The imaging unit 500 captures an image using a lens having an effective image circle smaller than the imaging surface of an image sensor. A vignetting amount calculation unit 2212 of a detection unit 221 individually calculates, for four corners, a region size of a vignetting region generated in the captured image acquired by the imaging unit 500, for example. A determination unit 2214 detects a change in the region size calculated at the time of focus abnormality detection processing with respect to the region size calculated at the reference time, and determines that a focus abnormality is detected when the change in the region size exceeds a threshold at any of the four corners. This enables accurate detection of focus abnormality.


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    Title :

    ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION METHOD, PROGRAM, AND INFORMATION PROCESSING SYSTEM


    Additional title:

    ANOMALIEERKENNUNGSVORRICHTUNG, ANOMALIEERKENNUNGSVERFAHREN, PROGRAMM UND INFORMATIONSVERARBEITUNGSSYSTEM
    DISPOSITIF DE DÉTECTION D'ANOMALIES, PROCÉDÉ DE DÉTECTION D'ANOMALIES, PROGRAMME, ET SYSTÈME DE TRAITEMENT D'INFORMATIONS


    Contributors:

    Publication date :

    2022-09-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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







    ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION SYSTEM AND ABNORMALITY DETECTION PROGRAM

    KANDA AKIRA / SUZUKI KOICHI / KUBO DAIKI et al. | European Patent Office | 2020

    Free access