ALEXANDRIA, Va., July 30 -- United States Patent no. 12,375,718, issued on July 29, was assigned to Sharp K.K. (Sakai, Japan).
"Image decoding apparatus" was invented by Tomohiro Ikai (Sakai, Japan) and Tomonori Hashimoto (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is a problem in that implicit MTS performance is lost in a case that the implict MTS is combined with secondary transform. The present invention provides an image decoding apparatus that can more preferably apply transform by MTS and secondary transform. A video decoding apparatus includes: a second transformer configured to apply transform using a transform matrix to the transform coefficient to modify the transform coeffic...