Title :
Motion analysis of echocardiograph using optical flow method
Author :
Chunke, Yang ; Terada, Kenji ; Oe, Shunitiro
Author_Institution :
Fac. of Eng., Tokushima Univ., Japan
Abstract :
A gradient-based method is applied to analyze two echocardiograph sequence velocity field. The method assumes local spatial constancy of the optical flow and uses a weighted least-squares minimization to determine the optical flow. A hierarchical improvement to the method is proposed to solve the problems of motion blur and sensitivity to noise. Experimental results show that both the implemented method and the improvement to it are available to obtain global quality evaluation of the velocity field of the echocardiograph sequences
Keywords :
echocardiography; image sequences; medical image processing; minimisation; motion estimation; patient diagnosis; echocardiograph; gradient-based method; least-squares minimization; local spatial constancy; motion analysis; motion blur; noise sensitivity; optical flow method; sequence velocity field; Equations; Image motion analysis; Image sequences; Information science; Intelligent systems; Motion analysis; Optical computing; Optical noise; Optical sensors; Strain measurement;
Conference_Titel :
Systems, Man, and Cybernetics, 1996., IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-3280-6
DOI :
10.1109/ICSMC.1996.569875
