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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jain, R. Panda, P.R. |
| Copyright Year | 2007 |
| Description | Author affiliation: IP Dev., CoWare India Pvt. Ltd., Noida (Jain, R.) |
| Abstract | The discrete wavelet transform (DWT) forms the core of the JPEG2000 image compression algorithm. JPEG2000 standard defines an irreversible DWT by a lifting scheme of factorized coefficients using (9, 7) Daubechies coefficients. The paper proposed optimizations on lifting based 1D-DWT data flow graph resulting in a new pipelining scheme, which is more power-efficient than existing approaches. The authors have shown that the constant multipliers defined by JPEG2000 standard, have latency of about 1.6 times the general adder latency. Hence, while finding the critical path, the basic assumption of multiplier latency being much greater than the adder latency does not hold for DWT in JPEG2000. How 75% multiplications can be reduced at the scaling step by this 2D-DWT implementation was also shown. This multiplication reduction not only saves power but also results in area saving by eliminating three multipliers in the hardware |
| Starting Page | 1377 |
| Ending Page | 1380 |
| File Size | 344959 |
| Page Count | 4 |
| File Format | |
| ISBN | 1424409209 |
| DOI | 10.1109/ISCAS.2007.378484 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-05-27 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Very large scale integration Wavelet transforms Discrete wavelet transforms Transform coding Delay Buffer storage Image coding Hardware Computer architecture Registers |
| Content Type | Text |
| Resource Type | Article |
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