Jump to ContentJump to Main Navigation
Advanced Data Assimilation for GeosciencesLecture Notes of the Les Houches School of Physics: Special Issue, June 2012$
Users without a subscription are not able to see the full content.

Éric Blayo, Marc Bocquet, Emmanuel Cosme, and Leticia F. Cugliandolo

Print publication date: 2014

Print ISBN-13: 9780198723844

Published to Oxford Scholarship Online: March 2015

DOI: 10.1093/acprof:oso/9780198723844.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 25 February 2021

Assimilation of images

Assimilation of images

(p.371) 16 Assimilation of images
Advanced Data Assimilation for Geosciences

A. Vidard

O. Titaud

Oxford University Press

This chapter describes processes for direct assimilation of images. Among data available for assimilation, a significant portion can be considered as images or image sequences, i.e. structured and dense-in-space information. In meteorology, such observations are often obtained from spaceborne devices and are therefore expensive to acquire. Moreover, images contain information about system dynamics through the time evolution of a sequence or within the structures that are represented (fronts, filaments, etc.). Therefore, images are a valuable source of information. Historically, they have been assimilated by pseudo-observation, where part of the dynamical information is extracted by image processing techniques and then assimilated as conventional observations. This approach has proven quite effective, but the pre-processing renders error specification cumbersome and leads to loss of information. More recently, research has been carried out to assimilate images directly in the assimilation process; two of these proposed approaches are presented and discussed in this chapter.

Keywords:   image, direct assimilation, system dynamics, time evolution, dynamical information

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .