Camera for directly generating a gradient image

Details Camera for directly generating a gradient image Camera for directly generating a gradient image

2006-05-02

2006-05-02

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S208200, C382S199000, C348S371000

Reexamination Certificate

active

07038185

ABSTRACT:
A camera includes a set of sensing elements. Each sensing element is arranged at an image plane in an energy field to measure a magnitude and sign of a local gradient of the energy field. Each sensing element includes at least two energy intensity sensors. Each energy sensor measures a local intensity of the energy field. Logarithms of the intensities are subtracted from each other to obtain the magnitude and sign of the gradients. A Poisson equation is solved using the gradients to obtain an output image of the energy field.

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