Design of a compact two-channel panoramic optical system

Huang, Yunhan; Liu, Zhiying; Fu, Yuegang; Zhang, He

doi:10.1364/oe.25.027691

Cited by 20 publications

(10 citation statements)

References 12 publications

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“…To obtain more visual field information while keeping the system compact, Huang et al [167] proposed an even ogive surface and a compact dual-channel panoramic optical system with FoVs of 360 • ×(38 • ∼80 • ) and 360 • ×(102 • ∼140 • ) in 2017. In 2020, ogive panoramic annular lens was used to realize the ultra-low distortion design with a FoV of 360 • ×(40 • ∼95 • ) and F -θ distortion less than 0.8% [168].…”

Section: G Panoramic Annular Lensmentioning

confidence: 99%

“…Thanks to the multi-degree of freedom design parameters of the aspheric surface, the panoramic imaging system can realize the system parameters, structure, and functions that are difficult to be realized in traditional panoramic systems. The proposed odd aspheric surface [78], even aspheric surface [179], Q-type aspheric surface [207]- [209], extended polynomial aspheric surface [193], annularly-stitched aspheric surface [103], [210], ogive aspheric surface [166], [168], and even Ogive aspheric surface [167] have been proved to be successfully applied to the design of panoramic systems. The asymmetric freeform surface also makes the panoramic optical system have a new zoom function, including Alvarez surface freeform surface [191] and XY polynomial aspheric surface [189].…”

Section: New Engines Of Panoramic Optical Systems a Freeform Surface ...mentioning

confidence: 99%

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Review on Panoramic Imaging and Its Applications in Scene Understanding

Gao¹,

Yang²,

Sheng³

et al. 2022

Preprint

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With the rapid development of high-speed communication and artificial intelligence technologies, human perception of real-world scenes is no longer limited to the use of small Field of View (FoV) and low-dimensional scene detection devices. Panoramic imaging emerges as the next generation of innovative intelligent instruments for environmental perception and measurement. However, while satisfying the need for large-FoV photographic imaging, panoramic imaging instruments are expected to have high resolution, no blind area, miniaturization, and multi-dimensional intelligent perception, and can be combined with artificial intelligence methods towards the next generation of intelligent instruments, enabling deeper understanding and more holistic perception of 360 • real-world surrounding environments. Fortunately, recent advances in freeform surfaces, thinplate optics, and metasurfaces provide innovative approaches to address human perception of the environment, offering promising ideas beyond conventional optical imaging. In this review, we begin with introducing the basic principles of panoramic imaging systems, and then describe the architectures, features, and functions of various panoramic imaging systems. Afterwards, we discuss in detail the broad application prospects and great design potential of freeform surfaces, thin-plate optics, and metasurfaces in panoramic imaging. We then provide a detailed analysis on how these techniques can help enhance the performance of panoramic imaging systems. We further offer a detailed analysis of applications of panoramic imaging in scene understanding for autonomous driving and robotics, spanning panoramic semantic image segmentation, panoramic depth estimation, panoramic visual localization, and so on. Finally, we cast a perspective on future potential and research directions for panoramic imaging instruments.

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Section: G Panoramic Annular Lensmentioning

confidence: 99%

Section: New Engines Of Panoramic Optical Systems a Freeform Surface ...mentioning

confidence: 99%

Review on Panoramic Imaging and Its Applications in Scene Understanding

Gao¹,

Yang²,

Sheng³

et al. 2022

Preprint

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“…Primarily, the large incidence angle of light due to field curvature in fisheye systems leads to much more serious astigmatism and a higher-order chromatic aberration, which is difficult to correct especially as the FOV angle increases [10], [11]. Most papers only discuss strategies to compensate or correct for optical artifacts which is much more apparent in fisheye or wide FOV panoramic optical systems [11], [12], [13]. In contrast, in this paper, we discuss the optical artifacts associated with wide FOV systems and their impact on computer vision performance.…”

Section: Introductionmentioning

confidence: 99%

Surround-View Fisheye Optics in Computer Vision and Simulation: Survey and Challenges

Jakab,

Deegan,

Sharma

et al. 2024

IEEE Trans. Intell. Transport. Syst.

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In this paper, we provide a survey on automotive surround-view fisheye optics, with an emphasis on the impact of optical artifacts on computer vision tasks in autonomous driving and ADAS. The automotive industry has advanced in applying state-of-the-art computer vision to enhance road safety and provide automated driving functionality. When using camera systems on vehicles, there is a particular need for a wide field of view to capture the entire vehicle's surroundings, in areas such as low-speed maneuvering, automated parking, and cocoon sensing. However, one crucial challenge in surround-view cameras is the strong optical aberrations of the fisheye camera, which is an area that has received little attention in the literature. Additionally, a comprehensive dataset is needed for testing safety-critical scenarios in vehicle automation. The industry has turned to simulation as a cost-effective strategy for creating synthetic datasets with surround-view camera imagery. We examine different simulation methods (such as model-driven and data-driven simulations) and discuss the simulators' ability (or lack thereof) to model real-world optical performance. Overall, this paper highlights the optical aberrations in automotive fisheye datasets, and the limitations of optical reality in simulated fisheye datasets, with a focus on computer vision in surround-view optical systems.

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“…Additionally, PALs offer more expansive fields of view (FoV), higher resolution, and less distortion at the marginal FoV. Due to the above advantages, it has great potential in the future development, [1][2][3][4][5][6] especially in the multidimensional information perception field. The existing panoramic stereo imaging system usually has a large and irregular mirror in the front, whose irregular surface is too complex and expensive to manufacture and it demands very strict assembly accuracy.…”

Section: Introductionmentioning

confidence: 99%

Design of a single-sensor gazing panoramic stereo imaging system with no central blind area

Pan,

Gao,

Bai

2023

Optical Design and Testing XIII

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We propose a single-sensor gazing panoramic stereo imaging system with no central blind area based on polarization technology. This solution addresses the issue of traditional stereo panoramic systems, which often feature large and complex mirrors in front to reflect light. Drawing inspiration from the traditional dual-channel structure, we apply polarization technology to the first reflective surface, creating a third channel for stereo vision. Our system demonstrates a promising approach to achieving stereo vision without the need for additional complex structures on the original basis.

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Design of a compact two-channel panoramic optical system

Cited by 20 publications

References 12 publications

Review on Panoramic Imaging and Its Applications in Scene Understanding

Review on Panoramic Imaging and Its Applications in Scene Understanding

Surround-View Fisheye Optics in Computer Vision and Simulation: Survey and Challenges

Design of a single-sensor gazing panoramic stereo imaging system with no central blind area

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