© Field of View 2018 GeoSnap Pro User Manual
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As an example
on how to determine the values in the transformation matrix, let’s look at
the default configuration of the VN-200 mounted on the GeoSnap hotshoe module on a
DSLR.
As can be seen above, the X axis of the camera contains all of the negative Z axis of the VN-
200 and nothing else, the Y axis of the camera contains all of the positive Y axis of the VN-
200 and nothing else, and the Z axis of the camera contains all of the positive X axis of the
VN-200 and nothing else. Putting this into equation form gives:
𝑋
𝐶
= −𝑍
𝐵
𝑌
𝐶
= 𝑌
𝐵
𝑍
𝐶
= 𝑋
𝐵
Which gives the following linear equations:
𝑋
𝐶
= 0 ∙ 𝑋
𝐵
+ 0 ∙ 𝑌
𝐵
+ (−1) ∙ 𝑍
𝐵
𝑌
𝐶
= 0 ∙ 𝑋
𝐵
+ 1 ∙ 𝑌
𝐵
+ 0 ∙ 𝑍
𝐵
𝑍
𝐶
= 1 ∙ 𝑋
𝐵
+ 0 ∙ 𝑌
𝐵
+ 0 ∙ 𝑍
𝐵
This goes into the matrix equation as:
{
𝑋
𝑌
𝑍
}
𝐶
= [
0
0
−1
0
1
0
1
0
0
] ∙ {
𝑋
𝑌
𝑍
}
𝐵
Which gives our default string of: 0,0,-1,0,1,0,1,0,0.
X
C
Y
C
Z
C
X
B
Y
B
Z
B
Summary of Contents for GeoSnap Pro
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