Camera Calibration for 3D Reconstruction and View Transformation - 3D Modeling and Animation: Synthesis and Analysis Techniques for the Human Body - page 120

Figure 8. An illustration of the possible camera configurations involved in
the multi-step view synthesis process. The direction of each arrow indicates
the orientation of the represented camera.

in a similar manner as the X-interpolation and Y-extrapolation. However, the
dimension of the view would be maintained as the same (Lei & Hendriks, 2002).
The z-position difference to the final view V D is eliminated. It should be noted
that, for different application situations, this Z-transfer step could be simplified
or modified in different ways for better computational performance (Lei &
Hendriks, 2002).

5) De-rectification : The Z-transferred view V Z is rotated and scaled to get

the final view V D .

In Figure 8, an illustration is given of the possible camera configurations involved
in the multi-step view synthesis process.

Results

A view transformation example is shown in Figure 9. Note that the Z-transfer
step is combined together with the de-rectification step. It can be seen that the
reconstructed novel view is comparable with the real view perceived at the
virtual viewpoint. The overall visual quality is good.