The research on characteristic of the all-sky background brightness on day is developed. The sky background brightness is measured, the measurement data is analyzed.
开展了白天全天空背景亮度特性研究。进行天空背景全天候测量，开展了测量数据的分析与处理；
The best signal depends not only on its brightness but also on how well it contrasts with the background against which it must be seen.
最好的信号不仅取决于它的亮度，还取决于它与背景的对比度。
Objects and background should vary in brightness or saturation, in addition to hue, and color text on color backgrounds should also be avoided when possible.
图形和背景除了色调不同外，饱和度和亮度也应有区别。如果可能，应尽量避免在彩色背景上运用彩色文本。
We are applying the layers to make the background fit our scene elements. We are also correcting the color and brightness.
我们将该图层加入背景中，使得背景与我们的场景更加匹配。同时我们也需要调整颜色和亮度。
LBS-1 fire accuracy measurement system was set up. Influence factors including detection circuit of photo-electricity transforming and accepting, and brightness of sky background, were analyzed.
建立了LBS- 1型立靶精度测量系统中的天幕靶，对天幕靶探测性能存在的各种影响因素，如：光电转换接收器件及其探测电路、天空背景亮度的强弱等进行了分析。
In this case, a method based on two -dimension second - order polynomial is proposed to fit and remove the brightness value of background.
针对这种情况，提出了基于二维二阶多项式拟合并去除不均匀背景的方法。
The ring sight presents a set of concentric rings when it is illuminated by the target and the background. Brightness of the rings is in proportion to that of the target and the background.
在目标光和背景光的照射下，呈现出一组同心圆环，其亮度与目标和背景的亮度成正比。
The ring sight presents a set of concentric rings when it is illuminated by the target and the background. Brightness of the rings is in proportion to that of the target and the background.
在目标光和背景光的照射下，呈现出一组同心圆环，其亮度与目标和背景的亮度成正比。
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