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Geometric model and assessment of a dual-fisheye imaging system
(2018-06-01)
This paper presents a technique for the calibration of a 360° dual imaging system (Ricoh Theta S) composed of two cameras with fisheye lenses specially mounted in a common structure. The experiments are based on calibration ...
Geometric model of a dual-fisheye system composed of hyper-hemispherical lenses
(Universidade Estadual Paulista (Unesp), 2020-03-03)
A combinação de duas lentes com FOV hiper-hemisférico em posição opostas pode gerar um sistema omnidirecional (FOV 360°) leve, compacto e de baixo custo, como Ricoh Theta S e GoPro Fusion. Entretanto, apenas algumas técnicas ...
A Fisheye image matching method boosted by recursive search space for close range photogrammetry
(2019-06-01)
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 ...
ADAPTIVE WEIGHTING of IMAGE OBSERVATIONS for SELF-CALIBRATION with FISHEYE IMAGES
(2021-06-17)
Fisheye cameras have been widely used in photogrammetric applications, but conventional techniques must be adapted to consider specific features of fisheye images, such as nonuniform resolution in the images. This work ...
A feasibility study on incremental bundle adjustment with fisheye images and low-cost sensors
(2019-01-01)
Low cost imaging and positioning sensors are opening new frontiers for applications in near real-time Photogrammetry. Omnidirectional cameras acquiring images with 360° coverage, when combined with information coming from ...