Delphi Pascal OCR and Barcode Recognition

High performance, royalty-free Delphi Pascal OCR and barcode recognition on Windows 32bit and 64bit

Delphi Pascal OCR Demos

Basics

Programming with Asprise OCR is very straightforward. Below is the typical source code sample in Delphi Pascal to recognize images:

program DelphiOcr;
{$APPTYPE CONSOLE}
{$R *.res}

uses
  Winapi.Windows, System.SysUtils,
  AspriseOcr in 'AspriseOcr.pas';

var
  ocrEngineHandle:LONGLONG;
  ocrResult:PAnsiChar;
begin
  try
    // 1) Load library
    DynamicLoadAocrLibrary('LIB_FOLDER\aocr.dll'); // use aocr_x64.dll for Win64 target

    // 2) One-time setup.
    func_com_asprise_ocr_setup(False);

    // 3) Start OCR engine
    ocrEngineHandle := func_com_asprise_ocr_start('eng', OCR_SPEED_FASTEST, Nil, Nil, Nil);

    // 4) Perform OCR
    ocrResult := func_com_asprise_ocr_recognize(ocrEngineHandle, 'image.png', -1, -1, -1, -1, -1,
      OCR_RECOGNIZE_TYPE_ALL, OCR_OUTPUT_FORMAT_PLAINTEXT, Nil, Nil, Nil);
    Writeln('Result: ' + ocrResult);

    // do more OCR ...

    // 5) Stop the OCR engine
    func_com_asprise_ocr_stop(ocrEngineHandle);

    DynamicUnloadAocrLibrary();
  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;
end.

With the below sample input image:

Extract Text and Barcodes in Plain Text Format

Asprise OCR and Barcode Recognition

High performance, royalty-free OCR and barcode recognition on Windows,
...
ISBN-l3, Interleaved 2 of 5, Code 39, Code 128, PDF417, and QR Code.

[[QR-Code: www.asprise.com]]
[[CODE-128: Asprise]].

XML Format Provides Information Like Confidence and Coordinates & Tables

If you need additional information like accuracy confidence and text coordinates, you can select XML as the output format. Additionally, table information like rows and cells are also available in XML.

<?xml version="1.0"?>
<asprise-ocr input="test-image.png">
  <page no="1" width="2400" height="3200" words="124" confidence="92">
    <block type="text"  x="320" y="248" width="1176" height="63" words="5" confidence="88">
Asprise OCR and Barcode Recognition
    </block>
...
    <block type="barcode" subtype="QR-Code" x="1397" y="1647" width="441" height="441">www.asprise.com</block>
    <block type="barcode" subtype="CODE-128" x="348" y="1651" width="583" height="147">Asprise</block>
  </page>
</asprise-ocr>

Click here to view the actual XML