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.
边缘亮度直接与孔径相关，孔径越大，就能看到越暗的星。
The limiting magnitude is directly related to aperture, where larger apertures allow you to see fainter stars.
通过望远镜(观察条件相当良好)所能看到的最暗的星的等级称作边缘亮度。
The faintest star you can see with a telescope (under excellent seeing conditions) is referred to as the limiting magnitude.
比如，孔径为8英寸的望远镜的边缘亮度是14.0 (7.5 + 5LOG 20.32 = 7.5 + (5x1.3) = 14.0)。
For example, the limiting magnitude of an 8" aperture telescope is 14.0. (7.5 + 5 LOG 20.32 = 7.5 + (5x1.3) = 14.0).
你可以锐化边缘，或者为发光的物件增加亮度等等效果。
You can sharpen edges, or pop highlights on shiny objects for effect.
对于任何放大率的望远镜，孔径越大，其成像亮度越高，成像边缘越锋利。
At any given magnification, the larger the aperture, the brighter and sharper the image will be.
在嵌入水印信息时先考虑边缘点，再考虑亮度较暗和较亮区域。
It considers edge points and dark or light area when embedding watermark information.
但但亮度变暗也可能是由食双星引起的，其从地球上看，两个星球出现在同一个轨道的边缘，因此每一次循环，每一个星球都会经过另一个的前方。
But dimming can also be caused by an eclipsing binary, a pair of stars in an orbit that appears edge on as seen from Earth so that each star passes in front of the other once per cycle.
在获得信号点亮度区域的方法中，本文重点讨论了信号点边缘检测和边缘连接的方法。
We discuss deeply the methods of edge detection and edge linkage for obtaining the target region of a signal point.
这样，滤波时就可以考虑到图像的亮度信息，在滤除图像噪声的同时尽量保持了图像的边缘。
In this way, image brightness will be taken into account and the image edge should be simultaneously maintained as possible during filtering image noise.
在消散阶段，闪电水平收缩，亮度弱减，边缘模糊。
The brightness decreased and the horizontal dimension with indistinct edge reduced during disappearing stage.
CB模型是一种把图像分为色度和亮度方面的彩色模型，对图像进行分割去噪时可以很好地保留图像的细节和边缘。
The CB model which can hold the details of the image and keep boundary well is a chromaticity and brightness color model.
它提高了图像的清晰度，较大程度保留了细节信息，具有边缘信息突出，亮度对比度高的优点。
It improves the clarity of the image and retains the details of the image in large extent, with the advantages of prominent edge information and high brightness and contrast.
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.
靠近边缘的光谱状亮点的亮度要小于靠近中心的亮点。
Those spectra nearer the periphery of the objective are dimmer than those to the central spot.
得出平缓区是由径向、切向稳区的共同作用导致的，并且在切向稳区边缘可以实现高亮度激光器的结论。
The gentle zones were thought to be due to the combined effects of the radial and tangential stability zones and high-brightness lasers can be obtained at the stable power point.
此外还观察到，在单纯亮度对比条件下，只需1.8％和5.3％的低对比度即可分别产生轮廓和边缘错觉；
The minimum contrasts for inducing contour and border illusions were only1.8% and 5.3% under LC.
应用四点积分标准评价所有弹性图像的病变可视性、相对明亮度、边缘规则性和有限性。
All elastograms were evaluated for the lesion visibility, relative brightness, and margin regularity and definition by using a four-point scale.
应用四点积分标准评价所有弹性图像的病变可视性、相对明亮度、边缘规则性和有限性。
All elastograms were evaluated for the lesion visibility, relative brightness, and margin regularity and definition by using a four-point scale.
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