The Weld Image Acquisition and Preprocessing Based on FPGA

Abstract:

In the weld image acquisition system, real-time image processing has been a difficult design bottleneck to break through, especially for the occasion of large data processing capability and more demanding real-time requirements, in which the traditional MCU can not adapt, so using high-performance FPGA as the core of the high speed image acquisition and processing card, better meets the large amount of data in most of the image processing system and high demanding real-time requirements. At the same time, system data collection, storage and display were implemented by using Verilog, and in order to reducing the influence of edge detection noise, the combination of image enhancement and median filtering image preprocessing algorithm was used. Compared to the pre-processing algorithm of the software implementation, it has a great speed advantage, and simplifies the subsequent processing work load, improves the speed and efficiency of the entire image processing system greatly. So it proves that the system has strong ability of restraining the noise of image, and more accurate extracted edge positioning, it can be applied in the seam tracking field which need higher real-time requirements.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 1507-1513
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.1507
• Online since: September 2013
• Authors: Zhong Hu Yuan, Wen Tao Liu, Xiao Wei Han
• Keywords: Field-Programmable Gate Array (FPGA), Image Processing, Median Filtering, Verilog

References

[1] Gonzalez , digital image processing [M], Beijing: Electronic Industry Press, 2003. 36(7), 73.

[2] Jihua Wu, Altera FPGA/CPLD design(the advanced version) [M] , Beijing: People's Posts and Telecommunications Press, 2005. 325–329.

[3] Jie Zhu, Xiaojuan Zhu, Ming He, FPGA-based real-time image median filtering [J]. Computer Measurement and Control. 2007. 15 (6): 4-5.

[4] Quan Zhou, Xin Liu, design of real-time image pre-processing system based on FPGA [J] North China Institute of Aerospace Engineering, 2005, 3 (​​15): 20 – 22.

[5] Hongli Guo, An Chen, FPGA-based high-speed image acquisition / processing card [J]. Fujian computer, 2007, two.

[6] Mingjing Wei, Jun Gu, the ancient military Improved Median Filtering Based on FPGA [J]. Electronic test, 2011. 12, 12: 3-5.

[7] Jiding Duan, Shuang Du, Rong Zhong, Peng Cui, image processing system based on FPGA design and realization [J]. information technology. 2012. 09. 04-5.

[8] Zhang Daode，Pan Yurong, Hu Xinyu，Frontiers of Manufacturing Science and Measuring Technology. Part 3[J]. ICRTMME, 2011: 15-18Chongqing(CN).