SCALABLE IMAGE ENCODING DEVICE AND SCALABLE IMAGE DECODING DEVICE

摘要

The present invention provides a scalable image encoding device and scalable image decoding device. A scalable-image encoding device comprises: a first encoding unit whereby an original image at a first level of resolution is encoded at a second level of resolution and a base-layer bitstream is produced which is for the production of a reconstructed image at the second level of resolution; and a second encoding unit whereby a reconstituted image at the second level of resolution, which is provided from the first encoding unit, is reconstituted as a reconstructed image at the first level of resolution in response to an interpolation mode signal, and whereby the original image at the first level of resolution is encoded through the use of the reconstructed image at the first level of resolution and an upper-layer bitstream is produced which comprises additional information for producing a reconstructed image at the first level of resolution or a third level of resolution.