METHOD FOR ENCODING INTER-LAYER VIDEO FOR COMPENSATING LUMINANCE DIFFERENCE AND DEVICE THEREFOR, AND METHOD FOR DECODING VIDEO AND DEVICE THEREFOR

摘要

Provided are a method for encoding an inter-layer video for performing luminance compensation according to each image characteristic of blocks of other layer images and a device therefor, and a method for decoding an inter-layer video and a device therefor. The provided method for decoding an inter-layer video comprises: restoring first layer images on the basis of encoding information obtained from a first layer bitstream; determining whether to carry out luminance compensation for a second layer restoration block which is determined by using a first layer reference block corresponding to a second layer block among the restored first layer images, so as to restore the second layer block determined by a prediction mode and a predetermined partition type; generating the second layer restoration block by using the first layer reference block and inter-layer prediction information obtained from a second layer bitstream; and generating a second layer image which includes the second layer restoration block of which the luminance is determined depending on whether to perform the luminance compensation.