基于FPGA的高速实时图像采集和自适应阈值算法

吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (02): 534-0538.

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Highspeed realtime image acquisition and autoadapted |threshold processing based on FPGA

LI Dong-mei¹,WANG Yan-jie²,WANG Chang-yu^1,CHEN Feng¹,LI De-hui³

1.Department of Information Confront, Air Force Aviation University, Changchun 130022|China；2.Image Lab of Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China;3.China Electronics Technology Group Corporation No.26 Research Institute, Chongqing 400060, China

Received:2008-06-01 Online:2010-03-01 Published:2010-03-01

Abstract

Abstract:

An autoadapted threshold algorithm for image processing is proposed, which is based on Field Programmable Gate Array (FPGA). Using this algorithm can realize highspeed realtime detection for laser spot center.3×3 window module and autoadapted threshold module are adopted in this study. First the CCD input data are processed, and the spot scope is estimated. Then the spot centroid algorithm is used to process the pixels, which are occupied by the spot, and the miss distance of the spot position is obtained. Finally, the image is displayed on the LCD using VGA format. This algorithm can reach miss distance frame rate of 3000 F/s and accuracy of 2 μrad. By this proposed method we can realize highspeed and high accurate tracking.

Key words: information processing, FPGA, Camera Link interface protocol, autoadapted threshold, image acquisition

CLC Number:

TP751

LI Dong-Mei, WANG Yan-Jie, WANG Chang-Yu, CHEN Feng, LI De-Hui. Highspeed realtime image acquisition and autoadapted |threshold processing based on FPGA[J].吉林大学学报(工学版), 2010, 40(02): 534-0538.

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