Automatic Exposure Algorithm Software That Came

Id now like to be able to turn it back on for a few seconds and then disable it again but any value I set for CVCAPPROPAUTOEXPOSURE doesnt seem to take yet I can open a dialog with CVCAPPROPSETTINGS and enable it from within that popup.

After I set it I can get the value and the value has changed but the camera still returns an overexposed image as if I havent changed the value.

Id be happy to build a patch for OpenCV if I could figure out how this particular camera works.

Automatic Exposure Algorithm Software That Came

Can someone point out where to start poking around in the code I know it can be done because the software that came with the camera has an exposure feature and is adjustable from their GUI.

The camera is a MicroView USB Microscope (80) from adafruit.

The next QueryFrame after that might come out with the expected value.

This might not help with your particular camera but it seemed to work with mine and it doesnt help with the original question.

First of all, Im using OpenCV 2.4.11.

At least in that version, the CVCAPPROPAUTOEXPOSURE is not implemented.

However, it turns out that the logic that handles setting CVCAPPROPEXPOSURE (at least the DirectShow-based interface used for Windows) already has the hooks necessary to restore the default values for the exposure setting.

The code is found the opencvsourcesmoduleshighguisrccapdshow.cpp in the videoInput::setVideoSettingCamera function.

I added the following code as a quick and dirty solution for restoring auto-exposure functionality: if ( (Property CameraControlExposure) (lValue 0.0) ).

Of course, really you ought to implement CVCAPPROPAUTOEXPOSURE for a proper solution, but this has worked well for my purposes.

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