Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping

Marie Lachaise; Richard Bamler; Fernando Rodriguez Gonzalez

doi:10.1109/IGARSS.2010.5652361

Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping

Marie Lachaise, Richard Bamler, Fernando Rodriguez Gonzalez

Chair of Remote Sensing Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

9 Scopus citations

Abstract

The TanDEM-X Mission has as primary objective to generate a high resolution global Digital Elevation Model. This paper proposes a new method for multibaseline Phase Unwrapping which is the critical point of this generation. We propose to combine both Minimum Cost Flow (MCF) and Maximum a Posteriori (MAP) estimation. The latter is used to solve phase gradient ambiguities. The problem is posed as an energy minimization one and solved using Belief Propagation (BP) which is an iterative process. Nevertheless, although very good results are obtained on loopy graphs, it is not guaranteed to converge. Thus, phase unwrapping of the most accurate interferogram is finally performed with the MCF algorithm and takes as input the unwrapped gradients.

Original language	English
Title of host publication	2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4411-4414
Number of pages	4
ISBN (Print)	9781424495658, 9781424495665
DOIs	https://doi.org/10.1109/IGARSS.2010.5652361
State	Published - 2010
Event	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 - Honolulu, United States Duration: 25 Jul 2010 → 30 Jul 2010

Publication series

Name	International Geoscience and Remote Sensing Symposium (IGARSS)

Conference

Conference	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Country/Territory	United States
City	Honolulu
Period	25/07/10 → 30/07/10

Keywords

Belief Propagation
Minimum Cost Flow
Multibaseline phase unwrapping
TanDEM-X

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10.1109/IGARSS.2010.5652361

Cite this

Lachaise, M., Bamler, R., & Gonzalez, F. R. (2010). Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping. In 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 (pp. 4411-4414). Article 5652361 (International Geoscience and Remote Sensing Symposium (IGARSS)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IGARSS.2010.5652361

Lachaise, Marie ; Bamler, Richard ; Gonzalez, Fernando Rodriguez. / Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping. 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. Institute of Electrical and Electronics Engineers Inc., 2010. pp. 4411-4414 (International Geoscience and Remote Sensing Symposium (IGARSS)).

@inproceedings{3c076b57d6354a51b0d504c46fdeb03e,

title = "Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping",

abstract = "The TanDEM-X Mission has as primary objective to generate a high resolution global Digital Elevation Model. This paper proposes a new method for multibaseline Phase Unwrapping which is the critical point of this generation. We propose to combine both Minimum Cost Flow (MCF) and Maximum a Posteriori (MAP) estimation. The latter is used to solve phase gradient ambiguities. The problem is posed as an energy minimization one and solved using Belief Propagation (BP) which is an iterative process. Nevertheless, although very good results are obtained on loopy graphs, it is not guaranteed to converge. Thus, phase unwrapping of the most accurate interferogram is finally performed with the MCF algorithm and takes as input the unwrapped gradients.",

keywords = "Belief Propagation, Minimum Cost Flow, Multibaseline phase unwrapping, TanDEM-X",

author = "Marie Lachaise and Richard Bamler and Gonzalez, {Fernando Rodriguez}",

year = "2010",

doi = "10.1109/IGARSS.2010.5652361",

language = "English",

isbn = "9781424495658",

series = "International Geoscience and Remote Sensing Symposium (IGARSS)",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "4411--4414",

booktitle = "2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010",

note = "2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 ; Conference date: 25-07-2010 Through 30-07-2010",

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Lachaise, M, Bamler, R & Gonzalez, FR 2010, Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping. in 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010., 5652361, International Geoscience and Remote Sensing Symposium (IGARSS), Institute of Electrical and Electronics Engineers Inc., pp. 4411-4414, 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010, Honolulu, United States, 25/07/10. https://doi.org/10.1109/IGARSS.2010.5652361

Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping. / Lachaise, Marie; Bamler, Richard; Gonzalez, Fernando Rodriguez.
2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. Institute of Electrical and Electronics Engineers Inc., 2010. p. 4411-4414 5652361 (International Geoscience and Remote Sensing Symposium (IGARSS)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Lachaise, Marie

AU - Bamler, Richard

AU - Gonzalez, Fernando Rodriguez

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N2 - The TanDEM-X Mission has as primary objective to generate a high resolution global Digital Elevation Model. This paper proposes a new method for multibaseline Phase Unwrapping which is the critical point of this generation. We propose to combine both Minimum Cost Flow (MCF) and Maximum a Posteriori (MAP) estimation. The latter is used to solve phase gradient ambiguities. The problem is posed as an energy minimization one and solved using Belief Propagation (BP) which is an iterative process. Nevertheless, although very good results are obtained on loopy graphs, it is not guaranteed to converge. Thus, phase unwrapping of the most accurate interferogram is finally performed with the MCF algorithm and takes as input the unwrapped gradients.

AB - The TanDEM-X Mission has as primary objective to generate a high resolution global Digital Elevation Model. This paper proposes a new method for multibaseline Phase Unwrapping which is the critical point of this generation. We propose to combine both Minimum Cost Flow (MCF) and Maximum a Posteriori (MAP) estimation. The latter is used to solve phase gradient ambiguities. The problem is posed as an energy minimization one and solved using Belief Propagation (BP) which is an iterative process. Nevertheless, although very good results are obtained on loopy graphs, it is not guaranteed to converge. Thus, phase unwrapping of the most accurate interferogram is finally performed with the MCF algorithm and takes as input the unwrapped gradients.

KW - Belief Propagation

KW - Minimum Cost Flow

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KW - TanDEM-X

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Lachaise M, Bamler R, Gonzalez FR. Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping. In 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. Institute of Electrical and Electronics Engineers Inc. 2010. p. 4411-4414. 5652361. (International Geoscience and Remote Sensing Symposium (IGARSS)). doi: 10.1109/IGARSS.2010.5652361

Multibaseline gradient ambiguity resolution to support minimum cost flow Phase Unwrapping

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