3 ms·
You changed the assertion because you're including time. The parent said "A 2D slice of a 3D object." And that's wrong, it's a 2D projection of a 3D object.
by 77pt77 11y ago
You changed the assertion because you're including time.
The parent said "A 2D slice of a 3D object."
And that's wrong, it's a 2D projection of a 3D object.
If you include time then it's a slice in the time component, right, but that wasn't being discussed.
- wolfgke 11y agoThe third dimension is time. Videos can also be generated without using projections (though cameras use this method).
- logfromblammo 11y agoTime is a different type of dimension than the spatial dimensions. If you're really going to bring time into it, you need to use a dimensional signature, wherein one number represents dimensions that square to a positive number, another represents dimensions that square to a negative number, and another represents dimensions that square to zero. A video is either {2,1,0}-D or {1,2,0}-D, depending on the mathematical sign convention you chose for your spacelike dimensions. When people use a single number, they invariably mean spacelike dimensions, as null dimensions and multiple timelike dimensions tend to give people the screaming jibblies when they try to visualize them.