How to manually control focus level of winvideo camera

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kok wei
kok wei 2019-1-7
评论： Song Decn 2020-7-23
Hi,
I'm using a USB camera via a image acquisition toolbox.
Is there a way to manually control the focus level of the camera through MATLAB code?
This post doesn't help much in the addressing this problem:
https://www.mathworks.com/matlabcentral/answers/98257-why-am-i-unable-to-use-the-auto-focus-command-to-focus-my-dcam-camera-in-image-acquisition-toolbox-2
Anyone have any idea or further info on how to do this?
Thank you.
This is the imaq info:
dev_info = imaqhwinfo('winvideo',1)
dev_info =
struct with fields:
DefaultFormat: 'RGB24_1280x720'
DeviceFileSupported: 0
DeviceName: 'Integrated Camera'
DeviceID: 1
VideoInputConstructor: 'videoinput('winvideo', 1)'
VideoDeviceConstructor: 'imaq.VideoDevice('winvideo', 1)'
SupportedFormats: {1×27 cell}
The video info:Untitled.png

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