2024-03-29T15:27:51Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00013099
2023-01-16T04:00:03Z
320:321:322
An Iterative MPEG Super-Resolution with an Outer Approximation of Framewise Quantization Constraint
HASEGAWA, Hiroshi
ONO, Toshiyuki
YAMADA, Isao
SAKANIWA, Kohichi
open access
Copyright (C) 2005 IEICE
super-resolution
MPEG video
set-theoretic approach
outer approximation
adaptive projected subgradient method
In this paper, we present a novel iterative MPEG super-resolution method based on an embedded constraint version of Adaptive projected subgradient method [Yamada & Ogura 2003]. We propose an efficient operator that approximates convex projection onto a set characterizing framewise quantization, whereas a conventional method can only handle a convex projection defined for each DCT coefficient of a frame. By using the operator, the proposed method generates a sequence that efficiently approaches to a solution of super-resolution problem defined in terms of quantization error of MPEG compression.
Institute of Electronics, Information and Communication Engineers
2005-09-01
eng
journal article
VoR
http://hdl.handle.net/2237/14994
https://nagoya.repo.nii.ac.jp/records/13099
http://www.ieice.org/jpn/trans_online/index.html
0916-8508
IEICE transactions on fundamentals of electronics, communications and computer sciences
E88-A
9
2427
2435
https://nagoya.repo.nii.ac.jp/record/13099/files/457.pdf
application/pdf
908.4 kB
2018-02-20