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Pixel fieldofview
Figure 5.5:

In order to calculate the approximate intersection volume of the voxel in
equation (5.3), the pixel fieldofview must be
calculated.
Once the parameters of the optical transfer
function are determined as outlined in chapter 4, the pixel
fieldofview, , can be determined by standard calculus. With
as the angle relative to the optical axis of the camera, and
as the azimuthal angle, the fieldofview is calculated as:

(5.14) 
for which are the horizontal and vertical image coordinates
and
is the absolute
value of the determinant
of the Jacobian of the optical transfer function, which, for the ALIS
cameras, is given by equations (4.6 and 4.7).
copyright Björn Gustavsson 20001024
