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Visual Quality Metrics Resulting from Dynamic Corneal Tear Film Topography

机译:动态角膜泪膜形貌所产生的视觉质量指标

摘要

The visual quality effects from the dynamic behavior of the tear film have been determined through measurements acquired with a high resolution Twyman-Green interferometer. The base shape of the eye has been removed to isolate the aberrations induced by the tear film. The measured tear film was then combined with a typical human eye model to simulate visual performance. Fourier theory has been implemented to calculate the incoherent point spread function, the modulation transfer function, and the subjective quality factor for this system. Analysis software has been developed for ease of automation for large data sets, and outputs movies have been made that display these visual quality metrics alongside the tear film. Post processing software was written to identify and eliminate bad frames. As a whole, this software creates the potential for increased intuition about the connection between blinks, tear film dynamics and visual quality.
机译:通过高分辨率Twyman-Green干涉仪获得的测量值已经确定了泪膜动态行为对视觉质量的影响。去除了眼睛的基本形状,以隔离泪膜引起的像差。然后将测得的泪膜与典型的人眼模型组合以模拟视觉效果。已经实施了傅里叶理论来计算该系统的非相干点扩展函数,调制传递函数和主观品质因数。已经开发了分析软件,以简化大型数据集的自动化操作,并制作了输出影片,这些影片在泪膜旁边显示这些视觉质量指标。编写了后处理软件以识别和消除不良帧。总体而言,该软件为眨眼,泪膜动态和视觉质量之间的联系增加了直观感。

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    Solem Cameron Cole;

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