Q: I lost my pictures from my iPad ,please help me to get it back.

You can restore from your iTune or iCloud backup if you have one.

Do you backup your iPad to iTunes before or iCloud? If so, you can easily extract photos from your old backup in iTunes or iCloud, but if you didn't backup them,  you can also directly recover lost photos from iPad without backup,

You can read this article: How to restore deleted photos/pictures from iPhone/ipad without backup

i backed them up in itunes, but don't know how to get to them

Connect your iPad to your computer via USB and open iTunes.  When your device is recognized on the left side of the iTunes screen, click it once to open it in iTunes.  Then click the Photo tab on the right side of iTunes, find the location on your computer where the pictures/files are, check them, then choose apply from the lower right hand side of the iTunes screen, then sync.  They'll be back on your iPad.

It's not complecated in your case. Delete accidentally without backup, why don't you try a free software first? I suggest use some tool to retrieve the lost ipad photo. And it's very ease to use. Download one and have a try. Click to next stop and let the software help you handle the rest. Remember to backup next time.