3 ms·
Hi @danybittel, could you explain a bit more about the polarization filter you used to filter our the content and only let through the obstacles? I am interest
by kumarvvr 1y ago
Hi @danybittel, could you explain a bit more about the polarization filter you used to filter our the content and only let through the obstacles?
I am interested to know how it works.
Thanks.
- jnovacho 1y agoVirtually any LCD screen will produce polarized light. This is the core working principle of those screens. So if you use a polarized filter (sunglasses for example) it will completly block the image coming from the screen. You can see the effect here: https://www.reddit.com/r/mildlyinteresting/comments/crvpil/the_way_you_can_see_my_laptop_screens_polarizing/ https://www.reddit.com/r/mildlyinteresting/comments/crvpil/t... I believe this will not work with OLED screens though, but I do not have one to test this.
- PxldLtd 1y agoWe use IR Floodlights + IR absorbing film + a high speed IR camera. Works great in most lighting conditions and the screen doesn't show up on the camera.