经过比较表观亮度和已知的绝对亮度，即可得出该天体和我们的距离。
The distance to such an object can be worked out by comparing its apparent brightness with its known, absolute brightness.
这里，输入参数是应用于该效果的亮度，可以指定为绝对值，也可以是可用于像素的最大可能值的百分数。
Here, the input argument is the intensity above which to apply the effect, either specified as an absolute value, or as a percentage of the maximum possible value for the pixel.
并采用了平场域法、利用太阳辐射光谱两种方法对图像进行反射率反演，将辐亮度值反演为绝对反射率值。
Both the Flat-Field method and the method which utilize the solar radiation spectrum are used on reflectance, inversion in order to transform radiant brightness image into reflectance, image.
用一组窄带滤光片、简易辐亮度计和硅光二极管探测器设计了绝对型光谱辐亮度计。
A spectroradiometer is designed and fabricated with a set of narrow band optical filters, simplified radiometer and silicon photodiode.
这个辐亮度与卫星通道的计数值比较得到该通道绝对定标系数。
At last the apparent radiance of sensor spectral channels are compared to the digital count of satellite's output to give the calibration coefficient.
这个辐亮度与卫星通道的计数值比较得到该通道绝对定标系数。
At last the apparent radiance of sensor spectral channels are compared to the digital count of satellite's output to give the calibration coefficient.
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