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Patent Searching and Data


Title:
FOCUS POSITION EVALUATION DEVICE, METHOD AND PROGRAM, AND DETERMINER
Document Type and Number:
WIPO Patent Application WO/2020/066250
Kind Code:
A1
Abstract:
The purpose of the present invention is to make it possible to improve the evaluation accuracy of a focus position in a focus position evaluation device, method and program, and a determiner. This focus position evaluation device includes a marker image detection unit and a focus position evaluation unit. The marker image detection unit detects a marker image from a photographic image acquired by photographing, as an object to be observed, a marker, which is spherical and tinted with a color that absorbs light transmitted through a photographing optical system, by a photographing device. The focus position evaluation unit evaluates a focus position of the photographing optical system on the basis of the marker image.

Inventors:
MUROOKA TAKASHI (JP)
Application Number:
PCT/JP2019/028971
Publication Date:
April 02, 2020
Filing Date:
July 24, 2019
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B21/00; G02B7/28; G02B7/36; G02B21/26; G02B21/36; G03B13/36; H04N5/232; H04N17/00
Domestic Patent References:
WO2009133697A12009-11-05
Foreign References:
JP2015523577A2015-08-13
JP2015090471A2015-05-11
JP2015158570A2015-09-03
Attorney, Agent or Firm:
NAKASHIMA Junko et al. (JP)
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