How to load image such as : https://developers.google.com/showcase/ ?

[regnoult axel]

Hello,

My current project (www.mananaseguro.com), at the home page I need to load a gallery of various poster's event. So I would like to simulate the following behavior in term of "loading time": 

 - A first short load time (download gwt app..), and then the user arrive on the home page.

 - Then the user wait and can see the images loading progressively (such as  https://developers.google.com/showcase/)

In my case, the user wait a lot a the begenning (the first load time refered previously), and then arrive at the home page and can see all the images already loaded. I do not want this behavior because the user wait a lot before he can surf on the website. 

I do not know exactly how this technique is called (maybe "lazy loading image") ?

I use code splitting (easy with GWTP), but I do not know if it is related to the load of the images ?

Could you explain me how to do this ?

Thanks you,