i dont think so. its only well placed ad. but i am looking forward to answers from more experienced adsense publishers.
Check carefully and google around because the image here is just too close. In fact, I've read about it before. Adsense blog should be a good start.
The rule is that you are not allowed to draw undue attention to the ads. Here is what the official Adsense blog said: http://adsense.blogspot.com/2006/12/ad-and-image-placement-policy.html Click the link and you can see an example of not OK images. The way yours is linked up , it looks not OK.