using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Drawing.Drawing2D;
using?System.Drawing.Imaging;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Windows.Forms;
using?Tesseract;

namespace?Tesseract_OCR識別
{
????public?partial?class?Form1?:?Form
????{
????????TesseractEngine?ocr;
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????//ocr?=?new?TesseractEngine（“./tessdata“?“eng“?EngineMode.TesseractAndCube）;//設置語言???英文
????????????//ocr?=?new?TesseractEngine（“./tessdata“?“chi_sim“）;//設置語言???中文
????????????ocr?=?new?TesseractEngine（“./tessdata“?“jpn“）;//設置語言???日語
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????OpenFileDialog?filename?=?new?OpenFileDialog（）;
????????????filename.Filter?=?“All?files（*.*）|*.*|image?files（*.bmp）|*.bmp;?*.jpg;?*.gif;?*.jpeg;*.png“;
????????????filename.FilterIndex?=?2;
????????????if?（filename.ShowDialog（）?==?DialogResult.OK）
????????????{
????????????????Bitmap?bit?=?new?Bitmap（Image.FromFile（filename.FileName.ToString（）））;
????????????????//bit?=?PreprocesImage（bit）;//進行圖像處理如果識別率低可試試
????????????????Page?page?=?ocr.Process（bit）;
????????????????string?str?=?page.GetText（）;//識別后的內容
????????????????page.Dispose（）;
????????????????pictureBox1.Image?=?bit;
????????????????richTextBox1.AppendText（str）;
????????????}
????????}
????????///?

????????///?圖片顏色區分，剩下白色和黑色
????????///?

????????///?
????????///?
????????private?Bitmap?PreprocesImage（Bitmap?image）
????????{
????????????//You?can?change?your?new?color?here.?RedGreenLawnGreen?any..
????????????Color?actualColor;
????????????//make?an?empty?bitmap?the?same?size?as?scrBitmap
????????????image?=?ResizeImage（image?image.Width?*?5?image.Height?*?5）;
????????????//image.Save（@“D:\UpWork\OCR_WinForm\Preprocess_Resize.jpg“）;

????????????Bitmap?newBitmap?=?new?Bitmap（image.Width?image.Height）;
????????????for?（int?i?=?0;?i?????????????{
????????????????for?（int?j?=?0;?j?????????????????{
????????????????????//get?the?pixel?from?the?scrBitmap?image
????????????????????actualColor?=?image.GetPixel（i?j）;
????????????????????//?>?150?because..?Images?edges?can?be?of?low?pixel?colr.?if?we?set?all?pixel?color?to?new?then?there?will?be?no?smoothness?left.
????????????????????if?（actualColor.R?>?23?||?actualColor.G?>?23?||?actualColor.B?>?23）//在這里設置RGB
????????????????????????newBitmap.SetPixel（i?j?Color.White）;
????????????????????else
????????????????????????newBitmap.SetPixel（i?j?Color.Black）;
????????????????}
????????????}
????????????return?newBitmap;
????????}

????????///?

????????///?調整圖片大小和對比度
????????///?

????????///?
????????///?