Based on the contrast between laser and background intensity, warning is carried out through laser target detection algorithm.
利用激光和背景强度之间的反差，通过激光目标检测算法进行告警。
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 target detection reduces the noise, enhances the image's contrast, and extrudes the target from background through making sure of tracking region and dividing target.
其目标检测通过确定跟踪区域、分割目标等步骤先减少噪声影响，使图像对比度增强，把目标从背景中突显出来。
The targets SNR(Signal Noise Ratio)and contrast are very low when the target is in the sea background in which there are sea waves and the reflexing light from the stretch welter.
海面背景下海面及连绵起伏的波浪反光使图像的信噪比和对比度都较低，而且舰船目标像素较少。
For that, this paper proposes a method that extracts the weak target from background, which includes strong noises and low contrast.
针对以上问题，文章讨论了在低对比度、强干扰的情况下，对弱目标的提取方法。
How to improve image is always a difficult problem. Generally, the target background of image has some characteristics, such as the low target-to-background contrast, great noise and so on.
如何有效地增强图像是图像分析中的一个难点，通常，图像的目标背景对比度低，噪声大。
The targets SNRand contrast are very low when the target is in the sea background in which there are sea waves and the reflexing light from the stretch welter.
海面背景下海面及连绵起伏的波浪反光使图像的信噪比和对比度都较低，而且舰船目标像素较少。
Infrared images for warship targets in sky -sea background have some characteristics, such as the low target-to-background contrast, great noise and so on.
海天背景下舰船目标红外图像的目标背景对比度低，噪声大。
The invention relates to a target source with adjustable contrast ratio. The target of the target source is arranged between target integrating sphere and background integrating sphere;
本发明涉及一种可调对比度目标源，该目标源的目标在目标积分球与背景积分球之间；
The invention relates to a target source with adjustable contrast ratio. The target of the target source is arranged between target integrating sphere and background integrating sphere;
本发明涉及一种可调对比度目标源，该目标源的目标在目标积分球与背景积分球之间；
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