Object: to evaluate mesopic contrast threshold under 3 kinds of background and to explore the effect of adaptation time, adaptation luminance and glare on contrast threshold of humans eye.
目的评估3种背景环境下的中间视觉对比度阈值，并探讨暗适应时间、背景亮度和眩光对人眼对比度阈值的影响。
As to sea image, the variance feature of region of interest and the luminance contrast feature between target and background are used to fusion recognition.
对于海面图像，分别采用感兴趣舰船目标区域的方差值、目标和背景亮度对比度这两个特征对目标进行融合识别。
The principle for testing the image tube luminance and background is discussed. The constitution of the instrument and processing methods of test data are introduced.
论述像管亮度增益与背景测试仪的原理，介绍仪器的组成以及测试数据的处理方法。
First, after the foreground is retrieved, the luminance test is used to reduce part the object region that has higher pixel's intensity in the foreground than the corresponding background.
算法首先对提取出来的前景区域进行亮度测试，去除前景区域中像素亮度值高于对应背景区域的区域。
First, after the foreground is retrieved, the luminance test is used to reduce part the object region that has higher pixel's intensity in the foreground than the corresponding background.
算法首先对提取出来的前景区域进行亮度测试，去除前景区域中像素亮度值高于对应背景区域的区域。
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