摘要
机车过往铁路道口时的震动会导致监控视频图像序列的抖动。为了改善图像质量,获得稳定的监控视频,提出了一种基于灰度投影的道口视频电子稳像方法,该方法利用图像的灰度变化特点,通过灰度映射、投影滤波和运动矢量提取估计出视频帧间运动偏移量,进而进行运动偏移量补偿,实现道口视频图像序列的稳像。仿真实验表明,该方法能够有效实现铁路道口的视频稳像。
The tremble of railway will lead to the jitter on surveillance video sequences when the train across railway crossings. An electronic image stabilization method based on gray projection is proposed to improve the quality of the image and to get stable surveillance video sequence. This method uses the gray changing characteristic of image and though gray mapping, projection filter and motion vector＇s extraction to estimate the moving offset among the frame of video sequence, thereby it can give compensation to moving offset, and realize the stabilize of video sequence. Emulation experiments show that the method can complete surveillance video sequences of railway crossings effectively.
出处
《计算机工程与设计》
CSCD
北大核心
2009年第2期443-445,共3页
Computer Engineering and Design
基金
甘肃省自然科学基金项目(0710RJ2A046)
关键词
视频监控
电子稳像
灰度投影
运动估计
运动补偿
video surveillance
electronic image stabilization
gray projection
motion estimation
motion compensation
