7 ms·

I thought even to get voxels you first have to "solve sudoku"? You have sum of all the voxels "opacity" along rays from many directions and you want to know ea

• marvin 12y ago
  Yes, my comment only treats the process from the point where you have a complete dataset of voxels to the point where you have a finished rendering. ahelwer didn't treat this part of the process in his comment.
• ahelwer 12y ago
  It's much, much simpler than that. You just project a ray from the X-ray point source through the center of a voxel onto the detector, interpolate the X-ray energy detected, and add that energy to the sum in that voxel. Repeat for each voxel and each x-Ray taken (CT scans take a bunch of x-Rays going around in a circle), remove some noise, and boom you've voxelled the data. Fundamentally you're just summing the energy that passes through each point in space. It's trivially parallelizeable.