METHOD AND APPARATUS FOR VIDEO ENCODING WITH SHARING SAO PARAMETERS BETWEEN COLOR COMPONENTS, METHOD AND APPARATUS FOR VIDEO DECODING WITH SHARING SAO PARAMETERS BETWEEN COLOR COMPONENTS

摘要

The present invention suggests a method and a device for encoding and decoding a video for generating a restored image in which an error with an original image is minimized. The method for decoding a video of the present invention comprises the steps of: acquiring a slice sample adaptive offset (SAO) parameter for a current slice from a slice header of the received bit stream; acquiring the luma SAO use information for a luma component and the chroma SAO use information for chroma components of the current slice in the slice SAO parameter; determining whether to perform a SAO adjustment for the luma component of the current slice based on the luma SAO use information; and identically determining whether to perform the SAO adjustment for a first chroma component and a second chroma component of the current slice based on the chroma SAO use information. [Reference numerals] (22) SAO parameter obtaining unit;(24) SAO determining unit;(26) SAO adjusting unit