曝光值
- 网络exposure;Exposure Value;EV Exposure Value
![曝光值](../cache/1493085.jpg)
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将图像的直方图划分成不同的区域,将这些区域的图像熵经过加权计算,得到该图像的曝光值与理想曝光值之间的差。
The image histogram is divided into different regions . These weighted entropy is balance between the image exposure value and the ideal exposure value .
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摄影条件主要取决于管电压和曝光值,管电压与种子厚度有关,曝光值则依管电压、焦片距和感光材料不同而异;
The major photographic conditions are tube voltage , which relates to the thickness of seed and exposure value , which based on the tube voltage , focal distance and sensitive material .
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自动DX型设置与手动过量胶卷速度设置间的曝光值差用+和-表示。
The exposure difference between the automatic DX-coded setting and the manual override film speed setting is indicated by the " + " and " - " .
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本文介绍了以MCS-51系列单片机为核心的一种照相机性能指标的微机检测系统,它既可单独也可同时检测曝光值偏差△EV、曝光时间T和光圈数F等指标。
The paper describes a microcomputer examining system which is used to examine the property of a camera . The system can examine some parameters such as the variation of the exposure △ EV , the exposure time T and the aperture F.
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这个系统仅测定中心点曝光值(微棱镜区域内)
This system only measures the central spot ( inside the microprism area ) .
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如在自动操作状态,曝光值被锁定时,又改变了光圈,相机将调整快门速度已对应被锁定的曝光值。
If the aperture is changed while an exposure value is locked in Auto operation , the camera will adjust the shutter speed to correspond to the exposure value that is locked .
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工业x射线机曝光参数值最佳选择
The Best Choice of 4 Exposure Coefficients for Industrial X-ray Radiography
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曝光补偿值将在取景器中显示。
The exposure indicator is displayed in the viewfinder display .
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曝光补偿值也将在液晶屏幕上显示。
The exposure compensation value is displayed on the LCD panel also .
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如果您调整一个前曝光补偿值时,曝光指示灯江流在取景窗显示上。
If you are adjusting a previous exposure compensation value , the exposure indicator will remain in the viewfinder display .
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按压向上向下按钮,调准曝光补偿值。除法定补偿外,政府也会按一套特惠补偿方法,发放特惠补偿。
Press the updown buttons to set the desired exposure compensation value . Apart from statutory compensation , there is a system of ex gratia payments .
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电离室自动曝光密度补偿值的合理选择
Reasonable selection of automatic exposure density compensation of iono-chamber
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通过监测选通脉冲的传输过程,发现脉冲宽度展宽是造成曝光时间测量值比理论值小的主要原因,该研究结果可为提高相机的时间分辨率提供重要指导。
It is found that the fact of measured exposure time smaller than theoretical value is due to the broadened pulse width , by monitoring the gating pulse transferring through the micro-strip lines .
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拍摄时曝光量是锁定值,拍完照后,自动曝光锁定将取消,AEL字样将从液晶屏上消失。
The picture is taken with the locked exposure value . When the picture is taken , AE lock will be canceled and the " AEL " mark will disappear .
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由于在广角情况下,光线从不同角度射入,曝光表显示的是中间范围的曝光值。
Since the light varies throughout most wide angle scenes , take meter readings against an area that represents the mid-range of exposure in your scene .
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拍摄时,如果一直按住预景深自动曝光锁定按钮,相机就能以锁定的曝光值重复拍摄。
If the preview AE lock button is kept pressed while shooting , it is possible to shoot repeatedly with the locked exposure value .
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曝光指示灯将显示所选的曝光补偿值。闪光曝光,可用小光圈档,用一张白纸放在原稿上面或用闪光灯曝光。
The exposure indicator displays the selected exposure compensation value . This exposure is made with a small F-stop to a sheet of white paper placed over the original , or to the rays from a flash - lamp .
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当包围式曝光模式补偿或自动曝光锁定相结合时,曝光范围将分别依据所选的曝光补偿值或锁定值。
When the auto bracketing mode is combined with exposure compensation or AE lock , the exposure range value or the locked exposure value respectively .
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综合考虑曝光时间、光圈大小、景深等对采集图像的影响,通过计算整体清晰度,选择最佳曝光值组合;
Considering the effect of exposure time , aperture size and the depth of field to image collection synthetically , the holistic definition of image is computed to choice the best exposure combination .