LeadTools图像处理C#阅卷系统、OCR、OMR学习之路(一)_c#中调用leadtools

今天开始学习LeadTools

官网：leadtools.gcpowertools.com.cn

官网是纯英文的，废了不少劲，终于看个大概，先建立个demo测试下

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 System.IO;
using Leadtools;
 
using Leadtools.Ocr;
using Leadtools.Document.Writer;
using Leadtools.Codecs;
 
namespace OMR_Demo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            SetLicense();
        }
 
        static void SetLicense()
        {
            string license = @"C:\Users\a\Downloads\LEADTOOLS.v22\Support\Common\License\LEADTOOLS.LIC";
            string key = File.ReadAllText(@"C:\Users\a\Downloads\LEADTOOLS.v22\Support\Common\License\LEADTOOLS.LIC.KEY");
            RasterSupport.SetLicense(license, key);
            if (RasterSupport.KernelExpired)
                MessageBox.Show("License file invalid or expired.");
            else
                MessageBox.Show("License file set successfully");
            string workDir = @"C:\MyApp\OcrTemp";
            RasterCodecs codecs = new RasterCodecs();
           // Directory.Delete(workDir, true);
 
 
            using (IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD))
            {
                Console.WriteLine("Before calling Startup, IsStarted = " + ocrEngine.IsStarted);
                ocrEngine.Startup(codecs, null, workDir, LEAD_VARS.OcrLEADRuntimeDir);
                //ocrEngine.Shutdown();
 
            }
 
        }
    }
    static class LEAD_VARS
    {
        public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
        public const string OcrLEADRuntimeDir = @"D:\system\group-office-automation\";
    }
}

运行的结果SetLicense是成功的，但是在启动Ocr引擎的时候一直提示：

查询官网发现错误是：缺少OCR组件，卡住了，猜想是肯定少安装了组件，有大神知道了欢迎支招，我先翻看官网研究吧.....