Method and device for synthesizing all-objects-in-focus images

Details Method and device for synthesizing all-objects-in-focus images Method and device for synthesizing all-objects-in-focus images

1994-01-27

1996-04-23

Jankus, Almis R.

Optics: measuring and testing

Range or remote distance finding

With photodetection

395128, 395135, 395136, 356359, 382276, G06T 500

Patent

active

055111556

ABSTRACT:
A method and apparatus for forming a synthesized optical image with all of the desired objects in focus. A prescribed number of optical images of the same scene are provided by recording an optical image at a respective focal distance and changing the focal distance for each additional optical image as recorded. The optical images are subjected to wavelet transformation to form a multi-resolution representation. The coefficients of the various multi-resolution representations are compared at the same position to detect the maximum spectral amplitudes. Based on the detected maximum spectral amplitudes, another multi-resolution representation is obtained. Then, an inverse wavelet transformation is performed to obtain the synthesized optical image.

REFERENCES:
patent: 4929951 (1990-05-01), Small
patent: 5112129 (1992-05-01), Davidson et al.
patent: 5117466 (1992-05-01), Buican et al.

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