Ivan Tuzikov Posted August 29, 2012 Share Posted August 29, 2012 Hello everybody. There are so-called camera lens detectors. Link for reference: (the example of camera lens detector) The question is this: is it possible to construct a smart and intelligent hidden camera (with the respective hardware and software means) which will be able to detect such detectors, recognize theirs presence and automatically mask lens system, effectively preventing its detection? You see, a friend of mine wants to buy such thing to use for example in hotels, but I believe that such purchase is unnecessary. Any ideas? Thanks for your time! Link to comment Share on other sites More sharing options...
John Cuthber Posted August 29, 2012 Share Posted August 29, 2012 Remind me to use a pinhole camera next time I'm bugging a room. Link to comment Share on other sites More sharing options...
Ivan Tuzikov Posted August 29, 2012 Author Share Posted August 29, 2012 Remind me to use a pinhole camera next time I'm bugging a room. Ahaha! LOL. Link to comment Share on other sites More sharing options...
Phi for All Posted September 2, 2012 Share Posted September 2, 2012 ! Moderator Note I'm going to move this over to Computer Science from Engineering and see if we can get some more replies. Link to comment Share on other sites More sharing options...
Iggy Posted September 2, 2012 Share Posted September 2, 2012 Hello everybody. There are so-called camera lens detectors. Link for reference: (the example of camera lens detector) The question is this: is it possible to construct a smart and intelligent hidden camera (with the respective hardware and software means) which will be able to detect such detectors, recognize theirs presence and automatically mask lens system, effectively preventing its detection? You see, a friend of mine wants to buy such thing to use for example in hotels, but I believe that such purchase is unnecessary. Any ideas? Thanks for your time! If they are detected by reflecting red light off the lens then covering the lens with a blue or green color filter would thwart the detector. Let me demonstrate what I mean... ...cover the red dot with the blue side of color 3d glasses and it will go away. The downside would of course be the camera recording in blue. Link to comment Share on other sites More sharing options...
StringJunky Posted September 3, 2012 Share Posted September 3, 2012 Would a very finely etched screen placed in front of the lens, etched side outwards, be worth trying? Anti-newton glass has such a surface...it will cause some degree of image softening depending on the distance between the lens and glass. Link to comment Share on other sites More sharing options...
Ivan Tuzikov Posted September 3, 2012 Author Share Posted September 3, 2012 If they are detected by reflecting red light off the lens then covering the lens with a blue or green color filter would thwart the detector. Let me demonstrate what I mean... ...cover the red dot with the blue side of color 3d glasses and it will go away. The downside would of course be the camera recording in blue. Well, then one can use the detector with light source or lamp which generates light of different colours, and the said filter will be bypassed, right? Link to comment Share on other sites More sharing options...
Iggy Posted September 3, 2012 Share Posted September 3, 2012 Well, then one can use the detector with light source or lamp which generates light of different colours, and the said filter will be bypassed, right? Blue light would bypass a blue filter, but I don't know if blue light would work for a lens detector. All the ones I see on the first two pages of google search results are red. It is very possible that the blue end of the spectrum doesn't work well for detecting lenses. Maybe because blue light has more diffraction from a glass lens. I don't know. Link to comment Share on other sites More sharing options...
ACUV Posted September 4, 2012 Share Posted September 4, 2012 Remind me to use a pinhole camera next time I'm bugging a room. Here is your reminder John ! Link to comment Share on other sites More sharing options...
John Cuthber Posted September 5, 2012 Share Posted September 5, 2012 Thanks, but I bought a new lens with a better anti reflection coating. Link to comment Share on other sites More sharing options...
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