Case: Image search with SafeSearch set at "Moderate" returns no picture

Case: Google Image search with SafeSearch set at “Moderate” returns no picture for my site.

http://www.roohalahgar.com

While Yahoo images is okay.

if i set the SafeSearch off i get the result.

why is that.

Note: I was looking for that answer everywhere since it is very annoying issue.
i found these links but i did not find any useful things for me.

http://www.google.com/support/forum/p/Webmasters/thread?tid=65a31945a70e73b8&hl=en

http://www.google.com/support/forum/p/Web+Search/thread?tid=4cb7604fca0d6592&hl=en

Anyone can help?

As answered by Google employee Susan Moskwa:

Currently the only way to resolve a case like this (when images are getting filtered by SafeSearch and it seems like they shouldn’t be) is to post it in this forum and we’ll pass it on to the right team.

http://www.google.com/support/forum/p/Webmasters/thread?tid=65a31945a70e73b8&hl=en

It seems that Google just didn’t get your image safe-ness quite right. It’s what happens when someone tries to write a mathematical equation to evaluate trillions of images. While Google generally does a great job, it’s unfortunate that it misunderstood your images. My advice: follow Susan’s instructions and request an evaluation.