Automatic zoom magnification control using detection of eyelid c

Details Automatic zoom magnification control using detection of eyelid c Automatic zoom magnification control using detection of eyelid c

1997-11-10

1998-11-17

Perkey, W. B.

Photography

Eye tracking

396 77, G03B 1700

Patent

active

058390006

ABSTRACT:
The apparatus is designed to adjust the zoom magnification control of a camera having a variable-magnification device, and includes a camera optical system for converting a scene into an image, a view finder for displaying said image to a user, a zoom control for changing the focal length of the lens, a detector coupled to the view finder for detecting a zoom condition of the user's face, and an analysis system for analyzing the detected zoom condition and for generating an input signal to the zoom control to change the focal length of the lens as a function of the zoom condition of the user's face.
The method includes the steps of converting a scene into an image using a camera optical system; displaying the image to a user; detecting a zoom condition of the user's face with a zoom-condition detector; analyzing the detected zoom condition of the user's face; and generating an input signal to a zoom control for changing the focal length of the lens as a function of the zoom condition of the user's face.

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Takami et al., Computer interface to use head and eyeball movement for handicapped people, Proceedings of the 1995 IEEE International Conference on Systems, Man and Cybernetics, Part 2 of 5, v2, Oct. 22-25, 1995.
Abou-Ali and Porter, Man-machine interface through eyeball direction of gaze, Proceedings of the 1997 29th Southeastern Symposium on System Theory, Mar. 9-11, 1997.

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