Focus enhancing method

Details Focus enhancing method Focus enhancing method

1989-05-24

1991-06-11

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Recording apparatus

358226, H04N 5225

Patent

active

050237241

ABSTRACT:
A method for enhancing the high frequency information of an object being viewed by a video camera, to detect edges and object detail more accurately by projecting a preselected optical pattern onto the surface of the object. As the spatial plane of the camera travels through the object space, the projected pattern follows, always remaining in focus with the moving plane. The sharp detail of the pattern adds to the high frequency information read by the camera when the viewed object comes into focus and peaks when the object is in focus.

REFERENCES:
patent: 4584704 (1986-04-01), Ferren
patent: 4591918 (1986-05-01), Hisano
patent: 4695893 (1987-09-01), Makino et al.
patent: 4907024 (1990-03-01), Takahashi

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