Spatial Error Concealment Algorithm Using Novel Block Classification with a Variable Operating Region
Summary :
A novel postprocessing algorithm for concealing spatial block errors in block-based coded images is proposed using block classification with a variable operating region (VOR). In the proposed algorithm, a missing block is classified as flat, edge, or complex based on local information from the surrounding blocks which is extracted using a Sobel operation in a VOR. In this case, the VOR is determined adaptively according to the number of edge directions in the missing block. Using the classification, the flat blocks are then concealed by the linear interpolation (LI) method, the edge blocks are concealed by the boundary multi-directional interpolation (BMDI) method, and the complex blocks are concealed by a combined linear interpolation and boundary matching (CLIBM) method. Experimental results demonstrated that the proposed algorithm improved the PSNR and visual quality of the concealment for both original images and JPEG compressed images, and produced better results than conventional algorithms.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E86-A No.6 pp.1554-1559
- Publication Date
- 2003/06/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- LETTER
- Category
- Image
Authors
Keyword
Latest Issue
Copyrights notice of machine-translated contents
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Cite this
Copy
Byung-Ju KIM, Kee-Koo KWON, Suk-Hwan LEE, Seong-Geun KWON, Kuhn-Il LEE, "Spatial Error Concealment Algorithm Using Novel Block Classification with a Variable Operating Region" in IEICE TRANSACTIONS on Fundamentals,
vol. E86-A, no. 6, pp. 1554-1559, June 2003, doi: .
Abstract: A novel postprocessing algorithm for concealing spatial block errors in block-based coded images is proposed using block classification with a variable operating region (VOR). In the proposed algorithm, a missing block is classified as flat, edge, or complex based on local information from the surrounding blocks which is extracted using a Sobel operation in a VOR. In this case, the VOR is determined adaptively according to the number of edge directions in the missing block. Using the classification, the flat blocks are then concealed by the linear interpolation (LI) method, the edge blocks are concealed by the boundary multi-directional interpolation (BMDI) method, and the complex blocks are concealed by a combined linear interpolation and boundary matching (CLIBM) method. Experimental results demonstrated that the proposed algorithm improved the PSNR and visual quality of the concealment for both original images and JPEG compressed images, and produced better results than conventional algorithms.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e86-a_6_1554/_p
Copy
@ARTICLE{e86-a_6_1554,
author={Byung-Ju KIM, Kee-Koo KWON, Suk-Hwan LEE, Seong-Geun KWON, Kuhn-Il LEE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Spatial Error Concealment Algorithm Using Novel Block Classification with a Variable Operating Region},
year={2003},
volume={E86-A},
number={6},
pages={1554-1559},
abstract={A novel postprocessing algorithm for concealing spatial block errors in block-based coded images is proposed using block classification with a variable operating region (VOR). In the proposed algorithm, a missing block is classified as flat, edge, or complex based on local information from the surrounding blocks which is extracted using a Sobel operation in a VOR. In this case, the VOR is determined adaptively according to the number of edge directions in the missing block. Using the classification, the flat blocks are then concealed by the linear interpolation (LI) method, the edge blocks are concealed by the boundary multi-directional interpolation (BMDI) method, and the complex blocks are concealed by a combined linear interpolation and boundary matching (CLIBM) method. Experimental results demonstrated that the proposed algorithm improved the PSNR and visual quality of the concealment for both original images and JPEG compressed images, and produced better results than conventional algorithms.},
keywords={},
doi={},
ISSN={},
month={June},}
Copy
TY - JOUR
TI - Spatial Error Concealment Algorithm Using Novel Block Classification with a Variable Operating Region
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1554
EP - 1559
AU - Byung-Ju KIM
AU - Kee-Koo KWON
AU - Suk-Hwan LEE
AU - Seong-Geun KWON
AU - Kuhn-Il LEE
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E86-A
IS - 6
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - June 2003
AB - A novel postprocessing algorithm for concealing spatial block errors in block-based coded images is proposed using block classification with a variable operating region (VOR). In the proposed algorithm, a missing block is classified as flat, edge, or complex based on local information from the surrounding blocks which is extracted using a Sobel operation in a VOR. In this case, the VOR is determined adaptively according to the number of edge directions in the missing block. Using the classification, the flat blocks are then concealed by the linear interpolation (LI) method, the edge blocks are concealed by the boundary multi-directional interpolation (BMDI) method, and the complex blocks are concealed by a combined linear interpolation and boundary matching (CLIBM) method. Experimental results demonstrated that the proposed algorithm improved the PSNR and visual quality of the concealment for both original images and JPEG compressed images, and produced better results than conventional algorithms.
ER -
English
