3D zigzag for multislicing, multiband and video processing

We present a 3D zigzag rafter -first in literaturewhich allows us to obtain the exact sequence of spectral components after application of Discrete Cosine Transform 3D (DCT-2D) over a cube. Such cube represents part of a video or eventually a group of images such as multi-slicing (e.g., Magnetic Resonance or Computed Tomography imaging) and multi or hyperspectral imagery (optical satellites). Besides, we present a new version of the traditional 2D zigzag, including the case of rectangular blocks. Finally, all the attached code is done in MATLAB®, and that code serves both blocks of pixels or blocks of blocks. Keywords—Multi-slicing – Video processing – Zigzag sequences.