Real-time range sensing with a Scheimpflug camera and a single custom sensor/processor chip
Yükleniyor...
Tarih
2003
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
SPIE-Int Soc Optical Engineering
Erişim Hakkı
info:eu-repo/semantics/closedAccess
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
