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。

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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。

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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。

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