An algorithm for encoding and decoding the 3-D Hilbert order
Xian Liu, G. Schrack · IEEE Transactions on Image Processing · 1997
Spatial ordering is a transformation relating an n-dimensional voxel to a set of natural numbers. Interest in the Hilbert order (H-order) has been high because of its desirable performance when applied to image processing. In this correspondence, an encoding/decoding algorithm for the three-dimensional (3-D) Hilbert order is presented.