how to recover importing personal photo on ipad

What do you mean 'recover importing personal photos on iPad' ? The HT4083 page that you posted from tells you how to copy photos/videos in the Photos app that were taken with the iPad, copied to it via the camera kit, and/or saved from email/websites to a computer e.g. you can use the windows camera wizard on a PC, and Image Capture, iPhoto or Aperture on a Mac.

If you want to copy back photos that were originally synced from a computer then you will need a third-party app on your iPad such as Simple Transfer which can copy them back via your wifi network (but as photo are 'optimised' when they are synced to an iPad, any that you then copy back to a computer may not be exactly the same as they originally were on your computer).

If you've deleted photos from your iPad and want to get them back then were they on your iPad when you last backed up ? If they were then you can try restoring your iPad to that backup