基於C#技巧完成身份證辨認功效。本站提示廣大學習愛好者：（基於C#技巧完成身份證辨認功效）文章只能為提供參考，不一定能成為您想要的結果。以下是基於C#技巧完成身份證辨認功效正文
比來研討C#相干的ORC技巧，圖象辨認普通C和C++這類底層說話做的比擬多，C#重要是依托一些封裝好的組件停止挪用，這裡引見三種身份證辨認的辦法。
一：挪用年夜公司API接口，百度、雲脈，文通科技都有相干的API引見。
二：挪用圖象處置類庫，EmguCV是OpenCV的一個跨平台的.Net封裝，該封裝也能夠被編譯到Mono平台和許可在Windows、Mac OS、Android、iPhone、iPad等多個平台上運轉
三：挪用Office2007 組件
1、證件辨認API接口
以聚合數據中的API接口為例，由於官方API沒有供給C#的挪用方法，網址以下：證件辨認接口
/// <summary>
/// 上傳圖片
/// </summary>
/// <returns></returns>
public static string CardUpload()
{
try
{
string appkey = "網站本身請求的key"; //設置裝備擺設您請求的appkey
HttpPostedFile file = HttpContext.Current.Request.Files[0];
string url = "http://api2.juheapi.com/cardrecon/upload";
var parameters = new Dictionary<string, string>();
parameters.Add("key", appkey);
parameters.Add("cardType", "2");
string result = HttpPostData(url, 60000, "pic", file.InputStream, parameters);
JObject info = JObject.Parse(JObject.Parse(result)["result"].ToString());
var cardInfo = new
{
name = info["姓名"],
card = info["國民身份號碼"]
};
return cardInfo.ToJson();
}
catch (Exception ex)
{
return ex.ToString();
}
}
/// <summary>
/// Post挪用API
/// </summary>
/// <param name="url">api地址</param>
/// <param name="timeOut">拜訪超不時間</param>
/// <param name="fileKeyName">文件參數名</param>
/// <param name="file">文件流</param>
/// <param name="stringDict">參數列表</param>
/// <returns>成果集</returns>
private static string HttpPostData(string url, int timeOut, string fileKeyName,
Stream file, Dictionary<string, string> stringDict)
{
string responseContent;
var memStream = new MemoryStream();
var webRequest = (HttpWebRequest)WebRequest.Create(url);
// 界限符
var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
// 界限符
var beginBoundary = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");
// 最初的停止符
var endBoundary = Encoding.ASCII.GetBytes("--" + boundary + "--\r\n");
// 設置屬性
webRequest.Method = "POST";
webRequest.Timeout = timeOut;
webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
//寫入開端界限符
memStream.Write(beginBoundary, 0, beginBoundary.Length);
// 寫入文件
const string filePartHeader =
"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
"Content-Type: application/octet-stream\r\n\r\n";
var header = string.Format(filePartHeader, fileKeyName, "card.jpg");
var headerbytes = Encoding.UTF8.GetBytes(header);
memStream.Write(headerbytes, 0, headerbytes.Length);
file.CopyTo(memStream);
// 寫入字符串的Key
var stringKeyHeader = "\r\n--" + boundary +
"\r\nContent-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n";
foreach (byte[] formitembytes in from string key in stringDict.Keys
select string.Format(stringKeyHeader, key, stringDict[key])
into formitem
select Encoding.UTF8.GetBytes(formitem))
{
memStream.Write(formitembytes, 0, formitembytes.Length);
}
// 寫入最初的停止界限符
memStream.Write(endBoundary, 0, endBoundary.Length);
webRequest.ContentLength = memStream.Length;
// 結構終了，履行POST辦法
var requestStream = webRequest.GetRequestStream();
memStream.Position = 0;
var tempBuffer = new byte[memStream.Length];
memStream.Read(tempBuffer, 0, tempBuffer.Length);
memStream.Close();
requestStream.Write(tempBuffer, 0, tempBuffer.Length);
requestStream.Close();
var httpWebResponse = (HttpWebResponse)webRequest.GetResponse();
using (var httpStreamReader = new StreamReader(httpWebResponse.GetResponseStream(),
Encoding.GetEncoding("utf-8")))
{
responseContent = httpStreamReader.ReadToEnd();
}
httpWebResponse.Close();
webRequest.Abort();
return responseContent;
}
2、EmguCV類庫挪用
情況搭建
下載地址：EmguCV官網
在File種別下下載這個EXE，停止裝置，裝置後在目次下能找響應組件，還有些運用的案例。
C#停止辨認，需停止圖片二值化處置和OCR挪用相干DLL可在我整頓的地址下載：360雲盤 提取碼：89f4
dll文件夾中的dll援用到C#項目中，x64，x86，tessdata對應OCR辨認的類庫和說話庫，我tessdata中已添加中文說話包，將這三個文件夾放入法式履行文件夾中。
Demo
本身做的小Demo如圖：身份證圖片是百度高低載的
相干代碼以下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Emgu.CV;
using Emgu.CV.OCR;
using Emgu.CV.Structure;
using System.IO;
namespace ImageManage
{
public partial class Form1 : Form
{
Image<Gray, Byte> imageThreshold;
public Form1()
{
InitializeComponent();
}
private void btn_convert_Click(object sender, EventArgs e)
{
//第一個參數是說話包文件夾的地址，不寫默許在履行文件夾下
Tesseract _ocr = new Tesseract("", "chi_sim", OcrEngineMode.TesseractOnly);
_ocr.Recognize(imageThreshold);
String text = _ocr.GetText();
this.textBox1.Text = text;
}
private void pictureBox1_Click(object sender, EventArgs e)
{
OpenFileDialog of = new OpenFileDialog();
of.Title = "請選擇圖片";
if (of.ShowDialog() == DialogResult.OK)
{
string file = of.FileName;
Image img = Image.FromFile(file);
pictureBox1.Image = img;
}
Bitmap bitmap = (Bitmap)this.pictureBox1.Image;
Image<Bgr, Byte> imageSource = new Image<Bgr, byte>(bitmap);
Image<Gray, Byte> imageGrayscale = imageSource.Convert<Gray, Byte>();
imageGrayscale = randon(imageGrayscale);
imageThreshold = imageGrayscale.ThresholdBinary(new Gray(100), new Gray(255));
this.pictureBox2.Image = imageThreshold.ToBitmap();
}
/// <summary>
/// 扭轉校訂
/// </summary>
/// <param name="imageInput"></param>
/// <returns></returns>
private Image<Gray, Byte> randon(Image<Gray, Byte> imageInput)//圖象投影扭轉法傾斜校訂子函數界說
{
int nwidth = imageInput.Width;
int nheight = imageInput.Height;
int sum;
int SumOfCha;
int SumOfChatemp = 0;
int[] sumhang = new int[nheight];
Image<Gray, Byte> resultImage = imageInput;
Image<Gray, Byte> ImrotaImage;
//20度規模內的調劑
for (int ang = -20; ang < 20; ang = ang + 1)
{
ImrotaImage = imageInput.Rotate(ang, new Gray(1));
for (int i = 0; i < nheight; i++)
{
sum = 0;
for (int j = 0; j < nwidth; j++)
{
sum += ImrotaImage.Data[i, j, 0];
}
sumhang[i] = sum;
}
SumOfCha = 0;
for (int k = 0; k < nheight - 1; k++)
{
SumOfCha = SumOfCha + (Math.Abs(sumhang[k] - sumhang[k + 1]));
}
if (SumOfCha > SumOfChatemp)
{
resultImage = ImrotaImage;
SumOfChatemp = SumOfCha;
}
}
return resultImage;
}
}
}
3、Office 2007組件
該組件收費並且辨認度比擬高。
情況搭建
Office 2007組件MODI，須要裝置Ofiice2007，且因為兼容性須要裝置補釘，SP1或許SP2都行，補釘下載地址以下：
SP1下載地址 SP2下載地址
裝置後掌握面板-->卸載或更新法式-->選擇Office2007-->選擇更改-->選擇添加或修復功效-->彈出上面界面，運轉響應組件。
將Office對象-->Microsoft Office Document Imaging 下的對象運轉
在C#項目中援用Com組件便可：
假如Office組件運用不是在當地法式而須要安排在IIS上，還需將運用法式的運用池的權限設置為以下圖所示：法式運用池-->高等設置-->標識
Demo
StringBuilder sb = new StringBuilder();
MODI.Document doc = new MODI.Document();
doc.Create(fullFileName);
MODI.Image image;
MODI.Layout layout;
doc.OCR(MODI.MiLANGUAGES.miLANG_CHINESE_SIMPLIFIED, true, true); // 辨認文字類型
for (int i = 0; i < doc.Images.Count; i++)
{
image = (MODI.Image)doc.Images[i];
layout = image.Layout;
sb.Append(layout.Text);
}
以上即一些C#停止身份證辨認的辦法，可依據本身項目標分歧需求停止選用。
