Using a camera in LabVIEW / Utilisation d'une caméra dans LabVIEW

[c.thomas]

Bonjour,

J'essaye de réaliser une interface numérique avec LabVIEW, j'aimerai avoir deux écrans dans la surface avancée avec des rôles différents mais avec la même caméra. Tout d'abord, je souhaite avoir un enregistrement des images acquises avec une période de temps (exemple: toutes les dix secondes, je garde une image). Pour le premier écran (que j'ai réussi) est de filmer en continu un objet sans sauvegarder les images. Pour le deuxième écran, je souhaite utiliser les images sauvegardées pour toujours affichée la dernière image acquise.

Merci beaucoup d'avance. Je ne pense pas que mon programme soit très difficile mais comme je suis un débutant, je suis vraiment perdu.

Hello,

I am trying to make a digital interface with LabVIEW, I would like to have two screens in the "advanced surface" with different roles but with the same camera. First of all, I want to have a record of the acquired images with a period of time (example: every ten seconds I keep an image). For the first screen (which I managed) is to continuously shoot an object without saving the footage. For the second screen, I want to use the saved images to always display the last acquired image. Thank you very much in advance. I don't think my program is very difficult though as I am a beginner, I am really lost.

[Bob_Schor]

I was introduced to LabVIEW Vision after doing "regular LabVIEW", including LabVIEW Real-Time (I was handed a LabVIEW 7 routine with hundreds of undocumented sub-VIs and told "Learn how to maintain this") before I was introduced to LabVIEW Vision (a colleague asked me for help as I, by that time, was pretty good with "non-Vision" LabVIEW).  Boy, what a different I/O model!

I would strongly advise learning LabVIEW "without Vision" first, including DAQmx and the notion of timed Data Acquisition, plotting data with Charts and Graphs (particularly time-varying data using Charts), saving your data (continuously!) to disk, playing it back and plotting it as you read it.

Now you are ready to tackle LabVIEW Vision.

Alternatively, find yourself a LabVIEW Mentor, particularly one with patience and experience with LabVIEW Vision.  Or, alternatively, you can find a Mentor who is interested in learning LabVIEW Vision, and you two could "learn together".

Bob Schor

[c.thomas]

Hello Bob,

Thank you very much for your response but I would prefer to have an answer.
So if other people can help me solve this question, thank you in advance.

Cordially,

[Bob_Schor]

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@c.thomas wrote:

Thank you very much for your response but I would prefer to have an answer.
So if other people can help me solve this question, thank you in advance.

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Fair enough.  How about being more specific?

• Are you acquiring video frames, which implies the camera takes images at some fixed rate (say 30 frames/sec, or perhaps 1 frame/sec) and basically saves it (if it is to be saved) as a single file, e.g. a .mpeg?
• Alternatively, are you taking individual static images (again, at some fixed rate), but when saving the images, you save each frame as its own image, e.g. a lot of .png files?
• It sounds like you want to do some type of processing (not clear if it is based on image or other information).  A clearer description of what you want to do would be helpful.
• Sorry, I can't easily view your original post while composing this response, but are you working with a single or multiple cameras?  If more than one, please describe the purpose of each, and what you want to do with their images.

Bob Schor

[c.thomas · Accepted solution]

Hello,

This program is the resolution of the past problem. 

Thank you for helping me.

Regards,