ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,231,687, issued on Feb. 18, was assigned to InterDigital CE Patent Holdings SAS (Paris).
"Karhunen loeve transform for video coding" was invented by Karam Naser (Cesson-Sevigne, France), Fabrice Le Leannec (Betton, France), Franck Galpin (Cesson-Sevigne, France) and Thierry Dumas (Cesson-Sevigne, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "In one implementation, KLT transform matrices are derived during the encoding or decoding process. In particular, the KLT transform matrices can be derived for either the primary transforming stage or the secondary transforming stage, or both. Because the KLT transform matrices can be derived at both the enc...