Results 81 to 90 of about 1,285 (216)
[[alternative]]Using Hybrid Coders with SPIHT for Volumetric Medical Images
, 2013 [[abstract]]隨著科技的進步及發展，醫療影像數位化技術在醫療領域有相當程度的革新與發展，由於數位醫學造影設備越來越普遍，數位醫學影像也隨之急劇增加，使得所需的儲存空間呈爆炸性的成長，除了大幅增加PACS (picture archiving and communication system)系統的負擔之外，也大大的增加儲存設備的成本，因此醫學影像壓縮的工作就顯得格外重要。壓縮的原理是去除影像中的冗餘性來減少資料容量，以有效降低影像所佔之容量，因此，若能根據被壓縮資料本身的特性來修改壓縮流程 ...
何重毅, He, Chung-Yi
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Compressive Data Hiding: An Unconventional Approach for Improved Color Image Coding
EURASIP Journal on Advances in Signal Processing, 2002 Traditionally, data hiding and compression have had contradictory goals. The former problem adds perceptually irrelevant information in order to embed data, while the latter removes this irrelevancy and redundancy to reduce storage requirements. In this
Kundur Deepa +3 more
doaj +1 more source
Arithmetic Compression on SPIHT Encoded Images
, 2002 Set Partitioning in Hierarchical Trees (SPIHT) is a wavelet based compression algorithm that offers good compression ratios, a fully progressive bit-stream, and good image quality.
Scott Hauck, Todd Owen
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Joined spectral trees for scalable SPIHT-based multispectral image compression
, 2008 In this paper, the compression of multispectral images is addressed. Such 3-D data are characterized by a high correlation across the spectral components. The efficiency of the state-ofthe- art wavelet-based coder 3-D SPIHT is considered.
Kurugollu, Fatih +2 more
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IEEE AccessTo identify the compressed power grid fault data quickly and effectively, this paper presents a spatiotemporal location fault diagnosis method for the data compressed with set partitioning in hierarchical trees (SPIHT) algorithm.
Tao Liu +6 more
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Robust Image Embedded Watermarking Using DCT and Listless SPIHT
Future Internet, 2017 This paper presents a DCT-based (DCT: discrete cosine transform) listless set partitioning in hierarchical trees (SPIHT) digital watermarking technique that is robust against several common attacks such as cropping, filtering, sharpening, noise ...
J. L. Divya Shivani, Ranjan K. Senapati
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Low-Memory Packetized SPIHT Image Compression
, 1999 The SPIHT image compression algorithm is modified for application to large images with limited processor memory. The subband decomposition coefficients are partitioned into small tree-preserving spatial blocks which are each independently coded using the
William A. Pearlman +1 more
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MODIFICATION TO SPIHT ALGORITHM USING INCREMENTAL THRESHOLD FOR IMAGE COMPRESSION
, 2020 The Modified SPIHT represents a more efficient implementation of the SPIHT algorithm by using variable thresholds to sort the list of insignificant pixels (LIP) and the list of insignificant sets (LIS).
PAWAR, RASHMI V., JADHAV, A. S.
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MEDICAL IMAGES COMPRESSION BASED ON SPIHT AND BAT INSPIRED ALGORITHMS
Iraqi Journal for Computers and Informatics, 2019 There is a significant necessity to compress the medical images for the purposes of communication and storage. Most currently available compression techniques produce an extremely high compression ratio with a high-quality loss.
Sarah Jasim
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Pendekodean Gabungan SPIHT-LDPC Menggunakan Teknik Diversitas
, 2009 Abstrak - Kami mengusulkan metode transmisi citra menggunakan teknik diversitas pada pengkodean gabungan SPIHT-LDPC. Pada sisi pengirim, citra dikompresi menggunakan algoritma SPIHT. Bit stream yang dihasilkan kemudian diproses menggunakan teknik unequal
zainuddin, m agus
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