液晶与显示2012，Vol.27Issue(2)：263-266,4.DOI:10.3788/YJYXS20122702.0263
基于仿射变换的快速全局运动估计算法
Fast Global Motion Estimation Algorithm Based on Affine Transformation
摘要
Abstract
Global Motion Estimation is an important tool widely used in computer vision, video processing, and other fields. To reduce the computational complexity of global motion estimation, a global motion estimation method based on the pixel gradient strategy was proposed. With regard to global motion models, six-parameter affine model is adopted because of its reasonable tradeoff between complexity and accuracy. In order to accelerate the algorithm, two-level pyramid is utilized in the calculation. It uses those gradient bigger pixels in the calculation of every pyramid level, and combines Gauss-Newton algorithm. The extensive experiments show that the proposed method is efficient and robust in terms of both computational complexity and accuracy.关键词
全局运动估计/参数模型/仿射变换/迭代最小二乘法/金字塔计算Key words
global motion estimation/ parameter model/ affine transformation/ iterative least squares method/pyramid calculation分类
信息技术与安全科学引用本文复制引用
王思珺,赵建,韩希珍..基于仿射变换的快速全局运动估计算法[J].液晶与显示,2012,27(2):263-266,4.基金项目
吉林省科技厅重点项目(No.20100310) （No.20100310）
