Results 191 to 200 of about 1,285 (216)
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Modified SPIHT wavelet compression for ECG signal
Journal of Medical Engineering & Technology, 2007This paper presents a modified version of Set Partitioning In Hierarchical Trees (SPIHT) wavelet compression method, which has been developed for ECG signal compression. Two more steps in the existing technique have been added to achieve higher compression ratio (CR) and lower percentage rms difference (PRD).
M, Singh, V, Kumar, S C, Saxena
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A new improvement of SPIHT progressive image transmission
Fifth International Symposium on Multimedia Software Engineering, 2003. Proceedings., 2003To generate optimal transmission quality for images, we present a new technique to improve the progressive image transmission (PIT) of SPIHT. The original approach about the progressive image transmission is that SPIHT regards the bit streams acquired from every truncation as a transmission in every phase; in every truncation, SPIHT not only refine the
Chun-Liang Tung +3 more
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Throughput Efficient Parallel Implementation of SPIHT Algorithm
21st International Conference on VLSI Design (VLSID 2008), 2008We present a throughput efficient FPGA implementation of the 'Set Partitioning in Hierarchical Trees' (SPIHT) algorithm for compression of images. The SPIHT uses inherent redundancy among wavelet coefficients and suited for both gray and color images. The SPIHT algorithm uses dynamic data structures which hinders hardware realization.
Anilkumar V. Nandi, R. M. Banakar
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Embedded color image coding with virtual SPIHT
IEEE International Conference on Acoustics Speech and Signal Processing, 2002This paper proposes an efficient extension of virtual set partitioning in hierarchical trees (VSPIHT) for color image coding. Our new scheme, Color-Virtual-SPIHT (CVSPIHT) generates fully embedded bit stream similar to SPIHT. It combines the zerotrees of three color planes in two steps.
Ekram Khan, Mohammed Ghanbari 0001
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VLSI Implementation of a Modified Efficient SPIHT Encoder
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2006Set Partitioning in Hierarchical Trees (SPIHT) is a highly efficient technique for compressing Discrete Wavelet Transform (DWT) decomposed images. Though its compression efficiency is a little less famous than Embedded Block Coding with Optimized Truncation (EBCOT) adopted by JPEG2000, SPIHT has a straight forward coding procedure and requires no ...
Win-Bin Huang +2 more
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Region of interest coding using partial-SPIHT
2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004In this paper, a region of interest coding using partial-SPIHT (P-SPIHT) is proposed. P-SPIHT evaluates the probability of the significant coefficients (P/sub 1/) in each bit plane. Then it codes each bit plane independently and according to its P/sub 1/.
Ahmed Abu-Hajar, Ravi Sankar
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SPIHT-NC: network-conscious zerotree encoding
Proceedings DCC 2000. Data Compression Conference, 2002Wavelet zerotree encoding has been proven to be an efficient way of compressing still images. Two well-known zerotree encoding algorithms, embedded zerotree encoding (EZW) and set partitioning in hierarchical trees (SPIHT), provide excellent progressive display when images are transmitted over reliable networks.
Sami Iren, Paul D. Amer
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Natural image compression based on modified SPIHT
Fourth Annual ACIS International Conference on Computer and Information Science (ICIS'05), 2005Due to the bandwidth and storage limitations, image must be compressed before transmission. The set partitioning in hierarchical trees (SPIHT) algorithm is an efficient method for lossy and lossless coding of image. This paper presents some modifications on the set partitioning in hierarchical trees (SPIHT) algorithm.
Jae-Ju Song +5 more
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Pixel-Parallel SPIHT for frame memory compression
2009 IEEE International SOC Conference (SOCC), 2009This paper proposes a novel frame memory compression algorithm, called Pixel-Parallel SPIHT (PPS) that processes image data in parallel to increase the encoding throughput. The throughput of a PPS coder is an average of 4.48 bits per cycle which is 48.7 times larger than that of No List SPIHT.
Yongseok Jin, Hyuk-Jae Lee
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VLSI Architecture of Arithmetic Coder Used in SPIHT
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2012A high-throughput memory-efficient arithmetic coder architecture for the set partitioning in hierarchical trees (SPIHT) image compression is proposed based on a simple context model in this paper. The architecture benefits from various optimizations performed at different levels of arithmetic coding from higher algorithm abstraction to lower circuits ...
Kai Liu 0021 +2 more
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