Improved Global Motion Estimation Based on Iterative Least-Squares with Adaptive Variable Block Size

Leiqi ZHU  Dongkai YANG  Qishan ZHANG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E94-A   No.1   pp.448-451
Publication Date: 2011/01/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E94.A.448
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Image
global motion estimation,  iterative least squares,  adaptive variable block size,  preprocessing,  

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In order to reduce the convergence time in an iterative procedure, some gradient based preliminary processes are employed to eliminate outliers. The adaptive variable block size is also introduced to balance the accuracy and computational complexity. Moreover, the use of Canberra distance instead of Euclidean distance illustrates higher performance in measuring motion similarity.