Margaret A. Lepley

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Quantization is instrumental in enabling the rich feature set of JPEG 2000. Several quantization options are provided within JPEG 2000. Part I of the standard includes only uniform scalar dead-zone quantization, while Part II allows both generalized uniform scalar dead-zone quantization and trellis coded quantization (TCQ). In this paper, an overview of(More)
This report explores the degree of compatibility between the wavelet-based WSQ fingerprint compression standard and JPEG 2000 compression standard, with a view towards identifying coexistence or potential migration paths. Theoretical comparison of the two standards led to the introduction of three new elements into JPEG 2000. A prototype WSQ-to-JPEG 2000(More)
In this paper, we present an evaluation of various wavelet filters in the context of an energy efficient integer wavelet transform on SPARTAN 3E FPGA. The usage of different wavelet filters (Daubechies-9/7, Daubechies-5/3, Haar, etc.) for differential frames is investigated, where we mainly focus on computation time and average image quality of the video(More)
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