摘要
为了减少计算量,进行实时稳像,提出了一种基于单向投影矢量进行运动估计的数字稳像方法.把匹配块像素灰度值向水平或垂直方向投影,形成一个原始矢量;对参考图像的搜索区进行投影,形成多个同样维数的矢量,构建一个参考矢量矩阵;比较原始矢量与参考矢量矩阵中的每个矢量之间的差分,找到最佳匹配点.在构建矢量时,绑定像素的位置信息,以降低误匹配,并运用快速搜索法找到矢量间的最小绝对差分.对该算法的运算量进行优化,在PC机上实现了实时稳像.
In order to reduce computer burden and to realize realtime digital electronic image stabilization, a fast and robust image stabilization technique is presented to eliminate the nuwanted video motion during watching time. A vector is projected from matching block image and used as the template vector, then vectors from the reference image are projected to construct a reference vector matrix. The template vector is compared with each vector in the matrix and the minimum differences found out between them. The position is the replacement framewise. The relative position of pixles is combined into vector units to make it robust and searching strategies introduced into the algorithm to decrease the time of computation, thus allowing the implementation of realtime video stabilization on normally availables PCs.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2003年第4期509-512,共4页
Transactions of Beijing Institute of Technology
基金
国家部委基金资助项目(03001070302)
关键词
投影矢量
图像稳定
运动矢量
运动估计
图像处理
projection vector
image stabilization
motion vector
motion estimation
image processing
