The DOI matches its Crossref record.
The LOT: transform coding without blocking effects
Abstract
An exact derivation of an optimal lapped orthogonal transform (LOT) is presented. The optimal LOT is related to the discrete cosine transform (DCT) in such a way that a fast algorithm for a nearly optimal LOT is derived. Compared to the DCT, the fast LOT requires about 20-30% more computations, mostly additions. An image coding example demonstrates the effectiveness of the LOT in reducing blocking effects; the LOT actually leads to slightly smaller signal reconstruction errors than does the DCT.>
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Citations
Cited by
Blind measurement of blocking artifacts in images
Wang, Z., Bovik, A. C., & Evan, B. L. (2002) · Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101) · doi:10.1109/icip.2000.899622 · Cited by 413
Lapped transforms for efficient transform/subband coding
Malvar, H. S. (1990) · IEEE Transactions on Acoustics, Speech, and Signal Processing · doi:10.1109/29.56057 · Cited by 398
Self-citationReview of Postprocessing Techniques for Compression Artifact Removal
Shen, M.-Y., & Kuo, C.-C. J. (1998) · Journal of Visual Communication and Image Representation · doi:10.1006/jvci.1997.0378 · Cited by 175
Metadata
- Authors
- Malvar, H. S., & Staelin, D. H.
- Venue
- IEEE Transactions on Acoustics, Speech, and Signal Processing
- Published
- 1989-04
- Volume
- 37
- Issue
- 4
- Pages
- 553-559
- ISSN
- 0096-3518 (ISSN-L)
- OpenAlex
- W2115002753
- Cited by
- 483
- References
- 0
- FWCI
- 14.73
- Type
- journal article
- Language
- en
- Open access
- closed
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