Results 151 to 160 of about 8,657,233 (184)
Some of the next articles are maybe not open access.
Four-Dimensional Wavelet Compression of 4-D Medical Images Using Scalable 4-D SBHP
2007 Data Compression Conference (DCC'07), 2007This paper proposes a low-complexity wavelet-based method for progressive lossy-to-lossless compression of four dimensional (4-D) medical images. The subband block hierarchal partitioning (SBHP) algorithm is modified and extended to four dimensions, and applied to every code block independently.
Ying Liu, William A. Pearlman
openaire +1 more source
Autonomous 4-D hyperchaotic oscillator and synchronization
2009 16th International Conference on Digital Signal Processing, 2009An autonomous hyperchaotic oscillator, which is suitable for synchronization and application in secure communications, is studied. It is based on an LC oscillator and a single amplifier biquad (SAB), coupled by means of a diode. The inductor of the resonant circuit is realized in practice by using the Antoniou gyrator circuit.
Konstantine Giannakopoulos +1 more
openaire +1 more source
4-D ultrafast shear-wave imaging
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2015Over the last ten years, shear wave elastography (SWE) has seen considerable development and is now routinely used in clinics to provide mechanical characterization of tissues to improve diagnosis. The most advanced technique relies on the use of an ultrafast scanner to generate and image shear waves in real time in a 2-D plane at several thousands of ...
Jean-luc Gennisson +6 more
openaire +2 more sources
VLSI architecture for 4-D depth filtering
Signal, Image and Video Processing, 2013We propose the application of light field cameras and depth-selective 4-D IIR filtering to enable video surveillance, leveraging the post-capture depth-selective filtering enabled by computational photography. Novel ultralow-complexity differential-form depth-selective 4-D IIR filter algorithms and their corresponding architectures are proposed for ...
Arjuna Madanayake +4 more
openaire +1 more source
Vessels as 4-D Curves: Global Minimal 4-D Paths to Extract 3-D Tubular Surfaces and Centerlines
IEEE Transactions on Medical Imaging, 2007In this paper, we propose an innovative approach to the segmentation of tubular structures. This approach combines all of the benefits of minimal path techniques such as global minimizers, fast computation, and powerful incorporation of user input, while also having the capability to represent and detect vessel surfaces directly which so far has been a
Li, Hua, Yezzi, Anthony
openaire +3 more sources
Invariants of flows in 4-d space time
Physics Letters AzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Susan Mathew Panakkal +2 more
openaire +2 more sources