Command not working im2unit8

Hi I MATLAB (R2010b) I use. In the Image Processing Toolbox (im2unit8) is a program that I need it but this command does not work and gives error. If that does not make such an order. Where is the problem? Please help me. Thank you (Note that for my friends not working)

[Andreas Goser]

You could help other to help you, by providing the error message... Typically they mean something!

Answer 1

[Andreas Goser]

Theory 1: You mistyped it - like you also did in the qeuestion

Theory 2: It is not on the path, try

which im2uint8

Theory 3: It is not licensed, try

license('test', 'image_toolbox')