
167 }
168catch { }
169 }
170
171///<summary>
172///提取出该图⽚内的字符（将进过灰度处理的图⽚转化为0、1的⼆位数组）
173///</summary>
174///<param name="singlepic">图⽚来源</param>
175public void generateLicense(Bitmap singlepic)
176 {
177try
178 {
179char[,] charArray = new char[singlepic.Height, singlepic.Width]; //定义个chai型的⼆维数组记录每个像素上0/1的值，形成⼀个矩形180int imageWidth = 0; //记录图⽚的像素宽度
181int imageHeight = 0; //记录图⽚的像素⾼度
182int dgGrayValue = 128; //灰度值
183 Color piexl;
184//string code = ""; //存储每个像素的0/1
185for (int posy = 0; posy < singlepic.Height; posy++)
186 {//从上到下
187string codeCache = ""; //存储每⾏的像素的0/1
188for (int posx = 0; posx < singlepic.Width; posx++)
189 {//从左到右
190 piexl = singlepic.GetPixel(posx, posy);
191if (piexl.R < dgGrayValue)
192 {// 如果该像素的颜⾊为⿊⾊，值就为“1”
193 codeCache = codeCache + "1";
194 }
195else
196 {// 否则该像素的颜⾊为⽩⾊，值就为“0”
197 codeCache = codeCache + "0";
198 }
199 }
200char[] array = codeCache.ToCharArray(); //每⾏的0/1的值⽤数字保存，以便于进⾏循环处理
201//code += codeCache + "\n";
202for (imageWidth = 0; imageWidth < array.Length; imageWidth++)
203 charArray[imageHeight, imageWidth] = array[imageWidth]; //通过循环将每⾏值转存到⼆维数组中
204 imageHeight++;
205 } //*********************以上代码可⽤来获取⼀个字的图⽚⼆进制数组，即字库*****************************
206
207//开始和字库进⾏匹配(我的⼯具中只需要下⾯的⼏个字符)
208 findWord(charArray, char0, imageHeight, imageWidth, BinaryWidth0, BinaryHeight0, '0');
209 findWord(charArray, char1, imageHeight, imageWidth, BinaryWidth1, BinaryHeight1, '1');
210 findWord(charArray, char2, imageHeight, imageWidth, BinaryWidth2, BinaryHeight2, '2');
211 findWord(charArray, char3, imageHeight, imageWidth, BinaryWidth3, BinaryHeight3, '3');
212 findWord(charArray, char4, imageHeight, imageWidth, BinaryWidth4, BinaryHeight4, '4');
213 findWord(charArray, char5, imageHeight, imageWidth, BinaryWidth5, BinaryHeight5, '5');
214 findWord(charArray, char6, imageHeight, imageWidth, BinaryWidth6, BinaryHeight6, '6');
215 findWord(charArray, char7, imageHeight, imageWidth, BinaryWidth7, BinaryHeight7, '7');
216 findWord(charArray, char8, imageHeight, imageWidth, BinaryWidth8, BinaryHeight8, '8');
217 findWord(charArray, char9, imageHeight, imageWidth, BinaryWidth9, BinaryHeight9, '9');
218 findWord(charArray, charA, imageHeight, imageWidth, BinaryWidthA, BinaryHeightA, 'a');
219 findWord(charArray, charB, imageHeight, imageWidth, BinaryWidthB, BinaryHeightB, 'b');
220 findWord(charArray, charC, imageHeight, imageWidth, BinaryWidthC, BinaryHeightC, 'c');
221 findWord(charArray, charD, imageHeight, imageWidth, BinaryWidthD, BinaryHeightD, 'd');
222 findWord(charArray, charE, imageHeight, imageWidth, BinaryWidthE, BinaryHeightE, 'e');
223 findWord(charArray, charF, imageHeight, imageWidth, BinaryWidthF, BinaryHeightF, 'f');
224 findWord(charArray, charP, imageHeight, imageWidth, BinaryWidthP, BinaryHeightP, 'p');
225 findWord(charArray, charY, imageHeight, imageWidth, BinaryWidthY, BinaryHeightY, 'y');
226//------------------------------------END---------------------------------------------
227 richTextBoxLicense.Text += identifySort(); //执⾏identifySort⽅法，将我需要的格式在richTextBoxLicense⽂本框中显⽰
228 richTextBoxLicense.SelectionStart = richTextBoxLicense.TextLength; //将光标移到最后⾯
229 }
230catch { }
231 }
232
233///<summary>
234///和字库进⾏匹配
235///</summary>
236///<param name="charArray">记录图⽚中每个像素的⼆维数组</param>
237///<param name="charNum">字库中0/1值⼀维数组形式的字符</param>
238///<param name="imageHeight">图⽚的像素⾼度</param>
239///<param name="imageWidth">图⽚的像素宽度</param>
240///<param name="binaryWidth">字库中该字符的像素宽度</param>
241///<param name="binaryHeight">字库中该字符的像素⾼度</param>
242///<param name="stringChar">字库中该字符</param>
243public void findWord(char[,] charArray, char[] charNum, int imageHeight, int imageWidth, int binaryWidth, int binaryHeight, char stringChar) 244 {
245try
246 {
247int upLeftX, upLeftY, x, y;
248for (y = 0; y < imageHeight - binaryHeight; y++)//从图⽚的每⾏开始
249 {
250for (x = 0; x < imageWidth - binaryWidth; x++)//从当前⾏的第⼀格开始
251 {
252bool isIdentified = false; //负责辨别是否匹配
253int count = 0; //负责计数
254for (upLeftY = 0; upLeftY <= binaryHeight; upLeftY++)//从图⽚中取出⼀块进⾏对⽐，从的每⾏开始
255 {
256for (upLeftX = 0; upLeftX <= binaryWidth; upLeftX++)//从这⼀块当前⾏的第⼀格开始
257 {
258//下⾯进⾏每格的对⽐，⼤数字去除的“块”是⼆维数组，⼩数组是⼀维数组
259if (charArray[y + upLeftY, x + upLeftX] == charNum[upLeftY * (binaryWidth + 1) + upLeftX])
260 {
261 isIdentified = true; //记录像素点是否⽐对成功
262 count++;
263if (count == (binaryWidth + 1) * (binaryHeight + 1))//判断是否对⽐到了最后⼀个像素点
264 {
265 intStartXY[numIdentfied, 0] = y; //记录字库中该字符在图⽚中出现的Y值
266 intStartXY[numIdentfied, 1] = x; //记录字库中该字符在图⽚中出现的X值
267 intStartXY[numIdentfied, 2] = Convert.ToInt32(stringChar); //将该字符转换为数字型
268 numIdentfied++; //记录图⽚中总共多少个字库中的数字
269break; //⼀旦匹配即将结束⽐对
270 }
271 }
272else
273 {
274 isIdentified = false; //此像素点⽐对不成功
275break; //如果该像素点值⽐对不成功即将结束⽐对
276 }
277 }
278if (!isIdentified)//如果⼀个不符就向后退⼀格，同时⼩数组的⽐对⼜需要从第⼀格开始
279break; //并且结束这次的⽐对
280 }
281 }
282 }
283 }
284catch { }
285 }
286
287///<summary>
288///对⽐对后的结果通过坐标进⾏排序
289///</summary>
290///<returns>提取出的图⽚中的字符串</returns>
291public string identifySort()
292 {
293string stringLicense = ""; //存储该结果
294try
295 {
296int intTemp = 0;
297for (int a = 0; a < numIdentfied; a++)
298 {//从第⼀列开始
299for (int b = 0; b < numIdentfied; b++)
300 {//然后从该列中第⼀⾏开始对⽐
301if (intStartXY[a, 0] < intStartXY[b, 0])
302 {//通过Y坐标（离顶端距离）判断那个字符在上⾯，并进⾏对调
303for (int c = 0; c < 3; c++)
304 {
305 intTemp = intStartXY[a, c];
306 intStartXY[a, c] = intStartXY[b, c];
307 intStartXY[b, c] = intTemp;
308 }
309 }
310if (intStartXY[a, 0] == intStartXY[b, 0] && intStartXY[a, 1] < intStartXY[b, 1])
311 {//当Y坐标（离顶端距离）相同时，通过X坐标（离左端距离）判断那个字符在左⾯，并进⾏对调
312for (int c = 0; c < 3; c++)
313 {
314 intTemp = intStartXY[a, c];
315 intStartXY[a, c] = intStartXY[b, c];
316 intStartXY[b, c] = intTemp;
317 }
318 }
319 }
320 }
321
322//------------------------下⾯是我需要的格式-------------------------------------------------------------
323/*
324 yp_12_125
325 yp_12_125
326 e4ebf340-563b5e1c-b04957df-baacc576
327*/
328for (int h = 0; h < numIdentfied; h++)
329 {
330 stringLicense += Convert.ToChar(intStartXY[h, 2]);
331if ((intStartXY[h + 1, 0] == intStartXY[h, 0] && intStartXY[h + 1, 1] - intStartXY[h, 1] >= 12 && h < numIdentfied - 32)) 332 stringLicense += "_"; //当同⼀⾏时，相差⼀个下划线距离就显⽰下划线_
333if (intStartXY[h + 1, 0] - intStartXY[h, 0] >= 11 && h < numIdentfied - 17)
334 stringLicense += "\n"; //当不上⼀⾏时就输出\n
335if (h == numIdentfied - 25 || h == numIdentfied - 17 || h == numIdentfied - 9)
336 stringLicense += "-"; //每8个显⽰⼀个中划线-
337 }
338//---------------------------------------END---------------------------------------------------------------------------------
339 }
340catch { }
341return stringLicense + "\n"; //对返回的结果进⾏换⾏，保证在richTextBox⽂本框显⽰的时候光标
始终在下⾏
342 }
343
344private void pictureBoxLicense_DoubleClick(object sender, EventArgs e)
345 {//通过双击控件粘贴图⽚
346try
347 {
348 IDataObject iData = Clipboard.GetDataObject(); //GetDataObject检索当前剪贴板上的数据
349if (iData.GetDataPresent(DataFormats.Bitmap))//将数据与指定的格式进⾏匹配
350 {
351// GetData检索数据并指定⼀个格式
352 Bitmap bitmapLicense = (Bitmap)iData.GetData(DataFormats.Bitmap);
353 pictureBoxLicense.Image = bitmapLicense; //加载截屏后的图⽚
354 buttonGenerate.Enabled = true; //pictureBox中新图⽚时提取按钮便可使⽤
355this.buttonGenerate.Select();
356 }
357else
358 {
359 MessageBox.Show("⽬前剪贴板中数据不是图⽚\n 请先截图再双击此处!", "Error");
360 }
361 }
362catch { }
363 }
364
365private void FormLicense_Load(object sender, EventArgs e)
366 {
367
368 }
369 }
370 }
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