How to set different device formats as provided by the Image Acquisition Toolbox

Hello,

my camera is a PointGrey GS3-U3-23S6M and I want to record about 1000 Fps, to do so I have to reduce the resolution, which is no problem in the software provided by PointGrey. Lower the resolution -> higher Fps.

Now if I reduce the resolution (Region of Interest) in the Image Acuisition Toolbox, Matlab doesn't give me the option to increase the Fps. I want to either set the right parameters for the camera via the provided software an then load them in Matlab or kind of refresh the toolbox so if I reduce the resolution I get to increase the Fps.

I'm using Matlab R2017b with the newest Toolbox and the Hardware Support Package for the Camera is installed.

This is my first question here so if I forgot to provide any Information or did sth wrong please tell me.

Thanks in advance! Marius

Answer 1

[Walter Roberson]

See https://www.mathworks.com/help/imaq/videoresolution.html

[Marius Weber]

Thanks for the answer! But when i try to change the Video Resolution i get this Error:

 vid.VideoResolution = [20 20]
Error using imaqdevice/subsasgn (line 33)
Attempt to modify read-only property: 'VideoResolution'.
Use IMAQHELP(OBJ, 'VideoResolution') for information.

I think it's read only. Can i change that?

[Walter Roberson]

You need to set it at the time of the videoinput() call that selected the device; you will need to set it to one of the sizes supported by the hardware, which you should be able to investigate with imaqhwinfo()

[Marius Weber]

Sorry for the late Answer, I was working on an other project.

I did that, but there I can only see the options I have in the Image Acquisition Toolbox interface as well and those resolutions are too big for my desired framerate