C#完成身份证辨认功用的图文代码详解【C#.Net教程】,csharp,.net,身份证

这篇文章重要引见了C#身份证辨认相干手艺详解,具有肯定的参考价值，感兴趣的小伙伴们能够参考一下

近来研讨C#相干的OCR手艺，图象辨认平常C和C++这类底层言语做的比较多，C#重如果依托一些封装好的组件举行挪用，这里引见一种身份证辨认的要领。

环境搭建

下载地点：EmguCV官网

在File种别下下载这个EXE，举行装置，装置后在目录下能找响应组件，还有些运用的案例。

dll文件夹中的dll引用到C#项目中，x64，x86，tessdata对应OCR辨认的类库和言语库，我tessdata中已增加中文言语包，将这三个文件夹放入顺序实行文件夹中。

Demo

本身做的小Demo如图：身份证图片是百度上下载的

不得不说这个类库唯一弊病就是笔墨辨认率太低，图象辨认结果也不太好

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Emgu.CV;
using Emgu.CV.OCR;
using Emgu.CV.Structure;
using System.IO;

namespace EmguCV
{
 public partial class Form1 : Form
 {
  Image<Gray, Byte> imageThreshold;
  public Form1()
  {
   InitializeComponent();
   pictureBox1.Enabled = false;
  }

  private void Form1_Load(object sender, EventArgs e)
  {



  }

  private void button1_Click(object sender, EventArgs e)
  {
   //第一个参数是言语包文件夹的地点，不写默许在实行文件夹下
   Tesseract _ocr = new Tesseract(@"", "chi_sim", OcrEngineMode.TesseractOnly);
   _ocr.SetImage(imageThreshold);
   _ocr.Recognize();
   String text = _ocr.GetUTF8Text();
   this.textBox1.Text = text;
  }

  private void pictureBox2_Click(object sender, EventArgs e)
  {
   OpenFileDialog of = new OpenFileDialog();
   of.Title = "请挑选图片";
   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>
  /// 扭转校订
  /// </summary>
  /// <param name="imageInput"></param>
  /// <returns></returns>
  private Image<Gray, Byte> randon(Image<Gray, Byte> imageInput)//图象投影扭转法倾斜校订子函数定义
  {
   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度范围内的调解
   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;
  }

  private void pictureBox1_Click(object sender, EventArgs e)
  {

  }
 }
}

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