3 ms·
The article is also a bit optimistic in regards to outdoors use, with direct sunlight exposure. The sensors I tested in the past just didn't work at all.
by stefan_ 6y ago
The article is also a bit optimistic in regards to outdoors use, with direct sunlight exposure. The sensors I tested in the past just didn't work at all.
- cpgxiii 6y agoYou can absolutely make ToF sensors work outdoors in direct sunlight, but you need to operate at different frequencies that require more expensive emitters and detectors to avoid being saturated by light from the sun.
- hairytrog 6y agoWhich sensor was that stefan_? maybe I worked on it
- rzw2 6y agoThere are two issues with sunlight and iToF. The sunlight photons saturate the pixel, and you get no useful measurement. The dominant noise source of iToF is photon shot noise [1], so sunlight photons contribute heavily to noise. Increase your laser power, use better optical notch filters, decrease the sensor integration time, and do more image filtering. I'm a cofounder at Chronoptics and we've developed a sunlight capable ToF camera, https://youtu.be/7vMI37S0w3Q https://youtu.be/7vMI37S0w3Q [1] https://en.wikipedia.org/wiki/Shot_noise https://en.wikipedia.org/wiki/Shot_noise