| Full text | |
| Author(s): |
Campos, Mariana Batista
[1]
;
Garcia Tommaselli, Antonio Maria
[1]
;
Castanheiro, Leticia Ferrari
[1]
;
Oliveira, Raquel Alves
[2]
;
Honkavaara, Eija
[2]
Total Authors: 5
|
| Affiliation: | [1] Sao Paulo State Univ UNESP, Sch Sci & Technol, Cartog Dept, BR-19060900 Sao Paulo - Brazil
[2] Finnish Geospatial Res Inst FGI, Dept Remote Sensing & Photogrammetry, Geodeetinrinne 2, FI-02430 Masala - Finland
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | REMOTE SENSING; v. 11, n. 12 JUN 2 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
Close range photogrammetry (CRP) with large field-of-view images has become widespread in recent years, especially in terrestrial mobile mapping systems (TMMS). However, feature-based matching (FBM) with omnidirectional images (e.g., fisheye) is challenging even for state-of-the-art methods, such as the scale-invariant feature transform (SIFT), because of the strong scale change from image to image. This paper proposes an approach to boost FBM techniques on fisheye images with recursive reduction of the search space based on epipolar geometry. The epipolar restriction is calculated with the equidistant mathematical model and the initial exterior orientation parameters (EOPs) determined with navigation sensors from TMMS. The proposed method was assessed with data sets acquired by a low-cost TMMS. The TMMS is composed of a calibrated poly-dioptric system (Ricoh Theta S) and navigation sensors aimed at outdoor applications. The assessments show that Ricoh Theta S position and attitude were estimated in a global bundle adjustment with a precision (standard deviation) of 4 cm and 0.3 degrees, respectively, using as observations the detected matches from the proposed method. Compared with other methods based on SIFT extended to the omnidirectional geometry, our approach achieved compatible results for outdoor applications. (AU) | |
| FAPESP's process: | 13/50426-4 - Unmanned airborne vehicle-based 4D remote sensing for mapping Rain Forest biodiversity and its change in Brazil (UAV_4D_Bio) |
| Grantee: | Antonio Maria Garcia Tommaselli |
| Support Opportunities: | Regular Research Grants |