Arbitrary scaling of images using an M-channel DFT filter bank with optimized adaptive interpolation kernelsopen access
- Authors
- Kim, Jinyoung; Nam, Sang Won
- Issue Date
- Nov-2007
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
- Keywords
- arbitrary scalability; M-ch DFT filter bank; compactly supported sampling function (CSSF); optimized adaptive interpolation
- Citation
- IEICE ELECTRONICS EXPRESS, v.4, no.21, pp.665 - 671
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEICE ELECTRONICS EXPRESS
- Volume
- 4
- Number
- 21
- Start Page
- 665
- End Page
- 671
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179402
- DOI
- 10.1587/elex.4.665
- ISSN
- 1349-2543
- Abstract
- A new approach to arbitrary scaling of high quality images is proposed, whereby a 2-D M-channel DFT filter bank is designed along with its synthesis part being modified on the basis of a compactly supported sampling function. For that purpose, the 2-D down/upsampling formulae in a closed form are derived and utilized. Also, an optimized adaptive interpolation technique is employed to compensate for quality degradation arising in scaled images. Finally, simulation results demonstrate that high quality images of arbitrary size can be obtained from the original image.
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