FOCUSING APPARATUS, FOCUSING METHOD, AND STORAGE MEDIUM STORING PROGRAM

WIPO Patent Application WO/2018/110282

A1

Provided are a focusing apparatus and a focusing method that are capable of ensuring focusing by determining a true image deviation amount at a high speed even for an object having a cyclic pattern. The present invention performs a focusing operation by: setting, in an imaging region, a first focus detection region and a second focus detection region that is narrower than the first focus detection region and that is included in the first focus detection region; calculating a phase difference (Cor_x1) on the basis of imaged data of the first focus detection region; calculating a phase difference (Cor_x2) on the basis of imaged data of the second focus detection region; when an object is determined not to be a cyclic object on the basis of the correlation degree of the first focus detection region but determined to be the cyclic object on the basis of the correlation degree of the second focus detection region, selecting a phase difference (D10) closest to a phase difference (Stmin) that is detected in the first focus detection region, among a plurality of the phase differences detected in the second focus detection region.

YAMAZAKI YUKIE (JP)
KUNUGI KAZUMASA (JP)
OMATA YOSHINOBU (JP)
KIKUCHI TETSUO (JP)

PCT/JP2017/042898

June 21, 2018

November 29, 2017

Click for automatic bibliography generation  

OLYMPUS CORP (JP)

G02B7/34; G03B13/36; H04N5/232

JP2015055635A	2015-03-23
JP2012185228A	2012-09-27
JP2011150179A	2011-08-04
JPH0875997A	1996-03-22
JP2015018205A	2015-01-29

KOBAYASHI Kazutada (JP)

View/Download PDF      PDF Help

Previous Patent: CODE PREDICTION DEVICE, IMAGE DECODING DEVICE, AND IMAGE ENCODING DEVICE

Next Patent: DRIVING ASSISTANCE DEVICE