The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2022
Filed:
Apr. 22, 2021
Nippon Hoso Kyokai, Tokyo, JP;
Atsuro Ichigaya, Tokyo, JP;
Shunsuke Iwamura, Tokyo, JP;
Shimpei Nemoto, Tokyo, JP;
Kazuhisa Iguchi, Tokyo, JP;
NIPPON HOSO KYOKAI, Tokyo, JP;
Abstract
An encoding deviceincludes: a transformerconfigured to calculate an orthogonal transform coefficient by performing an orthogonal transformation process on a residual image indicating a difference between the input image and a predicted image of the input image; a quantizerconfigured to generate quantization coefficient by quantizing the orthogonal transform coefficient based on a quantization parameter; an entropy encoderconfigured to generate encoded data by encoding the quantization coefficient; an image decoderconfigured to restore an orthogonal transform coefficient from the quantization coefficient based on the quantization parameter and generate a pre-filtering image by adding the predicted image to a residual image restored by performing inverse orthogonal transformation on the orthogonal transform coefficient; and a deblocking filterconfigured to perform a filtering process on the pre-filtering image and control a filtering strength depending on a result of comparison between a luminance signal level of the pre-filtering image and a luminance threshold value.