Omni-directional 3D measurement using double fish-eye stereo vision

Iguchi, Yosuke; Yamaguchi, Junichi

doi:10.1109/fcv.2015.7103698

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…Although this method can stably measure in all directions, it has some problems in terms of computational cost, such as the use of four cameras and the need to process the four images by expansion and merging. In the paper by Yosuke Iguchi (4) proposes a stereo distance measurement using a full dome camera. This method attempts to detect all directions by using two cameras, but it has some problems such as the fact that both cameras are exposed to each other during the measurement, errors in feature inspection caused by the strong distortion caused by the fisheye, and the difficulty in measuring distances in the distance.…”

Section: Existing Methodsmentioning

confidence: 99%

“…The paper by Miriam Schonbein et al (5) proposes a method of installing and measuring Hyper Omni Vision in front of the vehicle roof and on the left and right sides. Similar to Yosuke Iguchi's method (4) , this method has problems such as the fact that one sensor is captured and the large difference between the two images makes matching from image expansion difficult.…”

Section: Existing Methodsmentioning

confidence: 99%

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Research on Omni-directional Stereo Measurement for Automatic Driving Assistance

Ozawa

Bao

2022

The Proceedings of the 9th International Conference on Intelligent Systems and Image Processing 2022

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This paper proposes an omnidirectional stereo measurement based on vertical disparity estimation using a Hyper Omni Vision. In the field of stereo cameras, there are studies that attempt to measure a wide area using a fisheye camera or an all-sky sphere type camera, but this stereo camera system using a Hyper Omni Vision that can capture all directions in one shot enables measurement in all directions, which has been difficult to achieve with conventional stereo cameras. Experiments have shown that the system can be used to generate depth images in all directions.

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Section: Existing Methodsmentioning

confidence: 99%

Section: Existing Methodsmentioning

confidence: 99%

Research on Omni-directional Stereo Measurement for Automatic Driving Assistance

Ozawa

Bao

2022

The Proceedings of the 9th International Conference on Intelligent Systems and Image Processing 2022

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“…The first group of receivers employs only one photodetector and some additional optical elements, for example, the fish eye optical system mainly used in robotics [5,6]. A system using two mirrors, similar to telescope systems, serves as another example [7,8].…”

Section: State-of-the-artmentioning

confidence: 99%

Free Space Optic Receiver with Strongly Overlapped Photodetectors’ Field of View

Witas

Nedoma

2019

Applied Sciences

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In this study, we designed a mobile free space optic receiver that uses several photodetectors to provide omnidirectional receiving capability. Assuming only one transmitter, it is a receiver which builds a single input multiple output optical channel. The photodetectors are fixed to truncated pyramid walls. Electrical signals from the photodetectors are processed using an equal gain combining technique. This architecture allows simple circuits and enables additive noise suppression. The minimum angle between the pyramid base and the direction of falling rays was calculated to determine the threshold for additive noise suppression. Two areas of interest presented themselves: the processing of very weak electrical signals often drowned in noise, and optimization of the number of photodetectors whose fields of view overlapped strongly. We outline the design of the optical receiver circuitry and provide some practical hints concerning its assembly. The receiver was evaluated using bit error rate measurements and comparing signal-to-noise ratio parameters for various photodetector numbers. The measured data confirm the theoretical assumptions.

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