Webcam is not detected

Discussions about TWAIN & WIA scanning in GdPicture.NET using GdPictureImaging.
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sureforums
Posts: 3
Joined: Wed Oct 21, 2020 2:31 pm

Webcam is not detected

Post by sureforums » Wed Oct 21, 2020 2:41 pm

Hi,

Is this required Twain driver for Webcam? Webcam is available but the webcam source is not loading in GdPictureImaging.TwainSelectSource(Handle). Please kindly do the needful. Thanks.

The scanner twain source is loading perfectly in GdPictureImaging.TwainSelectSource(Handle) but not listing Webcam.

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Fabio
Posts: 47
Joined: Thu Aug 27, 2020 9:57 am

Re: Webcam is not detected

Post by Fabio » Mon Oct 26, 2020 12:17 pm

Hello,

GdPicture viewer does not support video and audio.
So the TWAIN connection is not handled by our solution regarding this kind of device.

Best regards,
Fabio

sureforums
Posts: 3
Joined: Wed Oct 21, 2020 2:31 pm

Re: Webcam is not detected

Post by sureforums » Tue Nov 03, 2020 8:16 am

Thanks for your reply.

Can't we access webcam through GdPicture for just capturing the image? We just need to capture patient image only through Webcam using our application.

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Fabio
Posts: 47
Joined: Thu Aug 27, 2020 9:57 am

Re: Webcam is not detected

Post by Fabio » Tue Jan 05, 2021 11:30 am

Hello,

To do that you need to have a Twain driver for your digital camera.
The twain driver must be provided by the camera manufacturer.
By the way, all cameras do not provide this feature.

The most efficient way to obtain real-time video with low CPU usage without using the build-in camera preview interface is to use the Direct Show API which is for me the best way to manage real-time video from windows applications.

If you are programming in .NET you can check this project: http://directshownet.sourceforge.net/index.html

Hope it helps!

With best,
Fabio

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