Sphere-packings, lattices, and groups
Sphere-packings, lattices, and groups
Geometric warping watermarking extended concerning geometric attacks and embedding artifacts
Proceedings of the 9th workshop on Multimedia & security
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The densest lattice packings of ellipsoids in Euclidian d-space Ed are known for d ≤ 8. We construct dense non-lattice packings for 4 ≤ d ≤ 8 that exceed the densities of the densest lattice packings by surprisingly large factors, in particular in E8 by more than 42.9%.