H Chen, W Hu, K Yang, J Bai, K Wang - Applied Optics, 2021 - opg.optica.org
In this paper, we propose panoramic annular simultaneous localization and mapping (PA- SLAM), a visual SLAM system based on a panoramic annular lens. A hybrid point selection …
N Pan, S Gao, J Bai, K Wang - Optics Express, 2023 - opg.optica.org
We propose a compact form of the triple-channel panoramic annular lens (PAL) with a stereo field and no central blind area based on polarization technology, which solves the …
Visual odometry has received a great deal of attention during the past decade. However, being fragile to rapid motion and dynamic scenarios prevents it from practical use. Here, we …
S Gao, EA Tsyganok, X Xu - Applied Optics, 2021 - opg.optica.org
We propose a compact dual-channel panoramic annular lens (PAL) with a large aperture and high resolution to solve three major shortcomings of conventional PAL systems …
K Zhang, X Zhong, L Zhang, T Zhang - Applied optics, 2020 - opg.optica.org
A panoramic annular lens (PAL) comprises a panoramic annular head unit (PAHU) and a relay lens group. Due to the properties of annular imaging, single-channel PAL systems …
Semantic segmentation represents a promising means to unify different detection tasks, especially pixel-wise traversability perception as the fundamental enabler in robotic vision …
X Guo, Z Wang, W Zhou, Z Zhang - Sensors, 2021 - mdpi.com
This paper summarized the research status, imaging model, systems calibration, distortion correction, and panoramic expansion of panoramic vision systems, pointed out the existing …
As a common but troublesome branch of stray light, ghost images in catadioptric optical systems greatly limit the performances of such optics, including panoramic annular lenses …
H Liu, S Gao, J Bai, K Wang - Optics Communications, 2024 - Elsevier
The panoramic annular lens (PAL) is renowned for providing simultaneous vision of the panoramic space. However, its inherent central blind area is a significant drawback. In this …