4 ms·
If you have trouble measuring your pupils distance (which is hard), you can also just calibrate using a set of known object sizes and distances.
by indigo945 4y ago
If you have trouble measuring your pupils distance (which is hard), you can also just calibrate using a set of known object sizes and distances.
- AlexanderDhoore 4y agoThat is exactly what I did. I placed a ruler of 40cm on a closet at eye level. I did the thumb trick and found the exact distance I had to stand so my thumb jumped from left to right of the 40cm ruler. Then I measure the distance I was standing from the ruler. distance / 40cm = your body ratio. So there is no reason to measure length of arm or distance between eyes. We are only interested in their ratio here. You basically run the "thumb trick" in reverse. From the distance and object size => you get the ratio.
- credit_guy 4y agoThis is awesome. It's a cool way to teach your kids both math and science. Math because of the triangle similarity proof of the "recipe", and science because of the method of calibration. Thank you.