结果屏片接触越紧密，光学对比度越大。
Results: the tighter screen film contact, the higher contrast is.
在屏幕上的字体由墨水形成，与背景形成很高的光学对比度，使之便于阅读。
Letters and other characters on the screen are formed out of ink that has a high optical contrast with the background, making them easy to read.
该传感器允许延长光学动态范围，在保持不饱和明亮的场景图像领域中的阴影区域的对比度好多个斜坡设置。
The sensor allows the setting of multiple slopes for extended optical dynamic range, which maintains good contrast in shadowed regions of an image without saturating bright areas in scenes.
描述了投影显示关键参数（分辨率、对比度、投影光学、系统的光通量、彩色化、灯及屏幕）及优化方法。
The key parameters of projection display, including resolution, contrast, projection optics, optical throughput, color, light source and screen and their optimum method were described.
本文讨论了影响等厚条纹对比度的原因，指出了暗背景光学元件的优点。
The causes of interfering with the contrast of equal thickness fringes are discussed. The advantages of optical components of dark background are presented.
本文介绍了几种头盔式显示器的光学设计方案，并从提高系统的分辨率、对比度，重量等各方面作了比较。
Several optical design schemes of helmet display are introduced and compared in resolution, contrast and weihgt of system.
其中与光学特性测量有关的项目有：发光亮度、角度相关亮度均匀性、角度相关对比度、灰阶色度线性等。
Optical characteristics-related measurement projects in it include: shining luminance, angle-related luminance uniformity, angle-related contrast ratio, gray scale curve, etc.
近年来，低对比度图像中弱小目标的检测问题一直是 光学和图像处理领域的研究热点。
The detection for small dim targets in image processing field has been the subject of intense investigation for years.
近年来，低对比度图像中弱小目标的检测问题一直是 光学和图像处理领域的研究热点。
The detection for small dim targets in image processing field has been the subject of intense investigation for years.
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