PROBLEM TO BE SOLVED: To search a proper focusing position while suppressing time to search the focusing position.SOLUTION: A focusing position adjusting device comprises: a focusing adjustment unit which changes relative position between an optical system of a camera facing a prescribed imaging target position as an imaging direction and an element from a first side of the imaging direction to a second direction of the imaging direction; an evaluation unit which calculates a monotonous increase evaluation value to standard deviation of pixel concentration included in an adjustable range whenever the focusing adjustment unit changes the relative position between the optical system and the element in which the adjustable range where an adjustment component being arranged at the imaging target position and having a pattern constituted by a plurality of colors is imaged among the images the camera images; a focusing position determination unit which determines the focusing position of the camera based on change of the evaluation value calculated by the evaluation unit.SELECTED DRAWING: Figure 1

    【課題】合焦位置の探索にかかる時間を抑えつつ、適切な合焦位置を探索する。【解決手段】合焦調整部は、撮影方向が所定の撮影目標位置に向いたカメラの光学系と素子との相対位置を、撮影方向の第1側から撮影方向の第2側へ向けて変更する。評価部は、合焦調整部が光学系と素子との相対位置を変更するたびに、カメラが撮影する画像のうち、撮影目標位置に設けられ複数の色で構成された模様を有する調整用部材が写る範囲である調整範囲について、調整範囲に含まれる画素の濃度の標準偏差に対して単調増加する評価値を算出する。合焦位置決定部は、評価部が算出する評価値の変化に基づいて、カメラの合焦位置を決定する。【選択図】図1


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    Title :

    FOCUSING POSITION ADJUSTING DEVICE, FOCUSING POSITION ADJUSTING SYSTEM, PROGRAM, AND FOCUSING POSITION ADJUSTING METHOD


    Additional title:

    合焦位置調整装置、合焦位置調整システム、プログラム、および合焦位置調整方法


    Contributors:

    Publication date :

    2018-04-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen






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