DocumentCode :
834953
Title :
On lapped orthogonal transforms [signal coding applications]
Author :
Akansu, Ali N. ; Wadas, Frank E.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Volume :
40
Issue :
2
fYear :
1992
fDate :
2/1/1992 12:00:00 AM
Firstpage :
439
Lastpage :
443
Abstract :
The energy compaction performance of several lapped orthogonal transforms (LOTs) are presented. It is shown that the LOT outperforms the conventional block transforms for all the cases considered. The performance of the poorly performing block transforms for high correlation sources increased dramatically in their LOT versions. It is found that the energy compaction performance of the LOT versions of the different block transforms considered is about the same. Therefore, the choice of LOT is based on the efficiency of the transform algorithm. The LOT is an alternative to the block transforms for signal coding applications. Also, the blocking effect is reduced with the increase in the computational complexity of the transform algorithm
Keywords :
encoding; signal processing; transforms; block transforms; computational complexity; energy compaction performance; high correlation sources; lapped orthogonal transforms; signal coding applications; Bit rate; Compaction; Computational complexity; Discrete cosine transforms; Discrete transforms; Image coding; Performance gain; Phase change materials; Testing; Vehicles;
fLanguage :
English
Journal_Title :
Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1053-587X
Type :
jour
DOI :
10.1109/78.124954
Filename :
124954
Link To Document :
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