This paper addresses the validation of a robust vision-based pose estimation technique using Photonic Mixer Device (PMD) sensor as single visual in close-range phase spacecraft rendezvous. First, it was necessary to integrate developed hybrid navigation for PMD into hardware-in-the-loop (HIL) rendezvous system by German Aerospace Center (DLR). Thereafter, HIL tests were conducted European Proxi...

Abstract Although compiling queries to efficient machine code has become a common approach for query execution, number of newly created database system projects still refrain from using compilation. It is sometimes claimed that the intricacies generation make compilation-based engines too complex. Also, major barrier adoption, especially interactive ad hoc queries, long compilation time. In thi...

Since precise shadows can be generated in real-time, graphics applications often use the shadow volume algorithm. This algorithm was limited to manifold casters, but recently has been extended to general non-manifold casters with oriented triangles. We provide a further extension to general non-manifold meshes and an additional extension to shadows of transparent casters. To achieve these, we f...

The existing slender target detection methods based on optical satellite images are greatly affected by the perspective and solar perspective. Due to limited data sources, it is difficult implement a fully data-driven approach. This work introduces imaging parameters of images, which reduces influence perspectives perspectives, demand for amount data. We improve oriented bounding box (OBB) dete...

Abstract The aim of the present study is to show varying asymmetries during decay sunspot groups. source input data SOHO/MDI-Debrecen Database catalog that contains magnetic polarity for time interval 1996–2010. Several types were examined on selected sample 142 leading–following asymmetry increases in three phases and exhibits anticorrelation with size. It also related a hemispheric asymmetry:...

In this study, the morphological characteristics and length-weight relationships of Sciaena umbra (Linnaeus, 1758) belonging to Sciaenidae family, which is represented by five species in Mediterranean basin two Black Sea, were investigated. Sampling was carried out Sea Region (Samsun, Ordu, Giresun, Trabzon) between March 2019 February 2020. A total 54 individuals sampled 15 different metric me...