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Parallel Bundle Adjustment of High Resolution Satellite Imagery.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Parallel Bundle Adjustment of High Resolution Satellite Imagery./
Author:	Balasalle, James.
Description:	1 online resource (96 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Contained By:	Dissertation Abstracts International79-10B(E).
Subject:	Computer science. -
Online resource:	click for full text (PQDT)
ISBN:	9780355966145

Parallel Bundle Adjustment of High Resolution Satellite Imagery.
Balasalle, James.

Parallel Bundle Adjustment of High Resolution Satellite Imagery. - 1 online resource (96 pages)

Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.

Thesis (Ph.D.)--University of Colorado at Boulder, 2018.

Includes bibliographical references

Bundle adjustment is the process of minimizing errors in camera and three-dimensional structure parameters. The bundle adjustment process is applicable to many areas of geospatial awareness, computer vision, robotics, and imaging, both terrestrial imaging and remote sensing. In the case of remote sensing and planetary imaging, current methods do not adequately address geographic areas consisting of both a large number of images and image observations. Other application domains focus on a single portion of the bundle adjustment process, the solution of a linear system, but ignore the computation of the coefficient matrix. In this thesis we propose a fully parallel approach to the bundle adjustment problem. This approach includes parallel computation of the required partial derivatives, which also addresses load-imbalance inherent in the problem, a parallel solution to the required linear system, and novel parallel preconditioning techniques for this system. Additionally we investigate the use of a relational database to enable fast recomputation due to image addition or removal.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355966145Subjects--Topical Terms:

573171
Computer science.
Index Terms--Genre/Form:

554714
Electronic books.

Parallel Bundle Adjustment of High Resolution Satellite Imagery.
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300 $a 1 online resource (96 pages)
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500 $a Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
500 $a Adviser: Xiao-Chuan Cai.
502 $a Thesis (Ph.D.)--University of Colorado at Boulder, 2018.
504 $a Includes bibliographical references
520 $a Bundle adjustment is the process of minimizing errors in camera and three-dimensional structure parameters. The bundle adjustment process is applicable to many areas of geospatial awareness, computer vision, robotics, and imaging, both terrestrial imaging and remote sensing. In the case of remote sensing and planetary imaging, current methods do not adequately address geographic areas consisting of both a large number of images and image observations. Other application domains focus on a single portion of the bundle adjustment process, the solution of a linear system, but ignore the computation of the coefficient matrix. In this thesis we propose a fully parallel approach to the bundle adjustment problem. This approach includes parallel computation of the required partial derivatives, which also addresses load-imbalance inherent in the problem, a parallel solution to the required linear system, and novel parallel preconditioning techniques for this system. Additionally we investigate the use of a relational database to enable fast recomputation due to image addition or removal.
520 $a As other research has shown, preconditioning the linear system present in the bundle adjustment problem is critical. We present two novel, parallel preconditioners, also based on the geographic information of the input data. These preconditioners are specific to the planetary imaging application domain and address the specific matrix structure that arises in this area.
520 $a We show that the parallel derivative methods achieve a high level of parallel efficiency and work well with the usage of a parallel, distributed memory, linear solver. The demonstrated preconditioners make a tangible reduction in the number of required solver iterations. Lastly, because these problems are solved many times for various applications, we present a database-backed method which stores derivative information, thereby easily allowing for projects to be re-run quickly, or modified slightly without a large recomputation cost. All of these elements result in a completely parallel bundle adjustment system capable of processing large geographic areas with millions of image observations.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Computer science. $3 573171
650 4 $a Applied mathematics. $3 1069907
650 4 $a Remote sensing. $3 557272
655 7 $a Electronic books. $2 local $3 554714
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690 $a 0364
690 $a 0799
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Colorado at Boulder. $b Computer Science. $3 1180184
773 0 $t Dissertation Abstracts International $g 79-10B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10792461 $z click for full text (PQDT)