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robcat2075

RAW camera motion import/export format

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A:M has a format for importing/exporting camera data. For what it's worth, it seems to work like this...

 

It is a text file that appears like this

 

30 16
1 1 2 3 0 0 0 0 0 0 3.72529e-009 1 12 -0 100 0 0
2 1 2 3 0 0 0 0 0 -1.11022e-016 3.72529e-009 1 12 8.33262 100 0 0
3 1 2 3 0 0 0 0 0 -1.66533e-016 3.72529e-009 1 12 17.0863 100 0 0
4 1 2 3 0 0 0 0 0 -2.77556e-016 3.72529e-009 1 12 26.1848 100 0 0
5 1 2 3 0 0 0 0 0 -2.22045e-016 3.72529e-009 1 12 35.5286 100 0 0
6 1 2 3 0 0 0 0 0 -2.22045e-016 3.72529e-009 1 12 45 100 0 0
7 1 2 3 0 0 0 0 0 -1.11022e-016 3.72529e-009 1 12 54.4714 100 0 0
8 1 2 3 0 0 0 0 0 0 3.72529e-009 1 12 63.8152 100 0 0
9 1 2 3 0 0 0 0 0 -1.11022e-016 3.72529e-009 1 12 72.9137 100 0 0
10 1 2 3 0 0 0 0 0 1.11022e-016 3.72529e-009 1 12 81.6674 100 0 0
...

 

A Spreadsheet program like OpenOffice can interpret the spaces as separators and create something formatted like this

 

camdata.JPG

First row: number of frames, number of columns

 

The rows after that seem to contain the data columns like this:

 

A- frame number

B- X Translation in cm

C- Y Translation

D- Z Translation

E-I- unknown

J- X Aim

K- Y Aim

L- Z Aim

M- Focal distance in cm

N- Z rotation degrees (rotation on barrel axis)

O- Focal length

P-Q- unknown

 

The "Aim" data seems not to be actual angles but XYZ coordinates in space measured from the camera axis that the camera is pointed at. I imagine with some trigonometry that result could be converted by the spreadsheet into any angle format that some other camera system might need. Likewise, a spreadsheet could reformat this data into any order needed by another porgram.

 

If you have some other app that can understand a text format for camera data, this A:M .RAW format looks like a starting point for that.

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Many years back I wrote a program that took the data for the camera and converted it for use in electric image. I was doing character work in am and rendering over matching backgrounds in ei.

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