Question
Why is the 'demo' adaptor missing from the list of InstalledAdaptors in Image Acquistion Toolbox 3.0 (R2007b)? In Image Acquistion Toolbox 2.1 (R2007a), there is a 'demo' adaptor listed as InstalledAdaptors imaqhwinfo ans = InstalledAdaptors: {'coreco' 'dcam' 'demo' 'winvideo'} MATLABVersion: '7.4 (R2007a)' ToolboxName: 'Image Acquisition Toolbox' ToolboxVersion: '2.1 (R2007a)' This is not the case in MATLAB R2007b. imaqhwinfo ans = InstalledAdaptors: {'coreco' 'dcam' 'winvideo'} MATLABVersion: '7.5 (R2007b)' ToolboxName: 'Image Acquisition Toolbox' ToolboxVersion: '3.0 (R2007b)'
Expert Answer
Kshitij Singh
PhD Expert
Answered Sep 12, 2026
This bug has been fixed in Release 2007a (R2007a). For previous product releases, read below for any possible workarounds:
The ''demo' adaptor is not registered by default anymore. It is possible to use it however using the following commands:
imaqregister([matlabroot '\toolbox\imaq\imaqadaptors\kit\demo\mwdemoimaq.dll']);
imaqreset
imaqhwinfo
ans =
InstalledAdaptors: {'coreco' 'dcam' 'mwdemoimaq' 'winvideo'}
MATLABVersion: '7.5 (R2007b)'
ToolboxName: 'Image Acquisition Toolbox'
ToolboxVersion: '3.0 (R2007b)'
The adaptor should work as before, but with a different name (mwdemoimaq).
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