[WM]: How to decomposite an image using Mexican-hat wavelet in matlab?

["wangjing" <wang_jing8888@126.com>]

Hello Watermarkers,
  I want to use Mexican-hat wavelet to decomposite an image in matlab,but I don't know which function can be used in matlab to do
this?I attempt to use "waverec2",but I found Mexican-hat wavelet is a special wavelet,it can't be used in "waverec2".
  In severial paper,people extract feature-point using Mexican-hat wavelet ,I want to know how they do this?
  thanks! 
  


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