Samsung Electronics Co., Ltd.

Yonsei University

Jinseong Jang

Dosik Hwang

Min-su Cheon

Sanghoon Lee

Chan-yul Kim

Sun-il Lee

Young-o Park

Sun-young Jeon

Changhyun Park

Sangyoun Lee

Sewoong Ahn

Taeoh Kim

Kihun Bang

Hanbyol Jang

Taejoon Eo

Jongyoo Kim

An electronic apparatus includes a memory configured to store a predetermined conversion relation, and a processor configured to obtain first luminance information indicating luminance values of respective pixels included in a first image, and obtain first color information indicating color values of the respective pixels, obtain a first cumulative distribution function indicating a relation between a cumulative pixel count and each luminance level based on the first luminance information, obtain a second cumulative distribution function by applying the predetermined conversion relation to the first cumulative distribution function, calculate second luminance information indicating converted luminance values of the respective pixels by using the first cumulative distribution function and the second cumulative distribution function, and generate a second image based on the first color information and the second luminance information.

Electronic apparatus and controlling method of thereof

Provided is an image encoding method including generating a first picture reconstructed by using a residual picture and a predicted picture; generating a second picture by applying a first artifact reduction filter to the first picture; determining a picture having a smaller bit-rate distortion cost from among the first and second pictures by comparing a first bit-rate distortion cost of the first picture with a second bit-rate distortion cost of the second picture; generating a third picture by applying an in-loop filter to the determined picture; generating a fourth picture by applying a second artifact reduction filter to the third picture; determining a picture having smaller distortion from among the third and fourth pictures by comparing first distortion of the third picture with second distortion of the fourth picture; and generating, via a processor, a bitstream including information about whether the second artifact reduction filter is applied.

Image encoding method and apparatus using artifact reduction filter, and image decoding method and apparatus using artifact reduction filter

Growing community of inventors

Seoul, South Korea

Jinseong Jang