Electro-optical IFS finder
First Claim
1. A system for finding a proper Iterated Function System (IFS) to model a given object, comprising:
- means for providing an input image of the object to be modelled;
means for directing the input image through a plurality of optical branches, each branch for optically performing an affine transformation on the input image, each branch comprising a means for selectively optically rotating the input image, means for selectively optically magnifying or demagnifying the input image, and means for selectively optically translating the input image so as to perform the desired affine transformation;
means for adjusting rotational position of said optical rotating means, said means for adjusting rotational position being responsive to a first control signal;
means for adjusting magnification of said magnifying/demagnifying means, said means for adjusting magnification being responsive to a second control signal;
means for adjusting translation position of said means for optically translating, said means for optically translating being responsive to a third control signal;
optical means for combining the respective transformed images from each branch at an output image plane to provide an output tiled image of the object;
means for comparing the input image to the output image and providing a signal indicative of the goodness of the match between the output image and the input image; and
controller means responsive to said signal indicative of the goodness of said match for generating said first, second and third control signals to vary the optical rotation, magnification/demagnification and translation to find an IFS which provides a tiled image which matches the input image of said object.
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Abstract
An electro-optical system that implements the self-tiling process of fining proper Iterated Function Systems for modeling natural objects. The system can operate in two different modes, a real-time interactive mode and an automated mode. The purpose of the system is to speed up the process of finding a proper IFS for a given object to be modeled. The system makes use of optical processing, including optical means for rotating, magnifying/demagnifying and translating an input image. Optical beamsplitters are used to combine transformed images to produce a tiled output image. In one embodiment, an automated controller evaluates the goodness of the match between the tiled image and the input image and generates control signals which cause adjustment of the settings of the optical means. The process is repeated automatically until the match is sufficiently good. The invention can also be operated in a manual, man-in-the-loop mode.
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Citations
8 Claims
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1. A system for finding a proper Iterated Function System (IFS) to model a given object, comprising:
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means for providing an input image of the object to be modelled; means for directing the input image through a plurality of optical branches, each branch for optically performing an affine transformation on the input image, each branch comprising a means for selectively optically rotating the input image, means for selectively optically magnifying or demagnifying the input image, and means for selectively optically translating the input image so as to perform the desired affine transformation; means for adjusting rotational position of said optical rotating means, said means for adjusting rotational position being responsive to a first control signal; means for adjusting magnification of said magnifying/demagnifying means, said means for adjusting magnification being responsive to a second control signal; means for adjusting translation position of said means for optically translating, said means for optically translating being responsive to a third control signal; optical means for combining the respective transformed images from each branch at an output image plane to provide an output tiled image of the object; means for comparing the input image to the output image and providing a signal indicative of the goodness of the match between the output image and the input image; and controller means responsive to said signal indicative of the goodness of said match for generating said first, second and third control signals to vary the optical rotation, magnification/demagnification and translation to find an IFS which provides a tiled image which matches the input image of said object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification