Dealing with bright lighting at competitions and vision

[Thardro]

Originally Posted by RufflesRidge

Sounds like you need to lower the exposure and/or brightness on your camera or put a filter (some teams ave used sunglasses in a pinch) in front of it.

Other than sunglasses, what would you recommend to use as a filter? Should it be a particular color?

[RufflesRidge]

Originally Posted by Thardro

Other than sunglasses, what would you recommend to use as a filter? Should it be a particular color?

A "neutral density filter" would be the correct thing to reduce light entering the camera without modifying hue.

[Greg McKaskle]

If you have an image, that would go a long way towards being able to make a good suggestion.

The LV example uses aspect ration, moment of inertia, area/convext hull area, and an X and Y profile mask. None of these are expensive to calculate, and all of them help to compare analytical values of the U shape that is expected versus the computed values in your image.

Greg McKaskle

[Thardro]

Originally Posted by Greg McKaskle

If you have an image, that would go a long way towards being able to make a good suggestion.

The LV example uses aspect ration, moment of inertia, area/convext hull area, and an X and Y profile mask. None of these are expensive to calculate, and all of them help to compare analytical values of the U shape that is expected versus the computed values in your image.

Greg McKaskle

Here are a few images from on the field. Our two main issues were from cases like these two perspectives where lighting reflecting off of the tower would merge with or overpower the reflection from the LEDs or the reflection from the LEDs would not be different enough from the surrounding tower to be distinguishable using HSV values.

[ajhammond123]

Definitely change your camera settings. After playing around with our axis camera settings using a model of the goal our images went from something like what you have to an image where everything except the brightest sunlight was too dark to be anything but black, and the reflection off of the tape is a distinct shade and color unique to the LEDs you use. You would have to re-adjust HSV values in your program after doing this, but it provides an easy method of reducing the number of potential targets in your image.

[jdesmond]

Originally Posted by Thardro

Other than sunglasses, what would you recommend to use as a filter? Should it be a particular color?

You can program an exposure value, how do you implement your camera and vision processing?