How to adjust the resolution in a VI (NI-IMAQdx) ?

[Oesen]

Hi.

I can adjust the resolution very well with the Video Mode in Measurement & Automation Explorer, but i will do it in my VI as well.

I found the property node named "Video Mode" and the problem is that i really don't know, what i have to write in it ?. I want to downscale my resolution to

160x120

Thanks in advance

[Lennard.C]

Hi Oesen,

I believe you can use IMAQdx property node as shown below:

1. To find the IMAQ property node: Functions Palate (at your block diagram) >> Vision and Motion >> NI-IMAQdx >> Property Node.
2. Right click on the Properties of the IMAQdx Property Node and select 'Change All to Write' to allow you to insert the values to your properties
3. Click on one of the properties >> Acquisition Attributes >> Height. You can do the same for Width at the other property.
4. Right click on the input arrow of the Height >> Create >> Control as shown below. Do the same for Width and you should get as the example above diagram.

Hope it works

Warmest regards,

Lennard.C

[Oesen]

Hi Lennard

Thanks for your reply.

I have tried that procedure, but it still records with 2592x1922. I still can't downscale the resolution.

Here is a snippet of my block diagram, and I have uploadet the VI as well

[MikeeB]

Hi

There is normally a property for the camera that you can edit called Video Mode. This si typically what you would change within MAX so that the camera only outputs the required resolution. Use NI IMAQdx Enumerate video modes to make sure that you can edit it on your camera and which one to select, with the property node Video Mode.

Mike

[Oesen]

If I want to use 160x120 as a resolution, what do I write as a number in the Video Mode property in my VI ?.

[MikeeB · Accepted solution]

When I run the Enumerate Video Modes VI it shows me 0(160x120), 1(320x240) .... If you run that first it should show you. You could also count which position it is in the list in MAX. (Start at 0). I would take a stab at 0.

Mike

[Oesen]

It works !!. Thank you very much Mike !

[hadikhan64@berkeley.edu]

Hi Mike,

Do you know how to adjust my video resolution in NI-IMAG?

Thanks in advance

Hadi

[hadikhan64@berkeley.edu]

Hi Oesen,

Do you know how to adjust the resolution of a video with NI-IMAQ?

Hadi

[RanaSadeghi]

Hi
quick question, how should I wire Enumerate Video Mode?