望远系统视差自动检测技术研究  

Automatic Measurement Techniques on Parallax of Telescope

作　　者：左晓舟[1] 刘钧[1] 高明[1] 

机构地区：[1]西安工业大学光电工程学院,陕西西安710032

出　　处：《激光与光电子学进展》2010年第1期91-96,共6页Laser & Optoelectronics Progress

摘　　要：视差会严重影响望远系统的瞄准和测量精度。传统的检测方法依靠人眼主观判读,只能定性检测。采用自动调焦原理研究了一种基于数字图像处理的视差自动检测方法。建立了调焦量与视差值之间关系的数学模型,通过检测系统的调焦量来得到被测望远系统的视差值。同时设计了用于视差检测的内调焦光学系统,该光学系统具有相对孔径大、成像质量高等特点;选取合适的调焦评价函数对图像进行清晰度的判读,从而找到成像最清晰时的调焦位置,最终通过控制系统实现对视差的自动检测,检测精度优于30″。该方法具有精度高、检测速度快的特点,提高了望远系统的视差检测效率。Parallax affects the accuracy of measuring and aiming of the telescope. Traditional measurements, mainly relying on the subjective judgment of the inspector, are not very reliable. Based on automatic focusing principle, a method of parallax automatic measurement technique through digital image processing is developed. According to the relationship of focusing amount and parallax value, a mathematical model is built and the parallax value is calculated out through measuring the focusing amount. In addition, an internal focusing system is designed to detect the parallax. This system has large aperture and high image quality. During the experiment, proper focusing evaluating functions are chosen to measure the quality of the image to find out the best focusing position. Finally, through the control system the automatic measurement for parallax is realized. The accuracy is better than 30＂. This method has the advantages of high accuracy and quick inspection, and improves the efficiency of parallax measurement of the telescope.

关 键 词：光学测量 望远系统 自动检测 视差 

分 类 号：TN247[电子电信—物理电子学]