Title:
CALIBRATION DATA SELECTION DEVICE, METHOD OF SELECTION, SELECTION PROGRAM, AND THREE DIMENSIONAL POSITION MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/125937
Kind Code:
A1
Abstract:
Appropriate calibration data is selected by eliminating useless calculation and shortening the calculation time. Calibration data corresponding to the focus position of an image capturing optical system is applied to a stereo image prior to measuring the three dimensional position of the object to be measured from the stereo image. When selecting calibration data, the object distance is calculated based on the disparity obtained from the reduced stereo image and is defined as an estimated focus distance corresponding to the focus position, wherein calibration data is selected such that the applicable distance range is set to include the estimated focus distance. Each viewpoint image is reduced to within the range that makes it possible to identify which range is applied among the applicable distance ranges set for each reference focus distance corresponding to the calibration data.
Inventors:
ISHIYAMA, Eiji (324 Uetake-cho 1-chome, Kita-ku, Saitama-sh, Saitama 24, 〒3319624, JP)
石山 英二 (〒24 埼玉県さいたま市北区植竹町１丁目３２４番地 富士フイルム株式会社内 Saitama, 〒3319624, JP)
石山 英二 (〒24 埼玉県さいたま市北区植竹町１丁目３２４番地 富士フイルム株式会社内 Saitama, 〒3319624, JP)
Application Number:
JP2011/058427
Publication Date:
October 13, 2011
Filing Date:
April 01, 2011
Export Citation:
Assignee:
FUJIFILM Corporation (26-30, Nishiazabu 2-chome Minato-k, Tokyo 20, 〒1068620, JP)
富士フイルム株式会社 (〒20 東京都港区西麻布２丁目２６番３０号 Tokyo, 〒1068620, JP)
ISHIYAMA, Eiji (324 Uetake-cho 1-chome, Kita-ku, Saitama-sh, Saitama 24, 〒3319624, JP)
富士フイルム株式会社 (〒20 東京都港区西麻布２丁目２６番３０号 Tokyo, 〒1068620, JP)
ISHIYAMA, Eiji (324 Uetake-cho 1-chome, Kita-ku, Saitama-sh, Saitama 24, 〒3319624, JP)
International Classes:
G01C3/00; G01B11/00; G01C3/06
Attorney, Agent or Firm:
KOBAYASHI, Kazunori (Taiyo-seimei-otsuka Bldg. 3F, 25-1, Kita-otsuka 2-chome,,Toshima-k, Tokyo 04, 〒1700004, JP)
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Claims: