What is the algorithm to create a x-ray image using ray-tracing from a 3-d volume?
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What is the algorithm to create a x-ray image using ray-tracing from a 3-d volume?
Calculate integral(density*dl), where l is ray length, as the ray passes through the volume. The algorithm comes down to, what integration method, how do you interpolate the densities, do you interpolate between rays and if so how, and what is the optimal set of rays to use if you’re using interpolation. And of course, how do you represent the geometry.