C# 图像基本处理和OCR_c# ocrresult result = ocr.read(input);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Diagnostics;
using OpenQA.Selenium.Appium.Windows;
using OpenQA.Selenium.Remote;
using System.IO;
using OpenQA.Selenium;
using AForge;
using AForge.Imaging;
using AForge.Imaging.Textures;
using AForge.Imaging.Filters;
using AForge.Math;
using asprise_ocr_api;
using IronOcr;
using System.Runtime.InteropServices;
 
namespace WindowsFormsApp3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        
        private void button1_Click(object sender, EventArgs e)
        {
           
            //AspriseOCR.SetUp();
            //AspriseOCR ocr = new AspriseOCR();
            //ocr.StartEngine("eng", AspriseOCR.SPEED_FASTEST);
 
            Bitmap a = new Bitmap(@"d:\4.png");
            Bitmap b = ToGray(a);
            Bitmap c = GrayReverse(b);
            //Bitmap d = ConvertTo1Bpp1(c);
            Bitmap d = GetBinaryzationImage1(c);
            d.Save(@"d:\4.bmp");
 
            //string s = ocr.Recognize(@"d:\3.bmp", -1, -1, -1, -1, -1, AspriseOCR.RECOGNIZE_TYPE_ALL, AspriseOCR.OUTPUT_FORMAT_PLAINTEXT);
            //MessageBox.Show(s);
            //ocr.StopEngine();
 
 
            //var Ocr = new AutoOcr();
            //var result = Ocr.Read(@"d:\4.bmp");
            //MessageBox.Show(result.Text);
 
            var Ocr = new AdvancedOcr()
            {
                CleanBackgroundNoise = true,
                EnhanceContrast = true,
                EnhanceResolution = true,
                Language = IronOcr.Languages.English.OcrLanguagePack,
                Strategy = IronOcr.AdvancedOcr.OcrStrategy.Advanced,
                ColorSpace = AdvancedOcr.OcrColorSpace.Color,
                DetectWhiteTextOnDarkBackgrounds = true,
                InputImageType = AdvancedOcr.InputTypes.AutoDetect,
                RotateAndStraighten = true,
                ReadBarCodes = true,
                ColorDepth = 4
            };
 
            var testImage = @"d:\4.bmp";
 
            var Results = Ocr.Read(testImage);
 
            //var Barcodes = Results.Barcodes.Select(b => b.Value);
 
            MessageBox.Show(Results.Text);
 
 
 
 
        }
 
        private Bitmap GetBinaryzationImage1(Bitmap image)
        {
            Bitmap result = image.Clone() as Bitmap;
            // 计算灰度平均值
            List<int> tempList = new List<int>();
            for (int i = 0; i < result.Width; i++)
            {
                for (int j = 0; j < result.Height; j++)
                {
                    tempList.Add(result.GetPixel(i, j).R);
                }
            }
            double average = tempList.Average();
 
 
            Color color = new Color();
            for (int i = 0; i < result.Width; i++)
            {
                for (int j = 0; j < result.Height; j++)
                {
                    color = result.GetPixel(i, j);
                    if ((color.R + color.G + color.B) / 3 > average)
                    {
                        result.SetPixel(i, j, Color.White);
                    }
                    else
                    {
                        result.SetPixel(i, j, Color.Black);
                    }
                }
            }
 
            return result;
        }
 
        public static Bitmap ToGray(Bitmap bmp)
        {
            for (int i = 0; i < bmp.Width; i++)
            {
                for (int j = 0; j < bmp.Height; j++)
                {
                    //获取该点的像素的RGB的颜色
                    Color color = bmp.GetPixel(i, j);
                    //利用公式计算灰度值
                    int gray = (int)(color.R * 0.3 + color.G * 0.59 + color.B * 0.11);
                    Color newColor = Color.FromArgb(gray, gray, gray);
                    bmp.SetPixel(i, j, newColor);
                }
            }
            return bmp;
        }
 
        public static Bitmap GrayReverse(Bitmap bmp)
        {
            for (int i = 0; i < bmp.Width; i++)
            {
                for (int j = 0; j < bmp.Height; j++)
                {
                    //获取该点的像素的RGB的颜色
                    Color color = bmp.GetPixel(i, j);
                    Color newColor = Color.FromArgb(255 - color.R, 255 - color.G, 255 - color.B);
                    bmp.SetPixel(i, j, newColor);
                }
            }
            return bmp;
        }
 
        public static Bitmap ConvertTo1Bpp1(Bitmap bmp)
        {
            int average = 0;
            for (int i = 0; i < bmp.Width; i++)
            {
                for (int j = 0; j < bmp.Height; j++)
                {
                    Color color = bmp.GetPixel(i, j);
                    average += color.B;
                }
            }
            average = (int)average / (bmp.Width * bmp.Height);
 
            for (int i = 0; i < bmp.Width; i++)
            {
                for (int j = 0; j < bmp.Height; j++)
                {
                    //获取该点的像素的RGB的颜色
                    Color color = bmp.GetPixel(i, j);
                    int value = 255 - color.B;
                    Color newColor = value > average ? Color.FromArgb(0, 0, 0) : Color.FromArgb(255,255, 255);
                    bmp.SetPixel(i, j, newColor);
                }
            }
            return bmp;
        }
 
        public static Bitmap ConvertTo1Bpp2(Bitmap img)
        {
            int w = img.Width;
            int h = img.Height;
            Bitmap bmp = new Bitmap(w, h, PixelFormat.Format1bppIndexed);
            BitmapData data = bmp.LockBits(new Rectangle(0, 0, w, h), ImageLockMode.ReadWrite,PixelFormat.Format1bppIndexed);
            for (int y = 0; y < h; y++)
            {
                byte[] scan = new byte[(w + 7) / 8];
                for (int x = 0; x < w; x++)
                {
                    Color c = img.GetPixel(x, y);
                    if (c.GetBrightness() >= 0.5) scan[x / 8] |= (byte)(0x80 >> (x % 8));
                }
 
                Marshal.Copy(scan, 0, (IntPtr)((int)data.Scan0 + data.Stride * y), scan.Length);
            }
            return bmp;
        }
 
      
 
      
    }
}