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formula to calculate from real distances to pixels
Hello
We have a real image (a street in the foreground and then stairs in the background, we see it in perspective). In that case we would like to draw a line moving in the z axe climbing the stairs.
The point is that we like to know:
how does the relationship between the pixels and real distances change when moving in the y and z axe? (we’d like to know the formula)
PixelsX=PixelsX(x,y,z)
PixelsY=PixelsY(x,y,z)
PixelsZ=PixelsZ(x,y,z)
That means that the value of pixels to represent the same distance changes with x, y and z. -
2 Replies
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Well, that’s what 3D tracking software is for… Other than that I don’t think you will need any such trickery. It seems your shot would be accomplishable easy enough by matching the elements by hand.
Mylenium
[Pour Myl
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hi
for this shot in general we don’t need the formular, but in general i’m interested in this term, so would be nice to get information/calculation of this.
links?
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