Title:
適応的スパースフィルタリングを用いた画像のデバンディング
Document Type and Number:
Japanese Patent JP7249417
Kind Code:
B2
Abstract:
Methods and systems for reducing banding artifacts when displaying images are described. Identified image bands are filtered using an adaptive sparse finite response filter, where the tap-distance in the sparse filter is adapted according to an estimated width of each image band. Image debanding may be performed across multiple pixel orientations, such as rows, columns, a 45-degree angle, or a −45-degree angle. Given a threshold to decide whether sparse filtering needs to be performed or not, an iterative debanding process is also proposed.
Inventors:
Gadgill, Nee Raj, Jay.
Sung, Chin
Soo, Gwan-Mean
Sung, Chin
Soo, Gwan-Mean
Application Number:
JP2021535667A
Publication Date:
March 30, 2023
Filing Date:
December 10, 2019
Export Citation:
Assignee:
Dolby Laboratories Licensing Corporation
International Classes:
G06T5/00; H04N19/85
Foreign References:
| US20150092847 |
Attorney, Agent or Firm:
Okuda Seiji
Kita Osamu
Toru Kawakita
Shigeyasu Murase
Kita Osamu
Toru Kawakita
Shigeyasu Murase