CAJ | 학술논문

从莫尔偏折技术(MDT)测量镜片屈光度的原理出发,给出了镜片屈光度与莫尔条纹倾角的关系式.进行了实验采集,获取了MDT实测镜片屈光度的莫尔条纹图.然后,基于莫尔条纹图像的特点,采用合适的图像处理算法对实测镜片的莫尔条纹图进行了灰度均匀化、降噪、图像增强、细化等一系列的数字图像处理操作,得到了镜片测量中莫尔条纹图形的清晰轮廓线.最后,给出了不同镜片屈光度的MDT测量结果,并与焦度计的测量结果进行了比较.结果表明,莫尔偏折技术结合数字图像处理用于测量镜片的屈光度时,具有很高的测量精度.
종막이편절기술(MDT)측량경편굴광도적원리출발,급출료경편굴광도여막이조문경각적관계식.진행료실험채집,획취료MDT실측경편굴광도적막이조문도.연후,기우막이조문도상적특점,채용합괄적도상처리산법대실측경편적막이조문도진행료회도균균화、강조、도상증강、세화등일계렬적수자도상처리조작,득도료경편측량중막이조문도형적청석륜곽선.최후,급출료불동경편굴광도적MDT측량결과,병여초도계적측량결과진행료비교.결과표명,막이편절기술결합수자도상처리용우측량경편적굴광도시,구유흔고적측량정도.
From principle of the measurement of lenses'power using Moire Deflection Technology (MDT),formula of the relationship between moire fringes' tilt angle and lenses' power was presented.After a series of experimental study,moire fringes of the test lenses were obtained.Meanwhile,based on the character of moire fringes,appropriate digital image processing such as gray scale equality,image enhancement,image thinning etc.was done,and distinct skeleton lines of the moire fringes were provided.In the end,through proper data processing,measuring results of different lenses'power were given,and they were compared with the measuring results tested by focimeter.Results show that adopting proper digital image processing methods for measurement of lenses' power using moire deflection technology has high precision.