Real-time range sensing with a Scheimpflug camera and a single custom sensor/processor chip

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Tarih

2003

Dergi Başlığı

Dergi ISSN

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Yayıncı

SPIE-Int Soc Optical Engineering

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

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Dergi sayısı

Özet

An image-based range sensing technique is presented. The technique is originally considered for highway collision avoidance applications but its generality makes it suitable for application in robotics, manufacturing and metrology as well. It relies on depth from focus but, unlike conventional techniques, it extracts range with a single unmodulated Scheimpflug camera in continuous time. The range extraction algorithm is memoryless and simple enough to be implemented on the same chip with photosensors. The technique deploys a sensor plane that is tilted at a non-orthogonal angle with respect to the optical axis of the lens, and the optical axis intersects the sensor plane at the focal point. This optical arrangement creates a focusable object plane in an orientation parallel to the optical axis, and thus, enables range sensing along the same axis. The paper elaborates on the details of focus sensing on the tilted sensor plane, describes the CMOS sensor/processor chip designed and prototyped for this application, and presents experimental results.

Açıklama

Anahtar Kelimeler

Cameras, CMOS integrated circuits, CMOS photosensor, Collision avoidance, Defocus blur, Focus, Focus detection, Focusing, Image processing, Microprocessor chips, Photosensitivity, Range finding, Range sensing, Range sensors, Real time systems, Robotics, Scheimpflug camera

Kaynak

Proceedings of SPIE - The International Society for Optical Engineering

WoS Q Değeri

N/A

Scopus Q Değeri

N/A

Cilt

5012

Sayı

Künye

Çilingiroğlu, U., Çilingiroğlu, E., Chen, S. & Yarman, B. S. B. (2003). Real-time range sensing with a Scheimpflug camera and a single custom sensor/processor chip. Paper presented at the Proceedings of SPIE - The International Society for Optical Engineering, 5012, 110-121. doi:10.1117/12.477480