Image acquisition method and device for underwater automatic light supplement

The invention discloses an image acquisition method and device for underwater automatic light supplement. The method comprises the following steps: acquiring image data; generating an image global brightness value according to the image data; comparing the global brightness value of the image with a preset brightness value to obtain a comparison result; and executing a light supplementing operation according to the comparison result. The technical problem that in the prior art, the underwater light condition cannot be automatically judged for automatic light supplementing is solved. 本发明公开了一种一种水下自动补光的图像采集方法及装置。其中，该方法包括：获取图像数据；根据所述图像数据，生成图像全局亮度值；将所述图像全局亮度值与预设亮度值进行比较，得到比较结果；根据所述比较结果，执行补光操作。本发明解决了现有技术中无法自动判断水下光线情况进行自动补光的技术问题。