Windows Image Acquisition Library 2.0 (by Microsoft)
Introduction
This FREE imaging toolkit is available for developers who
need to develop image-enabled applications for Windows
ME and XP (Service Pack 1). A copy of the toolkit is available for download from
the Microsoft download website. A major limitation of
this toolkit is that other
versions of Windows are not supported. However, it's
FREE!
This imaging toolkit is a high-quality, full-featured image
manipulation component that provides end-to-end image
processing capabilities for Microsoft Visual Basic,
Active Server Pages and scripting languages. The WIA
Automation Layer exposes features in Windows XP Service
Pack 1 or later to make it easy to acquire images on
digital cameras, scanners, or web cameras, and to
rotate, scale, and annotate your image files.
Supported image formats include PNG, JPG, GIF, BMP and
TIFF.
Samples
The toolkit also includes samples to help developers
understand how to use the features and functions
available. The samples are:
VB 6 Samples
1. ImageFile - Demonstrates image manipulation using the ImageFile object.
2. Minimal - Smallest amount of code necessary (1 line) to select a device, select an
image, and transfer it from the device.
3. Widget - An interesting gizmo for exploring item properties and such.
Scripting Samples
1. VideoPreview.htm - Demonstrates using the Video Preview control in a webpage.
2. DeviceList.htm - Enumerates all the cameras connected to your computer and lists
their static properties.
3. DeviceList2.htm - Enumerates all the cameras connected to your computer and
opens a connection to each and then lists the root item properties.
4. browse.asp - Quick and dirty ASP page that browses the directory tree of images
and does interesting things using the ImageFile object's BinaryData property.
5. webcam.asp - Quick and dirty ASP page that displays the current image from a
connected webcam
6. imageinfo.vbs - Demonstrates using an ImageFile object from script
7. persist.wsf - Demonstrates calling RegisterPersistentEvent and
UnregisterPersistentEvent
Setup
The Ilixis Developer's Corner is providing a service to
developers by hosting this toolkit. The toolkit can be
downloaded here (Zip file - 520 Kb).
However, any support issues should be directed to Microsoft Corporation.
The toolkit contains 3 main files - wiaaut.dll,
wiaaut.chm and wiaaut.chi. Copy the .chm and .chi files
into the system help directory (normally found in
c:\windows\help) and copy the .dll file into the
system32 directory (normally found in
c:\windows\system32). The wiaaut.dll file will also need
to be registered. This can be done by issuing the
following command "regsvr32 wiaaut.dll" from
the system32 directory in the command prompt.
Developers using wiaaut.dll are granted license to freely redistribute the library with their application as detailed in the redist.txt file inside the zip.
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