缺陷图像实时检测技术研究

Research on Real-time Detection of Image Defects

摘要:

在缺陷检测系统中,图像数据量庞大直接影响系统的成本和实时性。针对此问题,对缺陷图像实时检测技术进行了研究。首先,根据材料缺陷含量少的特点研究了图像压缩方法;采用图像压缩方法设计了数据封装格式,通过计算可知此封装格式最大数据压缩比可达2 560.0;利用以现场可编程门阵列(FPGA)为核心的下位机硬件和上位机软件实现了此技术;实验证明此技术能够去除冗余背景信息,实时获得缺陷图像,具有数据压缩比高,硬件成本低等特点。

Abstract:

The cost and speed of defect detection system are directly affected by the large amount of data.Aim to solve this problem,real-time detection technology of image defects was studied.Firstly,according to the materials characteristic of containing few defects,an image compression method is studied.Then,a data packaging method is designed by using the image compression method.Calculations prove that the maximum data compression ratio of this package format can be up to 2 560.0.Field programmable gate array(FPG...