𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The relation of low frequency restoration methods to the gerchberg-papoulis algorithm

✍ Scribed by Hong Yan; Jintong Mao


Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
342 KB
Volume
16
Category
Article
ISSN
0740-3194

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

In magnetic resonance imaging, low frequency components can be allowed to saturate the analog to digital converter to reduce the quantization noise. These components can be estimated using least squares error estimation based low frequency restoration methods or the iterative Gerchberg‐Papoulis algorithm. In this paper, we show the relationship between the closed form estimation methods and the iterative algorithm, propose a method for improving the speed of iteration, and discuss the advantages and disadvantages of two types Of methods. Β© 1990 Academic Press, Inc.


πŸ“œ SIMILAR VOLUMES


On the relation of the cell discretizati
✍ Coffey, Mark W. πŸ“‚ Article πŸ“… 1992 πŸ› Wiley (John Wiley & Sons) 🌐 English βš– 468 KB

We point out the connection between the cell discretization algorithm and the primal hybrid finite-element method. There is a very close relationship between these two non-conforming methods. In particular, an important result between Lagrange multipliers and normal derivatives obtains in both cases

The dose-related response of rabbit fast
✍ Hazel Sutherland; Jonathan C. Jarvis; Martin M. N. Kwende; Stephen J. Gilroy; St πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 865 KB

Rabbit tibialis anterior muscles were stimulated continuously at 2.5 Hz, 5 Hz, or 10 Hz for 10 months. The resulting adaptive transformation was dose-related for contractile speed, myosin isoform composition, and enzyme activities. The ''fast-oxidative'' state produced by stimulation at 2.5 Hz was s

Using the Q-connectivity method to study
✍ Laura D. Hanish; HΓ©lΓ¨ne Barcelo; Carol Lynn Martin; Richard A. Fabes; Jennifer H πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 English βš– 261 KB

A new social network method shows that young children vary in their abilities to interact with multiple peer groups and to maintain group interactions over time. Learning how to competently sustain group interactions is an important developmental task for preschoolers and is associated with enhanced