便携式图像采集系统设计

Design of Portable Image Acquisition System

为了实现在浓烟、浑浊水体等低可见度复杂环境中的图像采集,分别从硬件和软件两个方面设计了一种基于OV7670CMOS图像感光芯片的便携式图像采集系统。首先,硬件上系统在Cortex-M3内核STM32控制下实时采集图像,利用ILI9320驱动芯片实时输出图像并显示在TFT-LCD显示屏,最快速率达到15fps。其次,在软件方面通过配置OV7670的寄存器实现了RGB565格式的图像数据输出,采用顺序程序流程最大化降低了程序运行时间,加快了数据显示的速度。最后,通过浑浊水体、浓烟等环境下的实测试验,证实了本系统的有效性。

In order to achieve the image acquisition at dense smoke and cloudy water environment, the portable image acquisition system from hardware and software is designed based on OV7670 CMOS. Firstly, real-time image is obtained under the control of STM32 in Cortex-M3, then the real-time image is also output by ILI9320 and displayed by TFT-LCD, the fast velocity can reach to 15fps. Secondly, the image data at format RGB565 is output based on OV7670 register, so the most of run time has reduced according to sequential program flow. Finally, the test at dense smoke and cloudy water environment is confirmed the effectiveness of the system.