Share Email Print
cover

Proceedings Paper

Calibration of a saccadic camera system to adapt to lens distortions
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The human vision system (HVS) is remarkably robust against eye distortions. Through a combination of eye movements and visual feedback, the HVS can often appropriately interpret scene information acquired from flawed optics. Inspired by biological systems, we have built an electronically and mechanically reconfigurable "saccadic" camera system. The saccadic camera is designed to efficiently examine scenes through foveated imaging, where scrutiny is reserved for salient regions of interest. The system's "eye" is an electronic image sensor used in multiple modes of resolution. We use a subwindow set at high resolution as the system's fovea, and capture the remaining visual field at a lower resolution. The ability to program the subwindow's size and position provides an analog to biological eye movements. Similarly, we can program the system's mechanical components to provide the "neck's" locomotion for modified perspectives. In this work, we use the saccadic camera to develop a "work-around" routine in response to possible degradations in the camera's lens. This is particularly useful in situations where the camera's optics are exposed to harsh conditions, and cannot be easily repaired or replaced. By exploiting our knowledge of the image sensor's electronic coordinates relative to the camera's mechanical movement, the system is able to develop an empirical distortion model of the image formation process. This allows the saccadic camera to dynamically adapt to changes in its image quality.

Paper Details

Date Published: 13 October 2005
PDF: 11 pages
Proc. SPIE 5969, Photonic Applications in Biosensing and Imaging, 59692A (13 October 2005); doi: 10.1117/12.628802
Show Author Affiliations
Winnifred Wong, Univ. of Waterloo (Canada)
Richard I. Hornsey, York Univ. (Canada)


Published in SPIE Proceedings Vol. 5969:
Photonic Applications in Biosensing and Imaging
Brian C. Wilson; Richard I. Hornsey; Warren C. W. Chan; Ulrich J. Krull; Robert A. Weersink; Kui Yu, Editor(s)

© SPIE. Terms of Use
Back to Top