- #1
DaveC426913
Gold Member
- 22,888
- 6,594
A geometry puzzle:
Say I want to obtain an image of an object (eg. a toy car) from every possible angle in 3-dimensions, in, say, 15 degree increments. How many pictures would I need to take?
The immediate answer is 576.
1] Rotate the car around X axis through 360 degrees in 15 degree increments. Take 24 pictures.
2] Now rotate the car around Y axis by 15 degrees.
3] Repeat steps 1 and 2 23 more times.
24x24=576.
But here's the thing, many shots will be duplicates, merely the same angle of the object but with the image rotated.
So, what is the minimum number of pictures I would need to take?
It occurs to me that this might be simpler if I left the object stationary and moved the camera. Then I would sidestep the whole duplicate angle thing...
Say I want to obtain an image of an object (eg. a toy car) from every possible angle in 3-dimensions, in, say, 15 degree increments. How many pictures would I need to take?
The immediate answer is 576.
1] Rotate the car around X axis through 360 degrees in 15 degree increments. Take 24 pictures.
2] Now rotate the car around Y axis by 15 degrees.
3] Repeat steps 1 and 2 23 more times.
24x24=576.
But here's the thing, many shots will be duplicates, merely the same angle of the object but with the image rotated.
So, what is the minimum number of pictures I would need to take?
It occurs to me that this might be simpler if I left the object stationary and moved the camera. Then I would sidestep the whole duplicate angle thing...