Perfect Calibration Image....

[felipe.reis]

Hi, we´re having some trouble to calibrate the cmu cam, the green light appears white on the image, even when we uploaded the cfg file for the target light, can anyone post a image with a perfect calibration and the settings?!


thnx,
Felipe Reis

[ChaChee]

Our camera is having the same problems also. Any input as to how to fix it would be appreciated

[Kevin Watson]

If you're using the FIRST green light, you don't need to calibrate the camera for most lighting conditions. Just load camera.hex and the camera should find it using the default calibration values.

-Kevin

[Eldarion]

Also, if you would like to have the CMUCam GUI see the target properly, see my post at http://www.chiefdelphi.com/forums/sh...d.php?p=433127

[felipe.reis]

I was calibrating using Labview, but if theres no need to calibrate with Labview... for what that LabView´s program is used for? Do I really have to use it for something?



thnx,
Felipe Reis

[Eldarion]

Originally Posted by felipe.reis

I was calibrating using Labview, but if theres no need to calibrate with Labview... for what that LabView´s program is used for? Do I really have to use it for something?



thnx,
Felipe Reis

I have just been using the CMUCam GUI from last year--it works great!

If you know how to use LabView and want to use it instead, you could always try sending a "CR 3 2" to the camera first. This will lower the saturation value to 2, which will fix the light problem. Keep in mind that this will only work if LabView doesn't reset the camera first.

By the way, the camera communicates at 115200 baud, just use HyperTerminal.

[Joe Hershberger]

Originally Posted by Eldarion

I have just been using the CMUCam GUI from last year--it works great!

If you know how to use LabView and want to use it instead, you could always try sending a "CR 3 2" to the camera first. This will lower the saturation value to 2, which will fix the light problem. Keep in mind that this will only work if LabView doesn't reset the camera first.

By the way, the camera communicates at 115200 baud, just use HyperTerminal.

The LabVIEW CMUCam2 application does reset the camera. It also has an entry to change all of the settings for the camera, including the saturation, without the need for a terminal application.

You can also load values for all the settings from a file. 2 configuration files are packaged with the application. One is the default for this years target (a suggested base line if tweaking calibration) and the default camera settings (for typical imaging).

If you are having trouble getting your camera to track, the LabVIEW application is a way to verify that the camera is working, that the settings are tracking properly, and to prototype other code that responds to the camera's feedback.

Cheers!
-Joe

[felipe.reis]

Well, theres a little bug in the LabView program, sometimes, only sometimes when I press the grab button , the download progress bar starts to advance, but it gets stuck in the end, the image doesnt appear and we have to restart the programm....

Any idea why is it happening?

thnx

[esquared]

Originally Posted by felipe.reis

Well, theres a little bug in the LabView program, sometimes, only sometimes when I press the grab button , the download progress bar starts to advance, but it gets stuck in the end, the image doesnt appear and we have to restart the programm....

Any idea why is it happening?

thnx

You need to get the updated labview application from the ftp site (ftp://ftp.ni.com/outgoing/FRC/), the version updated on 1/17/06 fixes this issue. WE had the same problem as you, until Joe H. suggested getting the new version.

-Eric

[Denz]

We are having the same problem. It seems that the camera sees any type of light (different colours) as white light and always tracks the fluorescent lighting instead of the light source.
Do the values we load to the camera in LabVIEW affect the camera when it's running off of Kevin's code?
It should track the green light fine and not mistake it for and fluorescents even though in LabVIEW it does?

Thanks in advace

[Estrual]

Originally Posted by esquared

You need to get the updated labview application from the ftp site (ftp://ftp.ni.com/outgoing/FRC/), the version updated on 1/17/06 fixes this issue. WE had the same problem as you, until Joe H. suggested getting the new version.

-Eric

That sounds pretty useful, but is there another place to get it? Our school server is denying me access to the FTP. So, if there is another way to get it, please reply. Thanks! ~Estrual

[Denz]

Any conditions in Kevin's code that I can change so that it doesn't see the fluorescents at all?

[Alan Anderson]

So far as I can tell, the camera code from Kevin Watson already ignores fluorescent lights rather effectively. The only thing I've seen trick it has been daylight through the windows of our shop.

Estrual, if you can't convince your school's network administrator to let you get through to the NI ftp server, you'll probably need to have someone download the LabView files at home or work and bring them to your team's programming computer on a flash drive.

[Denz]

It ignors them most of the time, but sometimes if finds one.. atleast in our electrical shop it does. Any settings I can change so it doesn't see them?

[Tureyhall]

Originally Posted by esquared

You need to get the updated labview application from the ftp site (ftp://ftp.ni.com/outgoing/FRC/), the version updated on 1/17/06 fixes this issue. WE had the same problem as you, until Joe H. suggested getting the new version.

-Eric

ok, i've serched the ftp and can't find what your talking about..... help?