Multiplierless PR quadrature mirror filters for subband image coding
1Dept. of Electr. and Comput. Eng., New Jersey Inst. of Technol., Newark, NJ.
Summary
Multiplierless perfect reconstruction quadrature mirror filters (PR-QMFs) offer efficient VLSI implementation and perform comparably or better than existing filter banks and DCT-based image coding methods.
Area of Science:
- Digital Signal Processing
- Image and Video Coding
- Filter Bank Design
Background:
- Suboptimal multiplierless perfect reconstruction quadrature mirror filter (PR-QMF) solutions are explored.
- Existing filter banks and discrete-cosine-transform-based (DCT-based) image coding techniques serve as benchmarks.
Purpose of the Study:
- To evaluate the performance of multiplierless PR-QMFs.
- To compare their efficiency against established image coding methods.
- To identify potential applications in real-time systems.
Main Methods:
- Analysis of multiplierless PR-QMF solutions.
- Objective and subjective performance evaluations.
- Implementation efficiency assessment for Very Large Scale Integration (VLSI) systems.
Main Results:
- Multiplierless PR-QMFs demonstrate performance comparable to or exceeding known filter banks.
- They outperform DCT-based image coding techniques objectively and subjectively.
- High implementation efficiency on VLSI systems is confirmed.
Conclusions:
- Multiplierless PR-QMFs present a viable and efficient alternative for image and video coding.
- Their performance and efficiency make them suitable for real-time applications.
- Further applications in signal processing are anticipated.
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