中文摘要：

夜间环境下，采集的图像对比度较低，容易受到周围光照等因素的干扰，图像中含有大量的干扰噪声，没有考虑视觉表达的干扰作用。提出一种考虑视觉传达效果的夜视环境视觉定位方法，对图像进行预操作，过滤夜视环境中的噪声。基于LOG滤波获取目标的反射弱光图，采用高斯滤波器对目标图像进行平滑滤波，使用拉普拉斯滤波采集目标图像边缘信息，提高目标的辨识度，通过搜索线注入式填充方法对目标亮面区域进行填充，增强目标的亮度视觉传达效果。采用基于亮度累加直方图的目标定位方法，依据目标亮度、颜色以及形状等视觉传达特征对目标进行筛选和准确定位。实验结果表明，所提方法对夜视环境中车辆进行定位的各指标较优，可以适用于不同的环境中，应用范围广。

英文摘要：

In night environment,the collected image is easily disturbed by the factor of nearby light due to its low con?trast,contains much interference noise,and the interference effect of vision expression isn’t considered,so a vision locatingmethod considering visual communication effect in night vision environment is proposed to preprocess the image,and filter thenoise in night vision environment. In the method,the reflection weak light image is acquired based on LOG filtering,the Gaussianfilter is used for smoothing filtering of the target image,the Laplace filter is used to acquire the edge information of target imageto improve the target identification degree. The target bright surface area is filled with the search line injection filling method,which can enhance the brightness vision communication effect of the target. The target positioning method based on luminanceaccumulation histogram is adopted to screen the target and determine the accurate location of the target according to the visioncommunication characteristics of target brightness,color,shape,etc. The experimental results indicate that the proposed meth?od is superior in each index for locating the vehicles in night vision environment,is applied to different environments,and haswide application range.