C # Implementation of New Unicom verification code recognition

In the past, I wrote an article about the implementation of automatic recharge for China Unicom recharge cards. Recently, I found that the UNICOM official website has been revised. I casually read the new verification code, which is different from the previous one, I sent a point to study his identification code. Its current verification code is as follows. Now I will explain the recognition step 1, convert the grayscale image 2, clear the 2px border 3, and split the number of verification codes (4) 4. After the above steps are taken to generate the model library, we can see the following results. The following code implements public String GetCheckString (Bitmap bitmap) {UnCodebase ud = new UnCodebase (bitmap); ud. grayByPixels (); ud. clearPicBorder (2); ud. cutMap (14, 15, 0, 0); bitmap = ud.bmp obj; // bitmap = ud. clearNoise (128, 1); String chkcode = ""; Bitmap [] arrmap = Ud. splitImg (bitmap, 4, 1); foreach (Bitmap item in arrmap) {String str = ud. getCodebybitmap (item, 128); Boolean isEques = false; foreach (String strss in code) {String [] a = strss. split (':'); if (str = a [1]) {chkcode + = a [0]; isEques = true; break ;}} if (! IsEques) {String strCurrent = ""; double max = 0.0; foreach (String strss in code) {int len1, len2, min, count = 0; String [] a = strss. split (':'); len1 = a [1]. length; len2 = str. length; min = len1; if (min> len2) {min = len2;} for (int I = 0; I <min; I ++) {if (str [I] = a [1] [I]) {count ++ ;}} double currrent = (count * 100.0/min ); if (max <currrent) {max = currrent; strCurrent = a [0]. trim () ;}} chkcode + = strCurrent. trim () ;}} return chkcode;} after these processing, the recognition success rate is over 90 + %,