RPA Robotic Process Automation - Select Region And Perform OCR - C# - ByteScout

RPA Robotic Process Automation – Select Region And Perform OCR – C#

  • Home
  • /
  • Articles
  • /
  • RPA Robotic Process Automation – Select Region And Perform OCR – C#

How to select region and perform OCR in C# with ByteScout Robotic Process Automation

ByteScout Robotic Process Automation: components and tools for quick RPA (Robotic Process Automation) implementation.

On-demand (REST Web API) version:
 Web API (on-demand version)

On-premise offline SDK for Windows:
 60 Day Free Trial (on-premise)

Form1.Designer.cs
      
namespace SelectRegionAndPerformOCR { partial class Form1 { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// Clean up any resources being used. /// </summary> /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1)); this.toolStrip1 = new System.Windows.Forms.ToolStrip(); this.toolStripButton1 = new System.Windows.Forms.ToolStripButton(); this.pdfViewerControl1 = new Bytescout.PDFViewer.PDFViewerControl(); this.btnRunOCR = new System.Windows.Forms.Button(); this.label1 = new System.Windows.Forms.Label(); this.toolStrip1.SuspendLayout(); this.SuspendLayout(); // // toolStrip1 // this.toolStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] { this.toolStripButton1}); this.toolStrip1.Location = new System.Drawing.Point(0, 0); this.toolStrip1.Name = "toolStrip1"; this.toolStrip1.Size = new System.Drawing.Size(971, 25); this.toolStrip1.TabIndex = 0; this.toolStrip1.Text = "toolStrip1"; // // toolStripButton1 // this.toolStripButton1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point); this.toolStripButton1.Image = ((System.Drawing.Image)(resources.GetObject("toolStripButton1.Image"))); this.toolStripButton1.ImageTransparentColor = System.Drawing.Color.Magenta; this.toolStripButton1.Name = "toolStripButton1"; this.toolStripButton1.Size = new System.Drawing.Size(114, 22); this.toolStripButton1.Text = "Load document"; this.toolStripButton1.Click += new System.EventHandler(this.toolStripButton1_Click); // // pdfViewerControl1 // this.pdfViewerControl1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right))); this.pdfViewerControl1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; this.pdfViewerControl1.Location = new System.Drawing.Point(12, 28); this.pdfViewerControl1.MouseMode = Bytescout.PDFViewer.MouseMode.Selection; this.pdfViewerControl1.Name = "pdfViewerControl1"; this.pdfViewerControl1.RegistrationKey = null; this.pdfViewerControl1.RegistrationName = null; this.pdfViewerControl1.ResetRotationOnPageChange = false; this.pdfViewerControl1.Scale = 100; this.pdfViewerControl1.SelectionColor = System.Drawing.Color.Red; this.pdfViewerControl1.ShowImageObjects = true; this.pdfViewerControl1.ShowTextObjects = true; this.pdfViewerControl1.ShowVectorObjects = true; this.pdfViewerControl1.Size = new System.Drawing.Size(766, 490); this.pdfViewerControl1.TabIndex = 1; // // btnRunOCR // this.btnRunOCR.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right))); this.btnRunOCR.Enabled = false; this.btnRunOCR.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point); this.btnRunOCR.Location = new System.Drawing.Point(784, 77); this.btnRunOCR.Name = "btnRunOCR"; this.btnRunOCR.Size = new System.Drawing.Size(175, 39); this.btnRunOCR.TabIndex = 2; this.btnRunOCR.Text = "Run OCR"; this.btnRunOCR.UseVisualStyleBackColor = true; this.btnRunOCR.Click += new System.EventHandler(this.btnRunOCR_Click); // // label1 // this.label1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right))); this.label1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point); this.label1.Location = new System.Drawing.Point(784, 28); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(175, 46); this.label1.TabIndex = 3; this.label1.Text = "Load document, select region and press \"Run OCR\" button"; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(971, 530); this.Controls.Add(this.label1); this.Controls.Add(this.btnRunOCR); this.Controls.Add(this.pdfViewerControl1); this.Controls.Add(this.toolStrip1); this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "Form1"; this.toolStrip1.ResumeLayout(false); this.toolStrip1.PerformLayout(); this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.ToolStrip toolStrip1; private System.Windows.Forms.ToolStripButton toolStripButton1; private Bytescout.PDFViewer.PDFViewerControl pdfViewerControl1; private System.Windows.Forms.Button btnRunOCR; private System.Windows.Forms.Label label1; } }

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Robotic Process Automation Home Page

Explore ByteScout Robotic Process Automation Documentation

Explore Samples

Sign Up for ByteScout Robotic Process Automation Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Form1.cs
      
using System; using System.Drawing; using System.Windows.Forms; using Bytescout.PDFExtractor; namespace SelectRegionAndPerformOCR { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void toolStripButton1_Click(object sender, EventArgs e) { using (OpenFileDialog openFileDialog = new OpenFileDialog()) { openFileDialog.Title = @"Open Document"; openFileDialog.Filter = @"All Supported Formats|*.pdf;*.jpg;*.jpeg;*.png;*.tif;*.tiff;*.bmp|PDF Files (*.pdf)|*.pdf|Image Files (*.jpg;*.png;*.tif;*.tiff;*.bmp)|*.jpg;*.jpeg;*.png;*.tif;*.tiff;*.bmp|All Files|*.*"; if (openFileDialog.ShowDialog() == DialogResult.OK) { pdfViewerControl1.InputFile = openFileDialog.FileName; btnRunOCR.Enabled = true; } } } private void btnRunOCR_Click(object sender, EventArgs e) { TextExtractor extractor = new TextExtractor(); extractor.RegistrationName = "demo"; extractor.RegistrationKey = "demo"; // Load sample PDF document extractor.LoadDocumentFromFile(pdfViewerControl1.InputFile); // Enable Optical Character Recognition (OCR) // in .Auto mode (SDK automatically checks if needs to use OCR or not) extractor.OCRMode = OCRMode.Auto; // Set the location of "tessdata" folder containing language data files extractor.OCRLanguageDataFolder = @"c:\Program Files\Bytescout PDF Extractor SDK\net4.00\tessdata\"; // Set OCR language extractor.OCRLanguage = "eng"; // "eng" for english, "deu" for German, "fra" for French, "spa" for Spanish etc - according to files in /tessdata // Find more language files at https://github.com/tesseract-ocr/tessdata/tree/3.04.00 // Set PDF document rendering resolution extractor.OCRResolution = 300; // Set the extraction area to the viewer's selection rectangle RectangleF[] selection = pdfViewerControl1.SelectionInPoints; if (selection.Length > 0) extractor.SetExtractionArea(selection[0]); // Show wait cursor Cursor = Cursors.WaitCursor; try { // Perform OCR and save result to file extractor.SavePageTextToFile(pdfViewerControl1.CurrentPageIndex, "result.txt"); } finally { // Revert cursor to default Cursor = Cursors.Default; } // Cleanup extractor.Dispose(); // Open output file in default associated application System.Diagnostics.Process.Start("result.txt"); } } }

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Robotic Process Automation Home Page

Explore ByteScout Robotic Process Automation Documentation

Explore Samples

Sign Up for ByteScout Robotic Process Automation Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Program.cs
      
using System; using System.Collections.Generic; using System.Linq; using System.Windows.Forms; namespace SelectRegionAndPerformOCR { static class Program { /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); } } }

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Robotic Process Automation Home Page

Explore ByteScout Robotic Process Automation Documentation

Explore Samples

Sign Up for ByteScout Robotic Process Automation Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

SelectRegionAndPerformOCR.csproj
      
<?xml version="1.0" encoding="utf-8"?> <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" /> <PropertyGroup> <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform> <ProjectGuid>{6A7F695C-A9C0-4A00-8E07-57DBB26EB5EB}</ProjectGuid> <OutputType>WinExe</OutputType> <RootNamespace>SelectRegionAndPerformOCR</RootNamespace> <AssemblyName>SelectRegionAndPerformOCR</AssemblyName> <TargetFrameworkVersion>v4.0</TargetFrameworkVersion> <FileAlignment>512</FileAlignment> </PropertyGroup> <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "> <PlatformTarget>AnyCPU</PlatformTarget> <DebugSymbols>true</DebugSymbols> <DebugType>full</DebugType> <Optimize>false</Optimize> <OutputPath>bin\Debug\</OutputPath> <DefineConstants>DEBUG;TRACE</DefineConstants> <ErrorReport>prompt</ErrorReport> <WarningLevel>4</WarningLevel> </PropertyGroup> <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <PlatformTarget>AnyCPU</PlatformTarget> <DebugType>pdbonly</DebugType> <Optimize>true</Optimize> <OutputPath>bin\Release\</OutputPath> <DefineConstants>TRACE</DefineConstants> <ErrorReport>prompt</ErrorReport> <WarningLevel>4</WarningLevel> </PropertyGroup> <ItemGroup> <Reference Include="Bytescout.PDFExtractor, Version=9.1.0.3170, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL"> <SpecificVersion>False</SpecificVersion> <HintPath>..\..\..\Program Files\Bytescout PDF Extractor SDK\net4.00\Bytescout.PDFExtractor.dll</HintPath> </Reference> <Reference Include="Bytescout.PDFExtractor.OCRExtension, Version=9.1.0.3170, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL"> <SpecificVersion>False</SpecificVersion> <HintPath>..\..\..\Program Files\Bytescout PDF Extractor SDK\net4.00\Bytescout.PDFExtractor.OCRExtension.dll</HintPath> </Reference> <Reference Include="Bytescout.PDFViewer, Version=9.1.0.3170, Culture=neutral, PublicKeyToken=f7dd1bd9d40a50eb, processorArchitecture=MSIL"> <SpecificVersion>False</SpecificVersion> <HintPath>..\..\..\Program Files\Bytescout PDF Viewer SDK\net4.00\Bytescout.PDFViewer.dll</HintPath> </Reference> <Reference Include="System" /> <Reference Include="System.Core" /> <Reference Include="System.Xml.Linq" /> <Reference Include="System.Data" /> <Reference Include="System.Deployment" /> <Reference Include="System.Drawing" /> <Reference Include="System.Windows.Forms" /> <Reference Include="System.Xml" /> </ItemGroup> <ItemGroup> <Compile Include="Form1.cs"> <SubType>Form</SubType> </Compile> <Compile Include="Form1.Designer.cs"> <DependentUpon>Form1.cs</DependentUpon> </Compile> <Compile Include="Program.cs" /> <Compile Include="Properties\AssemblyInfo.cs" /> <EmbeddedResource Include="Form1.resx"> <DependentUpon>Form1.cs</DependentUpon> </EmbeddedResource> <EmbeddedResource Include="Properties\Resources.resx"> <Generator>ResXFileCodeGenerator</Generator> <LastGenOutput>Resources.Designer.cs</LastGenOutput> <SubType>Designer</SubType> </EmbeddedResource> <Compile Include="Properties\Resources.Designer.cs"> <AutoGen>True</AutoGen> <DependentUpon>Resources.resx</DependentUpon> </Compile> <None Include="Properties\Settings.settings"> <Generator>SettingsSingleFileGenerator</Generator> <LastGenOutput>Settings.Designer.cs</LastGenOutput> </None> <Compile Include="Properties\Settings.Designer.cs"> <AutoGen>True</AutoGen> <DependentUpon>Settings.settings</DependentUpon> <DesignTimeSharedInput>True</DesignTimeSharedInput> </Compile> </ItemGroup> <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> </Project>

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Robotic Process Automation Home Page

Explore ByteScout Robotic Process Automation Documentation

Explore Samples

Sign Up for ByteScout Robotic Process Automation Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

SelectRegionAndPerformOCR.sln
      
Microsoft Visual Studio Solution File, Format Version 12.00 # Visual Studio 15 VisualStudioVersion = 15.0.27703.2047 MinimumVisualStudioVersion = 10.0.40219.1 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SelectRegionAndPerformOCR", "SelectRegionAndPerformOCR.csproj", "{6A7F695C-A9C0-4A00-8E07-57DBB26EB5EB}" EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU Release|Any CPU = Release|Any CPU EndGlobalSection GlobalSection(ProjectConfigurationPlatforms) = postSolution {6A7F695C-A9C0-4A00-8E07-57DBB26EB5EB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU {6A7F695C-A9C0-4A00-8E07-57DBB26EB5EB}.Debug|Any CPU.Build.0 = Debug|Any CPU {6A7F695C-A9C0-4A00-8E07-57DBB26EB5EB}.Release|Any CPU.ActiveCfg = Release|Any CPU {6A7F695C-A9C0-4A00-8E07-57DBB26EB5EB}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE EndGlobalSection GlobalSection(ExtensibilityGlobals) = postSolution SolutionGuid = {B4740E27-9001-4E5D-AABF-0EE4D43A2AC8} EndGlobalSection EndGlobal

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Robotic Process Automation Home Page

Explore ByteScout Robotic Process Automation Documentation

Explore Samples

Sign Up for ByteScout Robotic Process Automation Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

VIDEO

ON-PREMISE OFFLINE SDK

60 Day Free Trial or Visit ByteScout Robotic Process Automation Home Page

Explore ByteScout Robotic Process Automation Documentation

Explore Samples

Sign Up for ByteScout Robotic Process Automation Online Training

ON-DEMAND REST WEB API

Get Your API Key

Explore Web API Docs

Explore Web API Samples

Tutorials:

prev
next