Device and method for scalable video encoding considering memory bandwidth and computational quantity and device and method for scalable video decoding

摘要

The present invention relates to scalable video encoding and decoding methods for optimizing a memory bandwidth and computational quantity when performing an inter layer prediction. Proposed is a scalable video encoding method comprising: determining a reference layer image among base layer images to perform an inter layer prediction for enhancement layer images; if an upsampled reference layer image is determined by performing an inter layer interpolation filtering to the reference layer image determining not to perform an inter layer prediction among the enhancement layer images for the enhancement layer images; and encoding residue components between the upsampled reference layer image and the enhancement layer images.