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讀取圖片驗證碼

以前公司業務人員手動操作，一天也只能獲取1000來條數據，通過程序獲得了非常大的改觀。程序目的是自動驗證登錄并查詢獲取相關信息，對驗證碼上每個字顯示的寬度有要求，需要事先預設好，因為需要將驗證碼圖片上的字分別裁剪單獨分析。當然一般一個網站的驗證碼寬度都相對固定。

package com.xiaohang.readcode;
2

import java.awt.*;
4

import java.awt.image.BufferedImage;
5

import java.io.*;
6

import java.net.URL;
7

import javax.imageio.*;
8

public class ImageCode {
10

BufferedImage imd; // 待識別圖像
11

private int iw, ih; // 圖像寬和高
13

//public final static String path = "E:\\codeimages\\1.bmp";
15

public static void main(String []args){
17

try{
19

ImageCode app = new ImageCode();
21

//String s = app.getImageNum("http://*****.cjn.cn/gcode.act");
23

String s = app.getImageNum("E:\\codeimages\\1.bmp");
24

System.out.println("result is : " + s);
25

}catch(Exception ex)
27

{
28

ex.printStackTrace();
29

}
30

}
31

public String getImageNum(String file) {
33

StringBuffer sb = new StringBuffer("");
35

try {
36

// imd = ImageIO.read(new URL(file)); // 用ImageIO的靜態方法讀取圖像
37

imd = ImageIO.read(new File(file));
38

BufferedImage newim[] = new BufferedImage[4];
39

int[] x = new int[4];
40

// 將圖像分成4塊，因為要處理的文件都有四個數字
41

newim[0] = imd.getSubimage(5, 0, 10, 15);
42

newim[1] = imd.getSubimage(18, 0, 10, 15);
43

newim[2] = imd.getSubimage(31, 0, 10, 15);
44

newim[3] = imd.getSubimage(44, 0, 10, 15);
45

for (int k = 0; k < 4; k++) {
47

x[k] = 0;
48

// ImageIO.write(newim[k], "JPEG", new File("E:\\codeimages\\"+k+".jpeg"));
49

this.iw = newim[k].getWidth(null);
50

this.ih = newim[k].getHeight(null);
51

int[] pix = new int[iw * ih];
52

// 二進制圖像，將像數讀取出來，轉換成0、1圖像數組
53

for (int i = 0; i < ih; i++) {
55

for (int j = 0; j < iw; j++) {
56

pix[i * (iw) + j] = newim[k].getRGB(j, i);
57

String code = String.valueOf(pix[i * (iw) + j]);
58

if (code.length() >= 8)
59

pix[i * (iw) + j] = 1;
60

else
61

pix[i * (iw) + j] = 0;
62

x[k] = x[k] + pix[i * (iw) + j];
64

}
65

}
66

// 得到匹配的數字
68

int r = this.getMatchNum(pix);
69

sb.append(r);
70

// System.out.println("x=" + x[k]);
71

}
72

} catch (Exception ex) {
74

ex.printStackTrace();
75

}
76

return sb.toString();
77

}
78

static int[][] value = {
80

// 0
81

{
82

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
83

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
84

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
85

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
86

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
87

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
88

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
89

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
90

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
91

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
92

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
93

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
94

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
95

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
96

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
97

},
98

// 1
99

{
100

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
101

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
102

0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
103

0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
104

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
105

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
106

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
107

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
108

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
109

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
110

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
111

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
112

0, 0, 0, 1, 1, 1, 1, 1, 0, 0,
113

0, 0, 0, 1, 1, 1, 1, 1, 0, 0,
114

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
115

},
116

// 2
117

{
118

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
119

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
120

0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
121

0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
122

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
123

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
124

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
125

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
126

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
127

0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
128

0, 0, 1, 1, 0, 0, 0, 0, 0, 0,
129

0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
130

0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
131

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
132

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
133

},
134

135

136

// 3
137

{
138

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
139

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
140

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
141

0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
142

0, 0, 1, 0, 0, 0, 1, 1, 0, 0,
143

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
144

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
145

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
146

0, 0, 0, 0, 1, 1, 1, 1, 0, 0,
147

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
148

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
149

0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
150

0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
151

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
152

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
153

},
154

// 4
155

{
156

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
157

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
158

0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
159

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
160

0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
161

0, 0, 0, 0, 1, 1, 1, 0, 0, 0,
162

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
163

0, 0, 1, 1, 0, 1, 1, 0, 0, 0,
164

0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
165

0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
166

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
167

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
168

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
169

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
170

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
171

},
172

// 5
173

{
174

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
175

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
176

0, 0, 0, 1, 1, 1, 1, 1, 0, 0,
177

0, 0, 0, 1, 1, 1, 1, 1, 0, 0,
178

0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
179

0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
180

0, 0, 1, 0, 1, 1, 1, 0, 0, 0,
181

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
182

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
183

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
184

0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
185

0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
186

0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
187

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
188

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
189

},
190

// 6
191

{
192

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
193

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
194

0, 0, 0, 1, 1, 1, 1, 1, 0, 0,
195

0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
196

0, 0, 1, 1, 0, 0, 0, 0, 0, 0,
197

0, 0, 1, 1, 0, 0, 0, 0, 0, 0,
198

0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
199

0, 0, 1, 1, 1, 1, 1, 0, 0, 0,
200

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
201

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
202

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
203

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
204

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
205

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
206

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
207

},
208

// 7
209

{
210

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
211

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
212

0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
213

0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
214

0, 1, 0, 0, 0, 0, 1, 1, 0, 0,
215

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
216

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
217

0, 0, 0, 0, 0, 1, 1, 0, 0, 0,
218

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
219

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
220

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
221

0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
222

0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
223

0, 0, 0, 1, 1, 0, 0, 0, 0, 0,
224

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
225

},
226

// 8
227

{
228

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
229

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
230

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
231

0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
232

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
233

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
234

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
235

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
236

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
237

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
238

0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
239

0, 0, 1, 1, 1, 1, 1, 1, 0, 0,
240

0, 0, 0, 1, 1, 1, 1, 0, 0, 0,
241

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
242

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
243

},
244

// 9
245

{
246

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
247

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
248

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
249

0, 0, 0, 1, 0, 0, 1, 0, 0, 0,
250

0, 0, 1, 0, 0, 0, 0, 1, 0, 0,
251

0, 0, 1, 0, 0, 0, 0, 1, 0, 0,
252

0, 0, 1, 0, 0, 0, 0, 1, 0, 0,
253

0, 0, 0, 1, 0, 0, 1, 1, 0, 0,
254

0, 0, 0, 0, 1, 1, 0, 1, 0, 0,
255

0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
256

0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
257

0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
258

0, 0, 1, 1, 0, 0, 0, 0, 0, 0,
259

0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
260

0, 0, 0, 0, 0, 0, 0, 0, 0, 0
261

} };
262

263

// 圖像像素相減去最小絕對值得到最接近結果
264

public int getMatchNum(int[] pix){
265

266

int result = -1;
267

int temp = 100;
268

int x;
269

for(int k = 0 ; k < 10 ; k++){
270

271

x = 0 ;
272

for(int i = 0 ; i < 150 ; i++){ // lenght=120
273

x = x+Math.abs(pix[i] - value[k][i]); // 取絕對值
274

}
275

276

if(x < temp){
277

temp = x;
278

result = k;
279

}
280

}
281

return result;
282

}
283

284

285

}
286

原創文章，轉載請注明出處。
http://www.tkk7.com/beijing2008/articles/285556.html

posted on 2009-07-05 15:28 .Sun 閱讀(851) 評論(1) 編輯收藏

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