An Active Pixel CMOS Separable Transform Image Sensor

被引:10
|
作者
Chi, Yu M. [1 ,2 ]
Abbas, Adeel [3 ]
Chakrabartty, Shantanu [4 ]
Cauwenberghs, Gert [1 ,2 ]
机构
[1] Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92093 USA
[2] Univ Calif San Diego, Div Biol Sci, San Diego, CA 92093 USA
[3] Thomson Corp Res, Princeton, NJ 08540 USA
[4] Michigan State Univ, Dept Elect & Comp Engn, E Lansing, MI 48824 USA
关键词
ON-A-CHIP;
D O I
10.1109/ISCAS.2009.5117997
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper presents a 128 x 128 charge-mode CMOS imaging sensor that computes separable transforms directly on the focal plane. The pixel is a unique extension of the widely reported Active Pixel Sensor (APS) cell. By capacitively coupling across an array of such cells onto switched capacitor circuits, computation of any unitary 2-D transform that is separable into inner and outer products is possible. This includes the Walsh, Hadamard and Haar basis functions. This scheme offers several advantages including multiresolution imaging, inherent de-noising, compressive sampling and lower integration voltage and faster readout. The chip was implemented on a 0.5 mu m CMOS process and measures 9mm(2) in MOSIS' submicron design rules.
引用
收藏
页码:1281 / +
页数:2
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