Results 181 to 190 of about 1,568 (215)

Compression of Mammography Image by SPIHT and Fractals

2011
The use of all types of Radio image, Echo, MRI... poses a major problem of storage and of filing as example a hospital of 200 beds produces each year 875 Gb of data and so of such images must be transmitted via a network; the duration of transmission is often too long; as a stage has all these problems; compression becomes an operation imperative and ...
Benterki Soumya, Guemou Bouabdellah
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Vector Quantization in SPIHT Image Codec

2006
The image coding algorithm “Set Partitioning in Hierarchical Trees (SPIHT)” introduced by Said and Pearlman achieved an excellent rate-distortion performance by an efficient ordering of wavelet coefficients into subsets and bit plane quantization of significant coefficients.
Rafi Mohammad, Christopher F. Barnes
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SPIHT implemented in a XC4000 device

The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002., 2003
In this paper we present an efficient FPGA implementation of the 'Set Partitioning in Hierarchical Trees' (SPIHT) algorithm of Said and Pearlman (1996) in combination with an arithmetic coder. The FPGA implementation is applied within a partitioned approach for wavelet-based lossy image compression.
J. Ritter, G. Fey, P. Molitor
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Modified SPIHT wavelet compression for ECG signal

Journal of Medical Engineering & Technology, 2007
This 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., 2003
To 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, Tung-Shou Chen, Wei-Hua Andrew Wang, Shiow-Tyng Yeh   +3 more
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Throughput Efficient Parallel Implementation of SPIHT Algorithm

21st International Conference on VLSI Design (VLSID 2008), 2008
We 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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Pixel-Parallel SPIHT for frame memory compression

2009 IEEE International SOC Conference (SOCC), 2009
This 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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Shadow SPIHT with Discarded Lists

2015 1st International Conference on Next Generation Computing Technologies (NGCT), 2015
Various methods and algorithms have been designed and implemented for the purpose of image compression. These techniques are highly valuable as the present day networking system is widening day by day and there is an emerging requirement to shrink the size of images for their quick and efficient transfer.
Yashika Singh, Brijesh Singh Butola
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Perceptual cryptography on SPIHT compressed images or videos

2004 IEEE International Conference on Multimedia and Expo (ICME) (IEEE Cat. No.04TH8763), 2005
Perceptual cryptography encrypts multimedia data in the compression domain and causes some degradation to the decoded data. If customers are interested in the multimedia data, they can pay for one of higher quality. A perceptual cryptography on SPIHT encoded images or videos is presented.
Shiguo Lian, Jinsheng Sun, Zhiquan Wang
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Embedded color image coding with virtual SPIHT

IEEE International Conference on Acoustics Speech and Signal Processing, 2002
This 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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