Image acquisition with 3 USB cameras causing too much memory/cpu usages

[hart]

Dear Kabul M,

Sorry for late reply. Herewith I attached my code for your evaluation

thanks,

hart

[C_L_O_U_D]

Hi Hart

Now I'm curious. What exactly your VI does? What is it for? 

Incredible: I am working on a project just like yours, but in mine I have to process the images with Vision Express. Basically it snap one pic from the first usb camera and process it. If it 'capture' something different (human movement) in the place, It have to start recording video into a file. If don't, go to the second usb camera and so on.

I'm a beginner in labview and havin' a lot of troubles dealing with it.

If I can get any kind of help, I will be grateful. I´ve tryed to open your llb but it shows several warnings (subVI that is missing).

Tks

(PS: Sorry 'bout my english. It isn't very good.)

[hart]

Dear Michelle, Here I had attached my code in LLB format. The main program is "Mecron_2007(USB-1024x768).vi".

I use Labview 7.1. Could you please evaluate/check my code for any incorrect programming that could cause the memory leak problem?

thank you very much.

regards,

hart

[hart · Accepted solution]

Dear Michelle,

I've posted my code (.vi) which was programmed by Labview ver7.1. Have you check any problems with my cod, so that I can solve the  problem.

Thank you for your kind advice.

Regards,

hart

[hart]

Dear Muks,

I've already posted my code last 2 weeks, seems like nobody reply. So, has anyone checked my code? Anyway, I would like to thanks for any advice given. Do you know what is actually problem with my code?

Regards,

hart

[KrisnaWisnu]

Hi Hart,

Did you solve the problems?

If not, please allow me to ask few questions:

1. Is it necessary for you to perform continous acquisition (Grab) in three cameras at once?

2. Have you tried to use TV Tuner as suggested in the early post? it sounds an interesting working around.

Currently, from the information that you described, I am suspecting the cause of the problem is because the continous acquisition from three cameras which overload the memory buffer. Looking forward for your reply.

Sincerely,

Krisna Wisnu

[Klattan]

Dear hart,

I am also trying to capture images with 2 USB cameras (HP web camera) located at 2 different positions.

But i could not connect both at a time. Can you share your experience?

Rgds,

Klattan

[hart]

NI IMAQ USB does not support simultenous image capturing, that is why you couldn't connect 2 cameras at a same time. Anyway you can initialize/connect a camera one at a time.

Thank you,

Hart