The invention discloses an obstacle early warning method, which comprises the following steps of: providing a photographic device with a first objective lens system and a second objective lens system, the first objective lens system has a small depth of field fL, the second objective lens system has a large depth of field fS, a large aperture image is formed under the first objective lens system, and an aperture image is formed under the second objective lens system; a large-aperture image of the obstacle in a small depth-of-field fL range is clear; the small aperture image of the obstacle is clear in the large depth-of-field fS range; the large-aperture image and the small-aperture image of the obstacle are blurred except the above conditions; comparing the contrast ratios of the small-aperture image and the large-aperture image which are acquired at the same time, and forming a digital signal '0' or '1'; and a safety indication or an early warning indication or an emergency indication is given out for the change of the digital signals for two consecutive times. Whether the obstacle is out of the safe distance can be prompted by comparing the contrast of the large-aperture image and the contrast of the small-aperture image, and the method is high in practicability and suitable for wide popularization and application.

    本发明公开一种障碍物预警方法其包括如下步骤,提供具有第一物镜系统及第二物镜系统的摄影装置,第一物镜系统具有小景深fL,第二物镜系统具有大景深fS,在第一物镜系统下形成大光圈图像,在第二物镜系统下形成的光圈图像;障碍物于小景深fL范围内大光圈图像呈清晰状;障碍物于大景深fS范围内小光圈图像呈清晰状;障碍物除上述情况之外大光圈图像及小光圈图像均呈模糊状;对同时获取的小光圈图像和大光圈图像的对比度进行对比并形成数字信号“0”或“1”;对连续两次数字信号的变化发出安全指示或预警指示或紧急指示。本发明仅通过大光圈图像和小光圈图像的对比度的比对即可提示出障碍物是否在安全距离外的提示,实用性强,适于广泛推广使用。


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    Titel :

    Obstacle early warning method


    Weitere Titelangaben:

    障碍物预警方法


    Beteiligte:
    FAN JILIANG (Autor:in)

    Erscheinungsdatum :

    18.04.2023


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G06V



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