动物主要借助网膜中的两类光感细胞获得视觉：视杆细胞帮助感知亮度，而种类众多的视锥细胞则帮助辨别颜色。
Retinas use two main types of light-sensitive cells to allow animals to see: Rod cells help measure brightness, while various types of cone cells help distinguish colors.
大气状况和观察者的视觉灵敏度也会降低边缘亮度。
Atmospheric conditions and the visual acuity of the observer will often reduce limiting magnitude.
研究道路照明应以更加符合人眼视觉特性的亮度指标和可见度指标对道路照明质量进行评价。
The research on the appraisal to the road lighting quality should use luminance standard and small target visibility level which are more conform to the human eye visual characteristic.
本文算法利用亮度DCTDC值、宏块类型和运动向量来确定MPEG压缩视频中运动活动和视觉内容变化。
The proposed method determines the motion activity and visual content change of the MPEG compressed video by using the luminance DCT DC value, macroblock type and motion vector.
人类视觉系统把到达人眼的光学信号分离为亮度和色度信息，并对它们做不同的处理，这是人类视觉系统的一个重要性质。
In Human Vision System, the optical signal is separated to brightness and chroma information, and they are processing differently. It is an important quality of Human Vision System.
多种颜色和不同亮度的显示按钮的说明是否是视觉信息的速度，注意长度，间距，及其他任何您想看到！
Multiple colours and brightnesses across different buttons display visual information about whether the note is on, the velocity, note length, pitch, and whatever else you want to see!
但是通常影响数字图像的视觉效果，除了噪声以外，还存在其它的因素，如图像对比度、图像亮度、图像清晰度等等。
But besides noises, there are some other interference factors which weaken the vision effect of digital image greatly, like image contrast, image brightness and image sharpness, etc.
道路照明中的亮度水平应属中间视觉范畴。
Brightness level of the road lighting should be of the mesopic vision category.
公路隧道进出口亮度的急剧变化会造成驾驶员视觉适应困难，严重时甚至导致交通事故。
The sharp variation of luminance at the entrance and exit of highway tunnel will cause the difficulty in visual adaptation of the driver, and even lead to traffic accidents.
目的评估3种背景环境下的中间视觉对比度阈值，并探讨暗适应时间、背景亮度和眩光对人眼对比度阈值的影响。
Object: to evaluate mesopic contrast threshold under 3 kinds of background and to explore the effect of adaptation time, adaptation luminance and glare on contrast threshold of humans eye.
本研究探讨在飞行仪表板中飞机的呈现亮度对视觉搜寻表现的影响。
This study investigated visual search of target aircraft on a Cockpit Display of Traffic Information.
VDT的亮度对比度和屏面亮度在对操作者视觉功能的影响中，存在着交互作用。
There are interactions in the effects of VDT luminance contrast and screen luminance on operator's visual performance.
插值过程中利用了人眼的视觉特性，能够更精确地得到图像的亮度信息和边缘信息。
Based on the characteristics of human visual system in the interpolation process, the more accurate brightness information and edge information of the image can be obtained.
分析人类视觉系统的亮度和对比度特性，提出了一种DCT域自适应可见水印算法。
By analyzing the characteristics of the brightness and contrast characteristic of the human visual system, an adaptive visible watermarking algorithm based on DCT was proposed in this paper.
通过使用计算机来表示视觉系统如下物性的有关技术：照明度、亮度、对比度、临时合成的闪烁；
The technologies by using computer to represent properties of the visual system which include illumination, brightness, and contrast ; temporal integration and flicker ;
提出了一种简单的修正方法，实践表明通过这种简单的图像处理方法，可提高三维重建模型的亮度连续性和视觉质量。
A simple correct method of the image is given. The practice proves that the method can efficiently advanced brightness-continuity and visual quality of 3d reconstruction model.
在下图中，两颗星的亮度压倒一切并产生视觉放大效果，虽然它们事实上只是两个小光点。
In the above picture, the brightness of the stars overwhelm the photograph causing an illusion of great size, even though the stars are really just small points of light.
一切视觉表象都是由色彩和亮度产生的，那界定形状的轮廓线，是眼睛区分几个在亮度和色彩方面都绝然不同的区域时推导出来的。
The whole presentation of vision is from different colour and bright degree. The outline line which can define shape is deduced by eye distinguishing some areas in different bright degree and colour.
一切视觉表象都是由色彩和亮度产生的，那界定形状的轮廓线，是眼睛区分几个在亮度和色彩方面都绝然不同的区域时推导出来的。
The whole presentation of vision is from different colour and bright degree. The outline line which can define shape is deduced by eye distinguishing some areas in different bright degree and colour.
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