According to special requirements of low illumination and concealing in monitoring field,this paper develops a color (grayscale) integrated night vision system based on infrared thermal imaging technology and glimmer night-vision technology.System structure is firstly described,and basic operation principle for photoelectric part is then analyzed.A real-time embedded color/grayscale separation and integration strategy is adopted to efficiently improve video transmission efficiency and S/N ratio.Narrow-band pass filter is used to avoid signal distortion.Afterwards,a wavelet-based night vision image enhancement algorithm is performed to increase video's visual effect.Experimental results show that this system's performance surpasses a mainstream brand in terms of visual quality and objective values,and thus is at advanced levels in the field of video cameras both at home and abroad.%根据监视监控领域对低照度和隐蔽性的特殊要求,在热红外成像技术和微光夜视技术的基础上,研制开发了一种彩色(黑白)一体化的夜视摄像设备.首先描述系统的组成和结构,并分析光电部分的基本工作原理.提出的实时嵌入式彩色/灰度分离合成技术有效提高了视频图像的传输效率和信噪比.采取的窄带通光学滤波技术避免了信号的失真以及乱码等现象.基于小波变换的夜间图像增强算法极大提高了视频的可观测性.实验结果表明,该系统在主观视觉质量和客观评价指标2方面的表现均超越了某主流品牌,在国内外摄像技术领域处于领先水平.
展开▼
