Title :
A point correlation based subpixel image registration algorithm
Author :
Ye, Qichun ; Zhu, LiMin ; Ding, Han
Author_Institution :
Sch. of Mech. Eng., Shanghai Jiao Tong Univ., China
Abstract :
This paper presents a fast image registration algorithm with sub-pixel accuracy for IC package industry. The algorithm is based on point correlation method and improved mainly in two aspects. One is using entropy as correlation measure function and the other is proposing pair-wise exchange algorithm to obtain the pre-defined set of points. It also includes spline interpolation model that ensures the algorithm with sub-pixel accuracy. Simulation results confirm the validity of the presented algorithm.
Keywords :
correlation methods; image registration; integrated circuit manufacture; integrated circuit packaging; splines (mathematics); IC package industry; correlation measure function; entropy; pair-wise exchange algorithm; point correlation method; spline interpolation model; subpixel image registration algorithm; Brightness; Computational efficiency; Computer industry; Correlation; Entropy; Gray-scale; Image registration; Inspection; Integrated circuit packaging; Robustness;
Conference_Titel :
Intelligent Control and Automation, 2004. WCICA 2004. Fifth World Congress on
Print_ISBN :
0-7803-8273-0
DOI :
10.1109/WCICA.2004.1343074
