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
刘雨皓 1宋玉贵 2陈淑山3
作者信息
- 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
- 折叠
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.
Abstract
In the process of high-speed camera image acquisition,the accuracy and speed of automatic exposure con-trol will have a significant impact on the camera image quality.This paper deeply studies the mathematical relation-ship between image entropy and exposure time,and uses the ZYNQ platform to implement a fast exposure time opti-mization algorithm.The key module timing simulation experiment results and imaging experiment effects are intro-duced.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 re-al-time and environmental adaptability.
关键词
图像熵/自动曝光控制/一维搜索/FPGA+ARMKey words
image entropy/auto-exposure control/one-dimensional search/FPGA+ARM引用本文复制引用
出版年
2024
NETL
NSTL
万方数据