Results 21 to 30 of about 52,311 (259)
QUASII: QUery-Aware Spatial Incremental Index. [PDF]
, 2018 With large-scale simulations of increasingly detailed models and improvement of data acquisition technologies, massive amounts of data are easily and quickly created and collected.
Ailamaki, A +3 more
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Video Coding Using 3D Dual-Tree Wavelet Transform
EURASIP Journal on Image and Video Processing, 2007 This work investigates the use of the 3D dual-tree discrete wavelet transform (DDWT) for video coding. The 3D DDWT is an attractive video representation because it isolates image patterns with different spatial orientations and motion directions and ...
Vetro Anthony +3 more
doaj +2 more sources
Hierarchical octree and k-d tree grids for 3D radiative transfer simulations [PDF]
, 2013 A crucial ingredient for numerically solving the 3D radiative transfer problem is the choice of the grid that discretizes the transfer medium. Many modern radiative transfer codes, whether using Monte Carlo or ray tracing techniques, are equipped with ...
Baes, M., Camps, P., Saftly, W.
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PERFORMANCE ANALYSIS OF SET PARTITIONING IN HIERARCHICAL TREES (SPIHT) ALGORITHM FOR A FAMILY OF WAVELETS USED IN COLOR IMAGE COMPRESSION [PDF]
ICTACT Journal on Image and Video Processing, 2014 With the spurt in the amount of data (Image, video, audio, speech, & text) available on the net, there is a huge demand for memory & bandwidth savings. One has to achieve this, by maintaining the quality & fidelity of the data acceptable to the end user.
A. Sreenivasa Murthy +2 more
doaj
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
doaj +1 more source
The Journal of Engineering, 2022 Orthogonal frequency division multiple access (OFDMA) has been attracting much attention in the recent generation of wireless communications to meet the required demands arising from the explosive growth of Internet, multimedia and broadband services ...
Nagi H. Al‐Ashwal +3 more
doaj +1 more source
Introduced birds in urban remnant vegetation : does remnant size really matter? [PDF]
, 2006 Introduced birds are a pervasive and dominant element of urban ecosystems. We examined the richness and relative abundance of introduced bird species in small (1–5 ha) medium (6–15 ha) and large (>15 ha) remnants of native vegetation ...
Anderson D. R. +16 more
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Every property is testable on a natural class of scale-free multigraphs [PDF]
, 2015 In this paper, we introduce a natural class of multigraphs called hierarchical-scale-free (HSF) multigraphs, and consider constant-time testability on the class.
Ito, Hiro
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Enhanced SPIHT Algorithm with Pipelined Datapath Architecture Design
Electrica, 2019 Set partitioning in hierarchical trees(SPIHT) is an efficient algorithm which is used for the image compressionwidely. SPIHT operates sequentially so, its parallel implementation isdifficult.
Serap Cekli, Ali Akman
doaj +1 more source
Three-Dimensional SPIHT Coding of Volume Images with Random Access and Resolution Scalability
EURASIP Journal on Image and Video Processing, 2008 End users of large volume image datasets are often interested only in certain features that can be identified as quickly as possible. For hyperspectral data, these features could reside only in certain ranges of spectral bands and certain spatial areas ...
William A. Pearlman, Emmanuel Christophe
doaj +2 more sources