ImageEn DLLs


There are four standard DLL's of ImageEn. Only one is needed.

DLL Platform Description
ielib32.dll 32bit Adds support for digital camera raw formats and faster image I/O performance
ielib64.dll 64bit Adds improved image feature support, including digital camera raw formats
IEVision.dll 32bit Adds Advanced features, like OCR, barcode recognition and facial recognition
IEVision64.dll 64bit Adds Advanced features, like OCR, barcode recognition and facial recognition

You need only distribute one of these DLL's with your application, because:
- IEVision.dll (32bit) includes all code of ielib32.dll
- IEVision64.dll (64bit) includes all code of ielib64.dll

You can register the plug-ins using RegisterPlugIns and check availability using ActivePlugIns.
More information is available on distributing IEVision.

Note: Versions prior to v6.1.0 used dcraw.dll for digital camera raw image support. From v6.1.0, use ielib*.dll or ievision*.dll instead.


ielib32.dll is an optional library for ImageEn applications, but it is highly recommended because it adds
- Better support for digital camera raw formats
- Optimized loading code for JPEG, PNG and JPEG2000, which is approximately 30% faster than the native Delphi code

Ideally ielib32.dll should be placed in the same folder as your EXE, but it can also be located on the system path.


ImageEn can build 64bit applications with Delphi/C++ Builder XE2 and newer. It is highly recommended that you ship the library, ielib64.dll, with your application. If ielib64.dll cannot be found:

- JPEG2000 images are unsupported
- JPEG will fallback to loading/saving via WIC (Windows) and may not include some meta-data
- PNG will fallback to loading/saving via WIC (Windows)
- Camera RAW will fallback to loading via WIC (Windows), which does not support as many RAW formats

Ideally ielib64.dll should be placed in the same folder as your EXE, but it can also be located on the system path.

File Support Overview

The engine used to load image formats depends on the following properties:
- JPEGEngine
- PNGEngine
- CameraRawEngine
- JPEG2000Engine

By default, they are as follows:
Configuration JPEG PNG Camera RAW Other Images
32bit with DLL DLL DLL DLL Native
32bit without DLL Native Native WIC (not all formats supported) Native
64bit with DLL DLL DLL DLL Native
64bit without DLL WIC WIC WIC (not all formats supported) Native


// Force use of IELib DLL for improved performance
// ImageEn will attempt to load the DLL even if it's not in the EXE folder. If the DLL isn't found or is an old version, an error will be raised
IEGlobalSettings().JPEGEngine := ieenDLL;
IEGlobalSettings().PNGEngine := ieenDLL;
IEGlobalSettings().JPEG2000Engine := ieenDLL;
IEGlobalSettings().CameraRawEngine := ieenDLL;

// Use IELib DLL if found in the EXE folder, otherwise fall back to Native or WIC
// Note: This is the default setting
IEGlobalSettings().JPEGEngine := ieenAuto;
IEGlobalSettings().PNGEngine := ieenAuto;
IEGlobalSettings().JPEG2000Engine := ieenAuto;
IEGlobalSettings().CameraRawEngine := ieenAuto;

Engine Performance

DLL Version History

You should use the DLL version that matches your release of ImageEn:
Date ImageEn Release IELib DLL Version IEVision DLL Version
13 Dec 2017 7.5.0 4.0.0 4.0.0
1 Jul 2018 8.0.0 4.5.0 4.5.0
10 Jul 2018 8.0.1 4.5.0 4.5.0
17 Sep 2018 8.1.0 4.5.0 4.5.0
1 Oct 2018 8.1.1 4.5.2 4.5.2
26 Nov 2018 8.1.2 4.5.2 4.5.2
24 Feb 2019 8.3.0 5.0.0 5.0.0
21 Apr 2019 8.5.0 5.1.0 5.1.0
10 Jun 2019 8.6.0 5.1.0 5.1.0B
13 Sep 2019 8.7.0 5.1.0 5.1.0B
4 Nov 2019 8.7.5 5.1.0 5.1.0B
24 Nov 2019 8.7.6 5.1.1 5.1.1
12 Apr 2020 9.0.0 5.2.0 5.2.0
27 May 2020 9.1.0 5.3.0 5.3.0
20 Jun 2020 9.1.1 5.3.0 5.3.0B
25 Sep 2020 9.2.0 5.4.0 5.4.0
17 Nov 2020 9.2.6 5.4.1 5.4.1
20 Jan 2021 9.3.0 5.4.1 5.4.1
17 Feb 2021 9.3.1 5.4.2 5.4.2
20 Apr 2021 10.0.0 5.5.0 5.5.0

Other Plug-Ins

ImageEn supports other plug-ins for adding formats and functionality. These include:
- PDFium: Viewing and manipulation of PDF files
- ImageMagick: Support for a wider range of image formats

You can download the plug-ins from:

See Also

- RegisterPlugIns
- ActivePlugIns
- IELibAvailable
- IEVision DLL