Title :
Vibro-visual correlation imager for extracting complex differentials and Laplacian
Author :
Ando, Shigeru ; Kurihara, Toru
Author_Institution :
Univ. of Tokyo, Tokyo, Japan
Abstract :
In this paper, we present theoretical foundation and experimental evaluation of a biomimicry vibro-visual correlation imager with various feature extraction capability. Mimicking the involuntary movement of human eyes, it vibrates rapidly and finely a mirror in its visual axis so as to generate an equivalent vibration of every pixel in a doubly circular locus. The time-varying intensity is captured by a correlation image sensor (CIS) with synchronous reference signals to the vibration, and complex first/second order differentials and Laplacian are obtained as the image features. Theoretical foundations and an implementation result of this system using a novel 640×512 pixel device are presented. Several experimental results using it are shown.
Keywords :
Laplace equations; differential equations; eye; feature extraction; image sensors; vibrations; visual perception; CIS; biomimicry vibro-visual correlation imager; complex Laplacian extraction; complex differentials extraction; correlation image sensor; doubly circular locus; equivalent vibration; experimental evaluation; feature extraction capability; human eyes; image features; involuntary movement; synchronous reference signals; theoretical foundation; time-varying intensity; visual axis; Correlation; Feature extraction; Image edge detection; Image sensors; Laplace equations; Mirrors; Vibrations;
Conference_Titel :
SICE Annual Conference (SICE), 2011 Proceedings of
Conference_Location :
Tokyo
Print_ISBN :
978-1-4577-0714-8
