LabVIEW
IMAQdx and camera does not appear in MAX
@Pukhtun_Yum wrote:
I have measurement and automation version of 2021 but my LabView and IMAQ, IMAQdx has 2017 version, is it because of that I cannot see the camera ?
No. The FLIR Cameras use a proprietary USB protocol that IMAQdx doesn't (and can't) know. You need to install a driver from FLIR that makes your camera appear as a DirectShow device in Windows, then you can access it as such in NI-MAX and LabVIEW IMAQdx.
Supposedly most FLIR USB-2 cameras are based around a sensor from Point Grey and you will liley need to install the FlyCapture driver from them, but as you have already seen in the other thread you started, this seems to be not an easy solution and you are even then not able to do more than just grab some images. And that is not so surprising since the DirectShow driver interface is mostly meant to be used for web cameras, where all you do is grab some pics. It usually does not allow to change many, if any, settings of a camera at all.
Well, there is no other specific standard to transfer temperature values directly. IR cameras work the same as any camera, but except that they transfer numeric values for RGB, they transfer numeric values for IR light.
Your image that you get from the camera does unfortunately encode the temperature into RGB values. Great for direct human interaction, a little more cumbersome for automated machine analysis.
Basically you have to determine the RGB value at the point in question (which doesn't quite require OCR but simply determining the geometric location of the point of interest) then interpolate that into a scale that is setup according to the values in the bar at the right side of your image. And yes you could go and start to try to detect that bar, the numbers at the top and bottom and then build the interpolation array from the colors in between, but that will start to get a major project of its own, with very shaky results whenever the slightest change in the camera provided image happens.
Professional automated IR measurements use industrial IR cameras that directly can provide you a simple 8 or 16 bit grey-scale image that corresponds to the temperature you want to know according to preset min and max temperature limits. Maybe some of the higher end FLIR cameras provide that too, their lower end consumer market oriented devices are meant for quick human visual inspection, not automated measurements.
You can, but depending on the actual temperature at that point, the color that forms the background will be often very different and that makes OCR rather tricky.
And what is the point of automating the measurement when you still have to position the point of interest manually?
