Sub-pixel interpolation technique is a way that getting sub-pixel gray value by interpolation algorithm and then it is substituted into the correlation expression to calculate the sub-pixel position. It is a key way t...
详细信息
ISBN:
(纸本)9780819474049
Sub-pixel interpolation technique is a way that getting sub-pixel gray value by interpolation algorithm and then it is substituted into the correlation expression to calculate the sub-pixel position. It is a key way to improve the displacement measurement accuracy in Digital Speckle Correlation Method (DSCM), meanwhile, it is more time consuming than other steps. A new quarter sub-pixel registration method is proposed which can significantly cut down the sub-pixel searching time. On the premise of not reducing accuracy, an improved Taylor's series expansion in gradient algorithm is used to get higher registration speed. At the same time, a new cubicconvolution interpolation method is proposed to get extremely high accuracy. These conclusions are proved by the results of the experimental system.
Sub-pixel interpolation technique is a way that getting sub-pixel gray value by interpolation algorithm and then it is substituted into the correlation expression to calculate the sub-pixel *** is a key way to improve...
详细信息
Sub-pixel interpolation technique is a way that getting sub-pixel gray value by interpolation algorithm and then it is substituted into the correlation expression to calculate the sub-pixel *** is a key way to improve the displacement measurement accuracy in Digital Speckle Correlation Method(DSCM),meanwhile,it is more time consuming than other steps.A new quarter sub-pixel registration method is proposed which can significantly cut down the sub-pixel searching *** the premise of not reducing accuracy,an improved Taylor's series expansion in gradient algorithm is used to get higher registration *** the same time,a new cubicconvolution interpolation method is proposed to get extremely high *** conclusions are proved by the results of the experimental system.
暂无评论