Integrated high resolution division of focal plane image sensor with aluminum nanowire polarization filters

Author(s):  
Viktor Gruev ◽  
Rob Perkins ◽  
Timothy York
2002 ◽  
Vol 2 (6) ◽  
pp. 559-565 ◽  
Author(s):  
A. Zarandy ◽  
R. Dominguez-Castro ◽  
S. Espejo

2008 ◽  
Vol 55 (9) ◽  
pp. 2561-2572 ◽  
Author(s):  
Zhiqiang Lin ◽  
M.W. Hoffman ◽  
N. Schemm ◽  
W.D. Leon-Salas ◽  
S. Balkir

1981 ◽  
Vol 20 (6) ◽  
Author(s):  
Robert A. Sprague ◽  
William D. Turner

2018 ◽  
Vol 11 (11) ◽  
pp. 115001 ◽  
Author(s):  
Lihuan Zhao ◽  
Zhiyuan Gao ◽  
Jie Zhang ◽  
Liwei Lu ◽  
Deshu Zou

2001 ◽  
Author(s):  
Ralph Etienne-Cummings ◽  
Dmitrii I. Gruev ◽  
Mathew Clapp

2013 ◽  
Vol 8 (1) ◽  
pp. 14-21
Author(s):  
Fernanda D. V. R. Oliveira ◽  
Hugo L. Haas ◽  
José Gabriel R. C. Gomes ◽  
Antonio Petraglia

The interest in focal-plane processing techniques, by which image processing is carried out at the pixel level, has increased since the advent of active pixel sensors in the middle 90’s. By sharing processing circuitry by a group of neighboring pixels such techniques enable high-speed imaging operation and massive parallel computation. Focal-plane image compression is particularly interesting, because it allows for further reduction in data rates. The proposed approach also benefits from processing currents rather than voltages, which not only suits current-mode APS imagers, but also enables the circuits to operate at low voltage supply levels and achieve high speed. Moreover, arithmetic computations such as additions and scaling are easily implemented in current mode. Whereas current-mode imaging architectures produce higher fixed pattern noise (FPN) figures than their voltage-mode counterparts, low FPN can be achieved by applying correlated double sampling (CDS) and gain correction techniques. This work presents a 32 × 32 gray-level imaging integrated circuit featuring focal plane image compression, such that for each 4 × 4 pixel block, analog circuits implement differential pulse-code modulation, linear transform, and vector quantization. Other processing functions implemented in the chip are CDS and A/D conversion. Theoretical details are described, as well as the test setup of the chip fabricated in a 0.35 μm CMOS process. To validate the proposed technique, experimental results and captured photographs are shown. The CMOS imager compresses captured images at 0.94 bits/pixel for an overall power consumption below 40 mW (white image), which is equivalent to approximately 36 μW per pixel. Using photographs taken from bar-target pattern inputs, it is shown that details up to 2 cycles/c mare preserved in the decoded images.


1998 ◽  
Author(s):  
Takayuki Hamamoto ◽  
Yasuhiro Ohtsuka ◽  
Kiyoharu Aizawa

Author(s):  
Jorge Fernandez-Berni ◽  
Laurentiu Acasandrei ◽  
Ricardo Carmona-Galan ◽  
Angel Barriga-Barros ◽  
Angel Rodriquez-Vazquez

2004 ◽  
Author(s):  
Klaus Janschek ◽  
Valerij Tchernykh ◽  
Serguei Dyblenko ◽  
Gregory Flandin ◽  
Bernd Harnisch

Sign in / Sign up

Export Citation Format

Share Document