Getting Started
Leadtools.Ocr Getting Started
Summary
.NET
.NET Framework
Java/Android
iOS and macOS
.NET
Redistributables Paths
Path |
Target Platform |
<installdir>\Bin\net |
.NET 6+ |
Dependencies
Library |
Description |
Dependencies |
Leadtools.Ocr.dll |
OCR forms library |
Leadtools.dll |
|
|
Leadtools.Document.Writer.dll |
|
|
Leadtools.Forms.Common.dll |
|
|
Leadtools.Codecs.dll |
Supported OCR Engines
Sample Programs
Demo Name |
Source Code Path |
Description |
OCR |
\Examples\OCR\DotNet\OCRCLIDemo\net |
Demonstrates OCR support. - Convert raster images to document files
- Recognize text from over 40 languages
- Spell checking and dictionary support
- Automatically detect, segment, and recognize multiple languages on the same document
- Full page analysis and zonal recognition
- Automatic document cleanup and pre-processing
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Auto Recognize |
\Examples\OCR\DotNet\OcrAutoRecognizeDemo\net |
\Bin\net\OcrAutoRecognizeDemo_Original.exe |
Demonstrates the high-level LEADTOOLS OCR Auto Recognize support. - Performs high-level OCRing from an input image file to a final document, such as PDF or DOCX.
- Convert the document in one shot.
- Various events and a logging mechanism can be used to modify and track the recognition operation.
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR |
\Examples\OCR\DotNet\OcrDemo\net |
\Bin\net\OcrDemo_Original.exe |
Demonstrates OCR support. - Convert raster images to document files
- Recognize text from over 40 languages
- Spell checking and dictionary support
- Automatically detect, segment, and recognize multiple languages on the same document
- Full page analysis and zonal recognition
- Automatic document cleanup and pre-processing
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Edit |
\Examples\OCR\DotNet\OcrEditDemo\net |
\Bin\net\OcrEditDemo_Original.exe |
Demonstrates OCR words/characters update support for all supported OCR engines. - Update words or characters in the recognized page before saving them to the desired document format.
- Delete words from the recognized page before saving them to the desired document format.
- Highlight recognized words.
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Modules |
\Examples\OCR\DotNet\OcrModulesDemo\net |
\Bin\net\OcrModulesDemo_Original.exe |
Demonstrates using the MICR, ICR, and OMR recognition modules. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Multi-Threading |
\Examples\OCR\DotNet\OcrMultithreadingDemo\net |
\Bin\net\OcrMultiThreadingDemo_Original.exe |
Demonstrates using LEADTOOLS OCR in a multi-threaded application. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Screen Capture |
\Examples\OCR\DotNet\OcrScreenCaptureDemo\net |
\Bin\net\OcrScreenCaptureDemo_Original.exe |
Demonstrates combining LEADTOOLS Screen Capture, OCR, Document Writers, and Image Viewer Control into one application. - Capture selected area, window or full-screen
- Convert to RTF using LEADTOOLS OCR engine and Document Writers
- Display the image using the LEADTOOLS Image Viewer control
- Copy RTF and image data to the clipboard
- Draw on the image using a pen or brush
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Settings |
\Examples\OCR\DotNet\OcrSettingsDemo\net |
\Bin\net\OcrSettingsDemo_Original.exe |
Demonstrates programmatically controlling the various LEADTOOLS OCR engine settings. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR TWAIN Scanning |
\Examples\OCR\DotNet\OcrTwainScanningDemo\net |
\Bin\net\OcrTwainScanningDemo_Original.exe |
Demonstrates combining OCR and TWAIN scanning into one demo. - Acquire images from a TWAIN device
- Perform OCR on the scanned image
- Save the recognition results
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Zones RubberBand |
\Examples\OCR\DotNet\OcrZonesRubberBandDemo\net |
\Bin\net\OcrZonesRubberBandDemo_Original.exe |
Demonstrates zonal OCR based on a user-defined rectangle. - Load an image from a file
- Draw a user-defined zone using the LEADTOOLS viewer control's rubber-band feature
- Perform zonal OCR based on the user-defined zone
- Save the recognition results
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OMR Processing |
\Examples\OCR\DotNet\OmrProcessingDemo\net |
\Bin\net\OmrProcessingDemo_Original.exe |
Demonstrates functionality that intelligently analyzes the bubbles to automatically determine question groups and multiple-choice answer sets so that users can rapidly define master forms. Load an image from a file. Draw a user-defined zone to select multiple bubble sheets. Compare filled in form data to master form template. |
.NET Framework
Redistributables Paths
Path |
Target Platform |
<installdir>\Bin\DotNet4\Win32 |
x86 .NET 4 or 4.5 |
<installdir>\Bin\DotNet4\x64 |
x64 .NET 4 or 4.5 |
Dependencies
Library |
Description |
Dependencies |
Leadtools.Ocr.dll |
OCR forms library |
Leadtools.dll |
|
|
Leadtools.Document.Writer.dll |
|
|
Leadtools.Forms.Common.dll |
|
|
Leadtools.Codecs.dll |
Supported OCR Engines
Sample Programs
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Auto Recognize |
\Examples\OCR\DotNet\OcrAutoRecognizeDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrAutoRecognizeDemo_Original.exe |
Demonstrates the high-level LEADTOOLS OCR Auto Recognize support. - Performs high-level OCRing from an input image file to a final document, such as PDF or DOCX.
- Convert the document in one shot.
- Various events and a logging mechanism can be used to modify and track the recognition operation.
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR |
\Examples\OCR\DotNet\OcrDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrDemo_Original.exe |
Demonstrates OCR support. - Convert raster images to document files
- Recognize text from over 40 languages
- Spell checking and dictionary support
- Automatically detect, segment, and recognize multiple languages on the same document
- Full page analysis and zonal recognition
- Automatic document cleanup and pre-processing
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Edit |
\Examples\OCR\DotNet\OcrEditDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrEditDemo_Original.exe |
Demonstrates OCR words/characters update support for all supported OCR engines. - Update words or characters in the recognized page before saving them to the desired document format.
- Delete words from the recognized page before saving them to the desired document format.
- Highlight recognized words.
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Modules |
\Examples\OCR\DotNet\OcrModulesDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrModulesDemo_Original.exe |
Demonstrates using the MICR, ICR, and OMR recognition modules. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Multi-Threading |
\Examples\OCR\DotNet\OcrMultithreadingDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrMultiThreadingDemo_Original.exe |
Demonstrates using LEADTOOLS OCR in a multi-threaded application. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Screen Capture |
\Examples\OCR\DotNet\OcrScreenCaptureDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrScreenCaptureDemo_Original.exe |
Demonstrates combining LEADTOOLS Screen Capture, OCR, Document Writers, and Image Viewer Control into one application. - Capture selected area, window or full-screen
- Convert to RTF using LEADTOOLS OCR engine and Document Writers
- Display the image using the LEADTOOLS Image Viewer control
- Copy RTF and image data to the clipboard
- Draw on the image using a pen or brush
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Settings |
\Examples\OCR\DotNet\OcrSettingsDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrSettingsDemo_Original.exe |
Demonstrates programmatically controlling the various LEADTOOLS OCR engine settings. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR TWAIN Scanning |
\Examples\OCR\DotNet\OcrTwainScanningDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrTwainScanningDemo_Original.exe |
Demonstrates combining OCR and TWAIN scanning into one demo. - Acquire images from a TWAIN device
- Perform OCR on the scanned image
- Save the recognition results
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR Zones RubberBand |
\Examples\OCR\DotNet\OcrZonesRubberBandDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrZonesRubberBandDemo_Original.exe |
Demonstrates zonal OCR based on a user-defined rectangle. - Load an image from a file
- Draw a user-defined zone using the LEADTOOLS viewer control's rubber-band feature
- Perform zonal OCR based on the user-defined zone
- Save the recognition results
|
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OMR Processing |
\Examples\OCR\DotNet\OmrProcessingDemo\fx |
\Bin\DotNet4\<Win32/x64>\OmrProcessingDemo_Original.exe |
Demonstrates functionality that intelligently analyzes the bubbles to automatically determine question groups and multiple-choice answer sets so that users can rapidly define master forms. Load an image from a file. Draw a user-defined zone to select multiple bubble sheets. Compare filled in form data to master form template. |
Demo Name |
Source Code Path |
Pre-Compiled Executable Path |
Description |
OCR SharePoint |
\Examples\OCR\DotNet\OcrSharePointDemo\fx |
\Bin\DotNet4\<Win32/x64>\OcrSharePointDemo_Original.exe |
Demonstrates SharePoint Client functionality. OCR an image and store the recognition results in a SharePoint repository. |
Supported OCR Engines
Java/Android
Redistributables Paths
Path |
Target Platform |
<installdir>\Bin\Android\x86_64 (Android) |
x86_64 Android |
<installdir>\Bin\Android\x86 (Android) |
x86 Android |
<installdir>\Bin\Android\arm64-v8a (Android) |
arm64-v8a Android |
<installdir>\Bin\Android\armeabi-v7a (Android) |
armeabi-v7a Android |
<installdir>\Bin\CDLL\Win32 (Windows) |
x86 Windows |
<installdir>\Bin\CDLL\x64 (Windows) |
x64 Windows |
<installdir>\Bin\Lib\x86 (Linux) |
x86 Linux |
<installdir>\Bin\Lib\x64 (Linux) |
x64 Linux |
Dependencies
Library |
Description |
Jars |
Native Libraries |
leadtools.ocr.jar |
OCR forms library |
leadtools.codecs.jar |
Android: |
|
|
leadtools.jar |
libleadtools.codecs.so |
|
|
|
libleadtools.ocr.so |
|
|
|
libleadtools.so |
|
|
|
iOS/macOS: |
|
|
|
Leadtools.Codecs.framework |
|
|
|
Leadtools.framework |
|
|
|
Leadtools.Ocr.framework |
|
|
|
Linux: |
|
|
|
libltfil.so |
|
|
|
libltkrn.so |
|
|
|
libltocr.so |
|
|
|
Windows: |
|
|
|
Ltfilu.dll (Win32) / Ltfilx.dll (x64) |
|
|
|
Ltkrnu.dll (Win32) / Ltkrnx.dll (x64) |
Sample Programs
Demo Name |
Source Code Path |
Description |
MICR (Android) |
\Examples\OCR\Android\MicrDemo |
Demonstrates using the MICR Code Reader to scan MICR Codes from images |
Demo Name |
Source Code Path |
Description |
OCR (Android) |
\Examples\OCR\Android\OcrDemo |
Demonstrates OCR support. Shows how to use the LEADTOOLS OCR SDK to scan and extract text from image documents |
Demo Name |
Source Code Path |
Description |
OCR (Java) |
\Examples\OCR\Java\OcrDemo |
Demonstrates OCR support. - Performs OCR on an input image.
- Output the results to any of the supported document file formats, including PDF.
- Specify the language for OCR detection.
|
Demo Name |
Source Code Path |
Description |
OCR UI (Java) |
\Examples\OCR\Java\OcrUiDemo |
Demonstrates OCR support in a desktop application. - Convert raster images to document files.
- Recognize text from over 40 languages
- Spell checking and dictionary support
- Full page analysis and Zonal recognition
- Automatic document cleanup and pre-processing
|
Supported OCR Engines
iOS and macOS
Redistributables Paths
Path |
Target Platform |
<installdir>\Bin\Xcode\XCFrameworks\iOS |
iOS |
<installdir>\Bin\Xcode\Frameworks\macOS |
macOS |
Dependencies
Library |
Description |
Dependencies |
Leadtools.Ocr.framework |
OCR forms library |
Leadtools.Kernel.framework |
|
|
Leadtools.framework |
|
|
Leadtools.Codecs.Kernel.framework |
|
|
Leadtools.Codecs.framework |
Sample Programs
Demo Name |
Source Code Path |
Description |
MICR |
\Examples\OCR\Xcode\iOS\<Objective-C/Swift>\MicrDemo |
Demonstrates using Forms Recognition and Processing to recognize bank checks. Detect the location of and recognize the data in fields from bank check images, including: - MICR data
- Payee information
- Check date
- Amount
- Signature area
- Payee information
|
Demo Name |
Source Code Path |
Description |
OCR |
\Examples\OCR\Xcode\<iOS/macOS>\<Objective-C/Swift>\OcrDemo |
Demonstrates OCR support. - Convert raster images to document files
- Recognize text from over 40 languages
- Spell checking and dictionary support
- Automatically detect, segment, and recognize multiple languages on the same document
- Full page analysis and zonal recognition
- Automatic document cleanup and pre-processing
|
Demo Name |
Source Code Path |
Description |
OCR Command-Line |
\Examples\OCR\Xcode\macOS\<Objective-C/Swift>\OcrCommandLineDemo |
Demonstrates OCR support. Recognizes an input image and saves the recognition results into one of the supported document formats: - PDF/PDFA with options for image-over-text and embedded fonts
- DOCX with options for framed text
- RTF with options for framed text
- TXT with options for formatted text
- SVG
- ALTO_XML
|
Supported OCR Engines
See Also
Cloud Services
Does your application require document recognition or conversion, but its implementation language is preventing you
from using LEADTOOLS directly? Consider using the LEADTOOLS Cloud Services Web API instead. It is a
high-powered and scalable Web API. Its hassle-free interface can be used to integrate advanced OCR, barcode, MICR,
and document conversion into any application.
Reference
Introduction
Programming with LEADTOOLS .NET OCR
Creating an OCR Engine Instance
Starting and Shutting Down the OCR Engine
OCR Spell Language Dictionaries
Working with OCR Languages
Working with OCR Pages
Working with OCR Zones
Recognizing OCR Pages
OCR Confidence Reporting
OCR Engine-specific Settings
OCR/ICR Tutorials
OCR Languages and Spell Checking
Using OMR in LEADTOOLS .NET OCR
Multi-Threading with LEADTOOLS OCR
Version History
Leadtools.Ocr Assembly Changes