Computer Science ›› 2014, Vol. 41 ›› Issue (3): 279-281.

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Fast Calculation Method of Space Transform Model

LU Xiao-jing and HUANG Xiang-sheng   

  • Online:2018-11-14 Published:2018-11-14

Abstract: A novel fast spatial transformation model calculation approach,based on Sobel operator feature point detection,was proposed.The Sobel descriptor is constructed by taking advantages of the sensitive characteristics of Sobel o-perator on edge.The features are extracted and matched.Then the wrong matching points are eliminated by PROSAC algorithm,and the spatial transformation model between two images is calculated.The experimental results demonstrate that the simple structure Sobel descriptor can extract the feature points with high speed and match the feature points between two images exactly,thus improve the calculation speed,provide a method for augmented reality and image mosaic etc.

Key words: Sobel operator,Descriptor,Feature point,Feature point matching,PROSAC,Aaugmented reality,Image mosaic

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