How is the simplest way to make this apps?

I wanna create a apps like the following:

it let users try specs online

I intended to use Gallery2 or Gallery3( to handle the member management and storage of user face photo, while develop a customh modules to meet the requirement

I think this is an efficient way to achieve this

however, for the custom modules, should it be written in javascript, flash or others?

Thank you very much!

I would be VERY careful, their website states that the process they use is patented, as such if you were to replicate what they produce it could very well constitute a patent violation (intellectual property law) and you could risk yourself being sued. Have you considered the risks with exactly what you’re trying to achieve?