How to remove shadow from LED light

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nghia nguyen
nghia nguyen 2011 年 5 月 10 日
Hi,I have a question. How can I remove the ambient light of a LED.I just want to retain the central light of that LED to determine its center.This is the image: http://www.flickr.com/photos/48230201@N02/5706940074/in/photostream Thanks for your help.
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Sean de Wolski
Sean de Wolski 2011 年 5 月 10 日
As in: just those two little circular LEDs, not the piece of paper behind them?

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Sean de Wolski
Sean de Wolski 2011 年 5 月 10 日
The LEDs are much brighter than everything else. I would guess a one shot lower threshold on the blue channel or the rgb2gray image would provide you with just the lEDs.

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