PROBLEM TO BE SOLVED: To accurately detect abnormality in an on-vehicle camera lens by using captured images obtained from plural on-vehicle cameras, even when a vehicle travels on a road without a road division lines.SOLUTION: A lens abnormality detection device comprises: plural on-vehicle cameras 4f, 4r for imaging the surrounding of the vehicle; a viewpoint conversion unit 22 which generates a bird's-eye view image by viewpoint conversion of each captured image obtained by each on-vehicle camera; a storage unit 16 which successively stores, as history images, front bird's-eye view images positioned in front of the vehicle in a travel direction; and an abnormality determination unit 26 which compares rear bird's-eye view images positioned in rear of the vehicle in the travel direction with the history images stored in the storage unit and when the differences between the respective images are not smaller than an abnormality determination value, determines the occurrence of lens abnormality in one of the on-vehicle camera.SELECTED DRAWING: Figure 1

    【課題】車両が道路区画線のない道路を走行しているときにでも、複数の車載カメラから得られる撮像画像を使って、車載カメラのレンズ異常を精度よく検出できるようにする。【解決手段】レンズ異常検出装置は、車両周囲を撮像するための複数の車載カメラ4f、4rと、各車載カメラによる撮像画像をそれぞれ視点変換することで鳥瞰画像を生成する視点変換部22と、車両の走行方向前方に位置する前方鳥瞰画像を履歴画像として順次記憶する記憶部16と、車両の走行方向後方に位置する後方鳥瞰画像と記憶部に記憶された履歴画像とを比較し、各画像の差分が異常判定値以上であるとき、複数の車載カメラの一つにレンズ異常が生じていると判定する異常判定部26とを備える。【選択図】図1


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    Title :

    ON-VEHICLE CAMERA LENS ABNORMALITY DETECTION DEVICE


    Additional title:

    車載カメラのレンズ異常検出装置


    Contributors:

    Publication date :

    2017-07-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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