GB2508538A - Fisheye video correction - Google Patents

Fisheye video correction Download PDF

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Publication number
GB2508538A
GB2508538A GB1402970.6A GB201402970A GB2508538A GB 2508538 A GB2508538 A GB 2508538A GB 201402970 A GB201402970 A GB 201402970A GB 2508538 A GB2508538 A GB 2508538A
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United Kingdom
Prior art keywords
frame
transformation
image transformation
minimising
frames
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1402970.6A
Other versions
GB2508538B (en
GB201402970D0 (en
Inventor
Chenfeng Li
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swansea University
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Swansea University
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Publication date
Application filed by Swansea University filed Critical Swansea University
Publication of GB201402970D0 publication Critical patent/GB201402970D0/en
Publication of GB2508538A publication Critical patent/GB2508538A/en
Application granted granted Critical
Publication of GB2508538B publication Critical patent/GB2508538B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/04—Context-preserving transformations, e.g. by using an importance map
    • G06T3/047—Fisheye or wide-angle transformations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/80—Geometric correction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
    • G06T7/33—Determination of transform parameters for the alignment of images, i.e. image registration using feature-based methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Processing (AREA)
  • Television Systems (AREA)

Abstract

A method of transforming a stream of wide-angle video frames, the method comprising mapping each video frame onto a spherical mesh selecting one or more features present in a number of the video frames for each frame, generating a energy equation for each of a plurality of image transformation criteria and minimising the energy equations to define an image transformation and applying the image transformation to the spherical mesh for said frame, wherein one of the transformation criteria comprises a measure of temporal coherency between successive frames, whereby the minimisation of each energy equation for each frame includes minimising the change in transformation applied to the selected features between successive frames.
GB1402970.6A 2011-08-11 2012-08-03 Fisheye video correction Expired - Fee Related GB2508538B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1113824.5A GB201113824D0 (en) 2011-08-11 2011-08-11 Fish eye video correction
PCT/GB2012/000632 WO2013021150A1 (en) 2011-08-11 2012-08-03 Fisheye video correction

Publications (3)

Publication Number Publication Date
GB201402970D0 GB201402970D0 (en) 2014-04-09
GB2508538A true GB2508538A (en) 2014-06-04
GB2508538B GB2508538B (en) 2015-09-30

Family

ID=44764338

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1113824.5A Ceased GB201113824D0 (en) 2011-08-11 2011-08-11 Fish eye video correction
GB1402970.6A Expired - Fee Related GB2508538B (en) 2011-08-11 2012-08-03 Fisheye video correction

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1113824.5A Ceased GB201113824D0 (en) 2011-08-11 2011-08-11 Fish eye video correction

Country Status (2)

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GB (2) GB201113824D0 (en)
WO (1) WO2013021150A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3051495B1 (en) * 2015-01-29 2018-09-19 Wipro Limited Systems and methods for mapping object coordinates from a video frame view to real world coordinates
US9792664B2 (en) 2015-01-29 2017-10-17 Wipro Limited System and method for mapping object coordinates from a video to real world coordinates using perspective transformation
US10002406B2 (en) 2016-10-03 2018-06-19 Samsung Electronics Co., Ltd. Consistent spherical photo and video orientation correction
CN117011179A (en) * 2023-08-09 2023-11-07 北京精英路通科技有限公司 Image conversion method and device, electronic equipment and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008114264A2 (en) * 2007-03-21 2008-09-25 Mantis Vision Ltd A method and apparatus for video image stabilization
US20100033551A1 (en) * 2008-08-08 2010-02-11 Adobe Systems Incorporated Content-Aware Wide-Angle Images
US20110091131A1 (en) * 2009-10-19 2011-04-21 Ut-Battelle, Llc System and method for stabilization of fisheye video imagery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008114264A2 (en) * 2007-03-21 2008-09-25 Mantis Vision Ltd A method and apparatus for video image stabilization
US20100033551A1 (en) * 2008-08-08 2010-02-11 Adobe Systems Incorporated Content-Aware Wide-Angle Images
US20110091131A1 (en) * 2009-10-19 2011-04-21 Ut-Battelle, Llc System and method for stabilization of fisheye video imagery

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Leonardo Sacht ET AL: "Scalable Motion-Aware Panoramic Videos", 11 September 2011 (2011-09-11), XP055047313. Retrieved from the Internet: URL: http://w3.impa.br/~leo-ks/publications/tech_report_panvid_2011.pdf [retrieved on 2012-12-10] *
ROBERT CARROLL ET AL: "Optimizing content-preserving projections for wide-angle images", ACM TRANSACTIONS ON GRAPHICS, vol. 28, no. 3, 27 July 2009 (2009-07-27), page 1, XP055046775, ISSN: 0730-0301, DOI: 10.1145/1531326.1531349. *

Also Published As

Publication number Publication date
GB2508538B (en) 2015-09-30
WO2013021150A1 (en) 2013-02-14
GB201113824D0 (en) 2011-09-28
GB201402970D0 (en) 2014-04-09

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190803