ALEXANDRIA, Va., June 12 -- United States Patent no. 12,301,808, issued on May 13, was assigned to KDDI Corp. (Tokyo).
"Image decoding device, image decoding method, and program" was invented by Kyohei Unno (Saitama, Japan), Kei Kawamura (Saitama, Japan) and Sei Naito (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image decoding device includes a quantization parameter deriving unit configured to correct a value of a decoded quantization parameter of a target block depending on whether or not adaptive color transform has been applied to the target block, and then set, as the quantization parameter of the target block, the larger of the corrected value of the quantization parameter and a pr...