US Patent Issued to LG Electronics on March 25 for "Transform-based image coding method and device" (South Korean Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,262,015, issued on March 25, was assigned to LG Electronics Inc. (Seoul, South Korea).

"Transform-based image coding method and device" was invented by Moonmo Koo (Seoul, South Korea), Jaehyun Lim (Seoul, South Korea) and Seunghwan Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An image decoding method includes a step of deriving a residual sample, wherein the step of deriving the residual sample includes the steps of: when a current block is divided into sub-partition blocks, deriving a transform kernel for an inverse primary transform applied to a sub-partition block based on a horizontal or a vertical length of the sub-partit...