First page Back Continue Last page Graphics
Notes:
So, what can we do with multiple calibrated cameras??
We can calibrate the commonly observed volume, apriori.
The Animation shows the same planar grid of points, at ¼ inch resolution, being back-projected into each camera at increasing heights through the volume.
Using the calibration parameters for all four cameras, we construct look up tables.
These look up tables allow the volumetric intersection algorithms to run fast.
there are two ways to organize the look up tables:
voxel to pixel, and pixel to voxel.
The Pixel to voxel lookup table stores for each voxel, the 4 pixel values that the centroid of the voxel projects to in the four cameras
The voxel to Pixel table stores for each pixel in each camera, a list of the voxels which that pixel projects to in the volume