[Theme: Genesis] Replacing Post Title With Image

Hi!

The images I include in posts work as “banners” and have the post title usually in them. I would like to make the image appear instead of the title, i.e. to replace it on the home page and the post page, so the “title” doesn’t repeat itself. However, I want the title still to appear in the sidebar widgets (e.g. in the recent posts section). I also don’t want to make this the rule, but to be able to decide individually in which posts the title is going to be replaced by an image.

Does anybody know how to do this? I know close to nothing about CSS etc. so any help is greatly appreciated!

Thank you so much in advance!
Karolina