摘要
图像采集是获取图像信息的主要来源,以往图像采集处理需要高速、高性能处理器完成,低端单片机很难实时采集处理图像。文章以Cortex M3架构的ARM(STM32F103VCT6)和CPLD(EPM240T100)作为核心,加上OV5640自动对焦摄像头设计了一款数字图像采集处理系统。采用CPLD高速采集图形,以及图像预处理,这样降低了后面处理器标准,使得低端单片机也能够处理数字图像。单片机与CPLD采用SPI总线传输数据,图像采集和处理同时进行,提高了系统的工作效率。图像经过数字化处理,在液晶屏上显示,也可以存储在SD卡或无线传输到计算机以及手机上。系统设计了GPS系统,自动将拍摄的地点、经纬度(GPS信息)和时间整合,作为照片和图像数字资料。通过数字图像处理,照片能够呈现特殊效果。
Image acquisition is the main source of obtaining image information. In the past, image acquisition and processing needed high-speed and high-performance processors. It is very difficult for the low end microcontroller unit （ MCU） to collect and pro-cess images in real time. In this paper, taking Cortex M3 architecture of the ARM （ STM32F103VCT6） and CPLD （ EPM240T100） as the core, plus OV5640 automatic focus camera, a digital image acquisition and processing system is designed. The use of CPLD high-speed graphics acquisition, and image preprocessing has reduced the standards of the processor behind, so that the low-end single-chip computer can also process digital images. Single chip microcomputer and CPLD adopt SPI bus to transmit data, so image acquisi-tion and processing are carried out simultaneously, which improves the efficiency of the system. The images are digitally processed and displayed on the LCD screen. They can also be stored on SD cards or transmitted wirelessly to computers and mobile phones. The system designs a GPS system, which automatically integrates the location, latitude and longitude of shooting information with time so as to be used as the digital data of photos and images. Through digital image processing, photos can present special effects.
出处
《科技创新与应用》
2018年第7期35-36,共2页
Technology Innovation and Application
基金
国家大学生创新项目(编号:201610214004)
关键词
图像采集
单片机
CPLD
image acquisition
microcontroller unit （ MCU）
CPLD
