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:
Oct. 13, 2020
Filed:
Jun. 06, 2017
Oki Electric Industry Co., Ltd., Tokyo, JP;
Satoshi Nakagawa, Tokyo, JP;
OKI ELECTRIC INDUSTRY CO., LTD., Tokyo, JP;
Abstract
To reduce picture quality deterioration and improve coding efficiency when image coding processing and image decoding processing involving deblocking filter processing are performed. The present invention relates to an image transmission system including an image coding apparatus and an image decoding apparatus. The image coding apparatus of the present invention performs coding processing on a target picture in units of blocks and performs filter processing on a picture generated during coding processing by using a filter unit configured to perform filter processing using at least a deblocking filter. Further, the image decoding apparatus of the present invention decodes a target picture in units of blocks and performs filter processing on a picture generated during decoding processing by using a filter unit configured to perform filter processing using at least a deblocking filter. In addition, the deblocking filter determines a type of each block edge of the target picture, selects filter coefficients depending on the type of each block edge of the target picture from filter coefficient sets and applies the selected filter coefficients.