基于ZYNQ的相机曝光时间快速优化算法  

Fast Optimization Algorithm for Camera Exposure Time Based on ZYNQ

作　　者：刘雨皓 宋玉贵[2] 陈淑山 LIU Yuhao;SONG Yugui;CHEN Shushan(School of Weapon Science and Technology,Xi’an Technological University,Xi’an 710021,China;School of Opto-electronical Engineering,Xi’an Technological University,Xi’an 710021,China;Heilongjiang North Tool Co.,Ltd.,Mudanjiang 157000,China)

机构地区：[1]西安工业大学兵器科学与技术学院,西安710021 [2]西安工业大学光电工程学院,西安710021 [3]黑龙江北方工具有限公司,牡丹江157000

出　　处：《自动化与仪表》2024年第7期42-46,56,共6页Automation & Instrumentation

摘　　要：在高速相机采集图像的过程中,自动曝光控制的精度与速度会对相机成像质量产生重大影响。该文深入研究了图像熵与曝光时间的数学关系,应用ZYNQ平台实现了一种曝光时间快速优化算法。介绍了关键模块时序仿真实验结果和成像实验效果。实验结果表明,该方法在顺光、逆光和侧光条件下均可在11帧内收敛至合适的曝光时间。满足检测设备对实时性和环境适应性的要求。In the process of high-speed camera image acquisition,the accuracy and speed of automatic exposure control will have a significant impact on the camera image quality.This paper deeply studies the mathematical relationship between image entropy and exposure time,and uses the ZYNQ platform to implement a fast exposure time optimization algorithm.The key module timing simulation experiment results and imaging experiment effects are introduced.The experimental results show that this method can converge to a suitable exposure time within 11 frames under the conditions of front light,back light and side light.It meets the requirements of detection equipment for real-time and environmental adaptability.

关 键 词：图像熵 自动曝光控制 一维搜索 FPGA+ARM 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]