To solvethe problemofloweri mage segmentationefficiencysegmentationefficiencyof thetraditional level set method,a newlevel set method for fast segmentation based on a single parameter is presented.The proposed methodi mprovesthe Chan-Vese(C-V) PDE model byaddinga penalizedenergy termandreplacingthe Dirac function withthe normof level set function gradient .The new model has the better globe opti mizationand needs not re-initialization.Besides,inthe model ,onlya parameter of the lengthtermis reservedandanevo...