Volume Rendering Flashcards
What is volume rendering?
Volume rendering is a technique used to visualize and create images of 3D objects or data sets.
How does volume rendering work?
Volume rendering works by casting rays through the volume of voxels calculating that light that is being absorbed, scattered or emitted by each voxel, and using this information to create a 2D image of the volume and a given part.
What is maximum Intensity Projection?
For all the volume samples along a ray, we find the maximum intensity value sampled. Normalise the value to give a pixel value between 1 and 0.
What is ray casting?
Trace the ray through the volume of voxels and composite the samples together to arrive at the final pixel colour
Why is back to front composition inefficient?
If there many objects behind a fully opaque white object, they will have no impact on the colour of the pixel and waste computation power.
