Event Extraction Using Transportation of Temporal Optical Flow Fields

2019 ◽  
pp. 692-705
Author(s):  
Itaru Gotoh ◽  
Hiroki Hiraoka ◽  
Atsushi Imiya
Keyword(s):  
Optical Flow ◽  
Flow Fields ◽  
Event Extraction

Monocular Structure from Motion Based on Angular BA

2015 ◽  
Vol 742 ◽  
pp. 290-293
Author(s):  
Xiu Zhi Li ◽  
Ai Lin Yang ◽  
Huan Qiu ◽  
Song Min Jia
Keyword(s):  
Optical Flow ◽  
Structure From Motion ◽  
Structure Refinement ◽  
3D Structure ◽  
Flow Fields ◽  
Image Point ◽  
Pixel Pair ◽  
Pair Matching ◽  
Dense Correspondence

This paper presents a technique for monocular Structure from Motion (SFM) that reconstructs 3D world shape. The technique proposed uses optical flow for 2D pixel pair matching and Angular Bundle Ajustment (ABA) for 3D structure refinement. The proposed strategy has two main advantages. Firstly, optical flow fields provide sufficient dense correspondence of image point pairs and secondly, ABA outperforms classic BA variants, especially for the points relatively far from camera. The reconstruction results obtained in realistic scenario demonstrate the effectiveness and accuracy of the proposed algorithm.

Locating the singular point in first-order optical flow fields.

1998 ◽  
Vol 24 (5) ◽  
pp. 1415-1430 ◽  
Author(s):  
Susan F. te Pas ◽  
Astrid M. L. Kappers ◽  
Jan J. Koenderink
Keyword(s):  
Singular Point ◽  
Optical Flow ◽  
Flow Fields ◽  
First Order
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