Name
Title | ||
|---|---|---|
Spatial Error Concealment Algorithm Using Novel Block Classification With A Variable Operating Region |
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. |
Year | Venue | Keywords |
|---|---|---|
2003 | IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | error concealment, block classification, VOR, LI, BMDI, CLIBM |
DocType | Volume | Issue |
Journal | E86A | 6 |
ISSN | Citations | PageRank |
0916-8508 | 0 | 0.34 |
References | Authors | |
0 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Byung-Ju Kim | 1 | 0 | 0.34 |
| Kee-Koo Kwon | 2 | 0 | 0.34 |
| Suk-Hwan Lee | 3 | 0 | 0.34 |
| Seong-Geun Kwon | 4 | 0 | 0.34 |
| Kuhn-Il Lee | 5 | 0 | 0.34 |