 | | Re: detecting goal objects at a distance —Uwe Denzer
| | | | (...) Well, I knew that camera stores sell IR blocking filters but IR transmission filters? Are you sure? (What would be the purpose for normal photography?) Uwe (25 years ago, 1-Jan-00, to lugnet.robotics)
| | | | | | | | | | Re: detecting goal objects at a distance —Ben Jackson
| | | | | (...) IR Photography, of course. Lookup Kodak HIE, for example. The filters you are looking for are Wratten #87 and 87C. If you look at them they appear to be black because they pass no visible light. I believe the difference between the two is (...) (25 years ago, 1-Jan-00, to lugnet.robotics)
| | | | | | | | | | | | Re: detecting goal objects at a distance —Uwe Denzer
| | | | | (...) OK, thanks for the info. That's interesting. I'll look for it. Uwe (25 years ago, 1-Jan-00, to lugnet.robotics)
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