Subpixel resolution binocular visual tracking using analog VLSI vision sensors

Author

Lu, Ziyi ; Shi, Bertram E.

Author_Institution

Hong Kong Univ. of Sci. & Technol., China

Volume

47

Issue

12

fYear

2000

fDate

12/1/2000 12:00:00 AM

Firstpage

1468

Lastpage

1475

Abstract

This paper describes the application of an analog VLSI vision sensor to active binocular tracking. The sensor outputs are used to control the vergence angles of the two cameras and the tilt angle of the head so that the center pixels of the sensor arrays image the same point in the environment. One distinguishing feature of the sensor used here is the possibility to resolve target displacement with subpixel resolution via a phase-based algorithm, which integrates information over multiple pixels

Keywords

VLSI; analogue integrated circuits; analogue processing circuits; cellular neural nets; feedback; image processing equipment; image sensors; neural chips; optical tracking; robot vision; stereo image processing; target tracking; Gabor filters; active binocular tracking; analog VLSI vision sensors; binocular visual tracking; head tilt angle; phase-based algorithm; phototransistor array; sensor arrays; stereo vision; subpixel resolution; target displacement; two camera set-up; vergence angles control; visual feedback; CMOS image sensors; Cameras; Gabor filters; Head; Image sensors; Intelligent sensors; Pixel; Sensor arrays; Sensor phenomena and characterization; Very large scale integration;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.899641

Filename

899641