Abstract:
Provided is a video stream decoding method including: obtaining a first identifier of at least one decoding target layer image from among a plurality of layer images from a bitstream including a plurality of pieces of layer encoding image data; obtaining a second identifier including information expressing a layer identifier outside of an expression range of the first identifier from the bitstream; determining a layer identifier based on the first and second identifiers; and reconstructing an image by decoding the decoding target layer image by using the determined layer identifier.
Abstract:
A video decoding method includes receiving information about whether to correct a chroma sample, obtaining a correction value determined using a luma value in a range corresponding to a position of a determined chroma pixel, based on the received information, and correcting a chroma value using the obtained correction value.
Abstract:
An image decoding method including: determining whether image data of a base layer, which is encoded according to a first codec, is decodable according to a second codec; and decoding the image data of the base layer based on a result of the determining, wherein the image data includes image data of an enhancement layer, which is encoded according to the first codec.