thresholding techniques in matlab

Could any body enlighten me aboout about available thresholding techniques in Matlab ?

I know ostu's method is available ? What else is there ?

In addition, does anybody knows if Minimum Error Thresholding (MET):By J. Kittler and J. Illingworth is there in matlab or in file exchange ?

MET paper is found in http://goo.gl/FKeKW

[Sukuchha]

anyone ?