function?[threshold]?=?adaptiveThreholding（img）;

[imgH?imgW]?=?size（img）;

iniT?=?50.0;
lvPixelMean=0.0;
hvPixelMean=0.0;


imgVector?=?reshape（img?imgH*imgW?1）;
lvPixels?=?find（imgVectorhvPixels?=?find（imgVector>=iniT）;??%%?high-value?pixels

lvPixelMean?=?mean（imgVector（lvPixels））;
hvPixelMean?=?mean（imgVector（hvPixels））;

T?=?（lvPixelMean?+?hvPixelMean）/2;

T0?=?3;
Tdiff?=?0;
if?T>=ini