Therefore, a level of 70 per cent of initial light level could be considered a threshold of useful life for general lighting.
因此，初始亮度的70%可以被当做普通照明有用时间的一个门槛。
Performance test of low light level (LLL) CCD TV system is an important part in LLL imaging.
微光CCD电视系统性能测试是微光成象技术的重要组成部分。
The image-dissector scanner is another heavily used and very successful low light level detector.
析象管扫描器是另一种常用而且很成功的微光探测器。
The image - dissector scanner is another heavily used and very successful low light level detector.
析象管扫描器是另一种常用而且很成功的微光探测器。
In this paper, we aim at the low light level television aiming system equipped on some type of armed helicopter.
文中主要研究对象是某型武装直升机加装的微光电视瞄准系统。
An underwater low light level imaging system for underwater Anti-terror is introduced and some key techniques are discussed.
介绍了用于水下反恐的水下微光成像系统，并对设计的关键技术进行了论述。
In low light level television system, this method can be used directly and the quality of the image can be improved greatly.
该方法可直接应用于微光电视系统，能够显著地提高微光图像质量。
A novel real time adaptive image accumulating technique for low light level (LLL) image enhancement is advanced in this paper.
本文研究了基于灰度变换的自适应实时图像帧积分技术及其在微光电视系统中的应用。
The testing content and procedure on detection range with a certain new model low light level observation device are described.
叙述国产某新型微光观察仪探测距离的测试内容和方法，并得出具有一定参考价值的结论。
Reggie: you could lower the light level around the aquarium and you could also get some fish which feed on algae. That would probably do it.
雷济：你可以把鱼缸周围的光线弄暗一点，还可以买些吃水藻的鱼，那应该就可奏效。
In a low light level wavefront sensor with image intensifier, the random noise of CCD output image is inhibited by delay correlation algorithm.
在带像增强器的微光波前传感器中，采用延时相关算法抑制CCD输出图像的随机噪声。
The design has used in the remote EMCCD imaging system, which can be applied in the low light level imaging area and radiation diagnosis field.
设计方法成功应用于远程EMCCD图像采集系统中，并使系统能够在微光成像及辐射场诊断中应用。
The control characteristics of low light level 61 element adaptive optical system are analyzed based on an one order proportional integral controller.
基于一阶比例-积分控制器分析了弱光61单元自适应光学系统的控制特性。
By this technique, an obvious improvement can be achieved for the detection capability of low light level imaging device and infrared thermal imaging device.
使用该技术，可显著提高微光成象和红外热成象装置探测目标的能力。
This thesis puts emphasis on study on principle and technology of two colour false colour low light level TV system, pursuing the related techniques of realizing.
该文对双谱假彩色微光电视系统的原理进行论述，探讨了实现双谱假彩色微光电视系统的有关技术。
The present paper shows that the overall performance of low light level image intensifiers should be evaluated by the "figure of merit", rather than by the concept of "generation".
文中阐述了微光像增强器总体性能应以品质因数而不是代的概念进行评价。
This paper strengthens some function of original low-light stress system, based upon the analyse and study of the original equipment of reliability test of the low-light level sight.
本文在对原可靠性试验系统分析研究的基础上，对微光应力系统进行功能完善。
A modulating fusion algorithm based on wavelet transform is advanced. The low light level image and infrared image are fused using contrast modulating and gray level modulating method.
提出了一种基于小波变换的微光图像与红外图像的调制融合算法，用对比度调制与灰度调制方法分别对微光图像与红外图像进行了融合处理。
The first and second detected light levels are processed to derive a first value representing the ambient light level and a second value representing the illumination source output level.
对于第一和第二检测出的光照水平进行处理，得出表示环境光照水平的第一值和表示照明源输出水平的第二值。
The characteristics of low light level (LLL) image were analyzed in aspects of imaging process gray level distribution and correlativity of picture element in space and time of LLL image.
从微光图像的成像过程、灰度分布和像素空间与时间相关性等几个方面对微光图像特征作较系统的分析。
A digital camera includes a photoflash lamp, an ambient light sensor generating a signal representative of an ambient light level proximate the digital camera, and a photoflash controller.
本实用新型公开了一种数码相机，该数码相机包括一个闪光灯，一个发出表示接近数码相机环境光亮度的信号的环境光传感器，和一个闪光灯控制器。
A novel image enhancement technique suitable for low light level image, dualistic sub image enhancement based on two dimensional histogram analysis and histogram equalization, is presented.
提出了基于二维直方图分析的二元子图微光图像增强处理算法。
Low light level TV is usually operated under extremely low illuminance or other adverse circumstances and the output SNR decreased to such a level that possibility of detection is greatly reduced.
微光电视工作于极低照度或恶劣环境下，输出信噪比明显降低，目标完全淹没在背景噪声中，使探测率大大下降。
The order of the pollution for serious level to light level in the seven key river systems in 2001 is: Hai river, Liao river, Huai river, Huang river, Song Hua river, Yangtze river and Pearl river.
2001年度七大水系污染由重到轻的顺序依次是：海河、辽河、淮河、黄河、松花江、长江和珠江。
A precise method to adaptively adjust the exposure time of CCD has been proposed and demonstrated based on the design of the driving circuit system and timing of ICX659ALA, a Low Light Level CCD.
在设计微光CCD ICX659ALA的驱动电路和驱动时序的基础上，提出了一种自适应精确调节曝光时间的方法。
Suitable for low-light-level detection applications, the photomultiplier tube (PMT) provides extremely high sensitivity and ultra-fast response.
适合微光探测应用，光电倍增管（PMT）提供极高的灵敏度和超快速响应。
Suitable for low-light-level detection applications, the photomultiplier tube (PMT) provides extremely high sensitivity and ultra-fast response.
适合微光探测应用，光电倍增管（PMT）提供极高的灵敏度和超快速响应。
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