基于图像数据封装包文的数据采集方法

Data Acquisition Method Based on Image Data Encapsulation

摘要:

针对如何在工业应用中找到一种实现周期更短和更低成本的图像数据采集方法进行了研究;通过分析以太网帧格式和JPEG图像数据特点,给出了一种对JPEG图像帧进行分片并对分片进行数据封装的方法,在此基础之上实现了基于图像数据封装包文的数据采集设计;最后在FPGA环境中对该设计进行了实现,此实现成功应用到了工程项目当中;实践表明,基于图像数据封装包文的数据采集方法能够在不添加外置存储器等复杂器件的情况下实现稳定的、实时的JPEG图像数据采集。

Abstract:

How to find an implementation for a shorter period and lower cost of image data acquisition method in industrial applications were studied. By analyzing the Ethernet frame format and JPEG image data characteristics, given a JPEG image frames of fragmentation and the fragmentation data encapsulation method, on this basis to realize the data acquisition method based on the packet of image data encapsulation. Finally the design was implemented in the FPGA environment, and this implementation was successfully applied to the project. Practice shows that the proposed method can achieve stability and real-time JPEG image data acquisition without adding external memory devices and other complex devices.