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1. (WO2015045704) IMAGING DEVICE AND FOCUSING CONTROL METHOD
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/045704 International Application No.: PCT/JP2014/072198
Publication Date: 02.04.2015 International Filing Date: 25.08.2014
IPC:
G02B 7/28 (2006.01) ,G02B 7/34 (2006.01) ,G02B 7/36 (2006.01) ,G03B 13/36 (2006.01) ,H04N 5/232 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
34
using different areas in a pupil plane
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
7
Mountings, adjusting means, or light-tight connections, for optical elements
28
Systems for automatic generation of focusing signals
36
using image sharpness techniques
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
13
Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
32
Means for focusing
34
Power focusing
36
Autofocus systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
232
Devices for controlling television cameras, e.g. remote control
Applicants:
富士フイルム株式会社 FUJIFILM CORPORATION [JP/JP]; 東京都港区西麻布2丁目26番30号 26-30, Nishiazabu 2-chome, Minato-ku, Tokyo 1068620, JP
Inventors:
入江 史憲 IRIE Fuminori; JP
Agent:
小田原 修一 ODAHARA Shuichi; JP
Priority Data:
2013-20191427.09.2013JP
Title (EN) IMAGING DEVICE AND FOCUSING CONTROL METHOD
(FR) DISPOSITIF D'IMAGERIE ET PROCÉDÉ DE COMMANDE DE FOCALISATION
(JA) 撮像装置及び合焦制御方法
Abstract:
(EN) The present invention provides an imaging device and a focusing control method such that even when still picture imaging is carried out continuously, focusing malfunctions can be prevented, thereby improving imaging quality. After imaging processing of an Nth frame, a digital camera carries out correlation calculations on two images that have been imaged by means of a pixel pair (P1) and determines the reliability of the correlation calculation results on the basis of the results of the correlation calculations. When the reliability is low, the digital camera carries out focusing control by means of a contrast AF scheme for each instance of imaging processing starting with the (N+1)th frame, and, when the reliability thereof is low, carries out focusing control by a phase difference AF scheme in the imaging processing of the (N+1)th frame.
(FR) La présente invention porte sur un dispositif d'imagerie et un procédé de commande de focalisation de telle sorte que même lorsqu'une imagerie d'image fixe est réalisée en continu, des dysfonctionnements de focalisation peuvent être empêchés, améliorant ainsi une qualité d'imagerie. Après le traitement d'imagerie d'une Nième trame, une caméra numérique réalise des calculs de corrélation sur deux images qui ont été imagées au moyen d'une paire (P1) de pixels et détermine la fiabilité des résultats de calcul de corrélation sur la base des résultats de calcul de corrélation. Lorsque la fiabilité est faible, la caméra numérique réalise une commande de focalisation au moyen d'un schéma de focalisation automatique (AF) à contraste pour chaque instant de traitement d'imagerie commençant avec la (N+1)ième trame, et, lorsque sa fiabilité est faible, réalise une commande de focalisation par un schéma AF à différence de phase dans le traitement d'imagerie de la (N+1)ième trame.
(JA)  本発明は、静止画撮像を連続して行う場合でも合焦不能となるのを防止して撮像品質を向上させることのできる撮像装置及び合焦制御方法を提供する。デジタルカメラは、Nコマ目の撮像処理後、画素ペアP1によって撮像された2像の相関演算を行い、相関演算の結果に基づいて相関演算結果の信頼度を判定する。デジタルカメラは、信頼度が低い場合は(N+1)コマ目以降の各撮像処理においてはコントラストAF方式による合焦制御を行い、信頼度が低い場合は(N+1)コマ目の撮像処理においては位相差AF方式による合焦制御を行う。
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)