基于色彩校正与分层块匹配的图像配准算法  

Image registration algorithm based on color alignment and hierarchical block matching

作　　者：李晓宾[1] 李淑珍[2] 张晓[3] 

机构地区：[1]江西科技学院信息与网络管理中心,江西南昌330098 [2]江西科技学院管理学院,江西南昌330098 [3]西北工业大学计算机学院,陕西西安710072

出　　处：《计算机工程与设计》2016年第12期3349-3354,共6页Computer Engineering and Design

基　　金：国家自然科学基金项目(61033007);江西省高等学校教改研究基金项目(JXJG-14-24-11)

摘　　要：针对当前图像匹配算法难以兼顾匹配精度和效率,易受模糊、噪声和色彩不一致影响等问题,提出色彩校正耦合分层块匹配优化的彩色图像配准算法。计算RGB图像每个色彩通道强度的平均值和标准差,建立色彩映射方程,对色彩不一致进行补偿,完成色彩校正;基于广义高斯分布金字塔RGB强度的差分和,确定高斯金字塔层数,进行特征检测,计算特征位置;进行初始块匹配,利用变化的单位比例因子对计算成本优化,利用抛物线拟合技术处理金字塔的每个通道,寻找其亚像素精度的最优匹配。仿真结果表明,该算法能够提高计算效率和精度,在色彩不一致、模糊和噪声图像上取得了良好配准结果,具有较强抗干扰能力与较高的鲁棒性。The current image matching algorithm is difficult to give attention to matching accuracy and efficiency,and it is easy to be influenced by the image blur,noise and color.To solve the problem,the color image registration algorithm based on color registration coupled layer block matching was proposed.The average value and standard deviation of each color channel intensity were calculated.The color mapping equation was built by means of draw value and standard deviation,color mapping equation was established,so the color correction was completed.The color correction was performed.Based on the generalized Gauss distribution of pyramid RGB,the feature positions were determined.The initial block matching was performed.The change unit scale factor was used to process calculation cost,parabolic fitting technology was used to process each channel of pyramid,and the optimal matching of the sub pixel accuracy was calculated using the variation of RGB.Simulation results show that the proposed algorithm can improve the efficiency and accuracy of image registration,and it has strong anti-interference ability and robust performance.

关 键 词：图像配准 分层块匹配 高斯金字塔 色彩校正 色彩映射方程 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]