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Unread 06-02-2016, 17:23
seabasssl seabasssl is offline
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LifeCam overexposed
Hey all,

Last year we didn't use the USB LifeCam, as we couldn't figure out how to make the output not be overexposed.

This year, we tried plugging our 4 lifecams into a computer, and configure the settings through the lifecam software. Only one of the four cameras retains the settings, the others go back to their standard overexposed settings.
What is the trick?

Thank you!
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Unread 06-02-2016, 19:04
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Re: LifeCam overexposed
What programming language? In most, you can change the settings in the code
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Unread 06-02-2016, 19:06
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Re: LifeCam overexposed
Quote:
Originally Posted by seabasssl View Post
Hey all,

Last year we didn't use the USB LifeCam, as we couldn't figure out how to make the output not be overexposed.

This year, we tried plugging our 4 lifecams into a computer, and configure the settings through the lifecam software. Only one of the four cameras retains the settings, the others go back to their standard overexposed settings.
What is the trick?

Thank you!
What language?

In LabVIEW in the stock "Vision Processing vi" the camera is opened with several of the settings being configured. "Set Exposure" defaults to "Auto" but it can be changed to "Custom" and then a numerical exposure % can be input into the vi.
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Unread 07-02-2016, 18:59
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Re: LifeCam overexposed
Quote:
Originally Posted by Ari423 View Post
What programming language? In most, you can change the settings in the code
Quote:
Originally Posted by Alpha Beta View Post
What language?

In LabVIEW in the stock "Vision Processing vi" the camera is opened with several of the settings being configured. "Set Exposure" defaults to "Auto" but it can be changed to "Custom" and then a numerical exposure % can be input into the vi.
We use C++, but I thought the camera settings were independent of any coding?
Last edited by seabasssl : 07-02-2016 at 19:13.
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Unread 07-02-2016, 23:32
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Re: LifeCam overexposed
I am wondering how to change the Lifecam's settings also. I see the WPILib documentation on ScreenSteps says to go to the camera's IP to change its settings, but you can't do that with a USB camera.
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Unread 08-02-2016, 08:08
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Re: LifeCam overexposed
Quote:
Originally Posted by seabasssl View Post
We use C++, but I thought the camera settings were independent of any coding?
Try using the USBCamera class instead of the imaq class. USBCamera had the ability to set exposure, brightness, and white balanced.
http://first.wpi.edu/FRC/roborio/rel...USBCamera.html
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Unread 08-02-2016, 20:34
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Re: LifeCam overexposed
Quote:
Originally Posted by Schnabel View Post
Try using the USBCamera class instead of the imaq class. USBCamera had the ability to set exposure, brightness, and white balanced.
http://first.wpi.edu/FRC/roborio/rel...USBCamera.html
Thank you! It works
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