Morton (Z) scan based real-time variable resolution CMOS image sensor

Author

Artyomov, Evgeny ; Rivenson, Yair ; Levi, Guy ; Yadid-Pecht, Orly

Author_Institution

VLSI Syst. Center, Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

fYear

2004

fDate

13-15 Dec. 2004

Firstpage

145

Lastpage

148

Abstract

An image sensor architecture with an alternative image scan method, based on Morton (Z) order, is presented. This scan, compared to the conventional row (raster) scan, enables faster and efficient mean (average) computation of square image blocks. Digital averaging is used and the pixel data is read out with either the original resolution, a 2×2 or a 4×4 block averaging. A test chip of 128×128 array has been implemented in 0.35 μm CMOS technology, has 15% fill factor, is operated by a 3.3V supply and dissipates 30mW at video rate.

Keywords

CMOS image sensors; image resolution; real-time systems; video signal processing; 0.35 micron; 3.3 V; 30 mW; Morton (Z) order; digital averaging; image sensor architecture; real-time image sensor; scan based image sensor; square image blocks; variable resolution image sensor; video rate; CMOS image sensors; CMOS technology; Capacitors; Computer architecture; Image resolution; Image sensors; Pixel; Sensor arrays; Signal resolution; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 2004. ICECS 2004. Proceedings of the 2004 11th IEEE International Conference on

Print_ISBN

0-7803-8715-5

Type

conf

DOI

10.1109/ICECS.2004.1399635

Filename

1399635