Foveated dynamic range of the pyramidal CMOS image sensors

Saffih F., Hornsey R. I.

IEEE Transactions on Electron Devices, cilt.54, sa.12, ss.3422-3425, 2007 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 54 Sayı: 12
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1109/ted.2007.908892
  • Dergi Adı: IEEE Transactions on Electron Devices
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3422-3425
  • Anahtar Kelimeler: Active pixel sensor (APS), Classical CMOS imager, CMOS integrated circuits, Foveated imaging, Image processing, Pyramidal CMOS imager, Ring sampling
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

A novel intrascene dynamic range (DR) enhancement technique is proposed for pyramidal CMOS image sensors. The classic CMOS imager 1-D row sampling is replaced by a 2-D ring sampling, the vertical output buses by radial diagonal buses, and the raster scan with a bouncing scan. The result is a foveated DR enhancement mimicking biological vision. Experimental results validate the foveated DR enhancement of more than 50 dB on top of the imager intrinsic DR of 56.6 dB. The 32-ring (64 × 64 pixels) pyramidal CMOS imager is fabricated with dual-voltage (1.8 V, 3.3 V) standard 0.18-μ CMOS technology. © 2007 IEEE.