I use ImageResizer.net to create images to dimensions I need dynamically, based on one larger source image. It's done in a url-like fashion, like so: "www.siteUrl.com/ImagePath/ImageName.jpg?width=90&height=90&crop=auto&quality=90". This resizes the image to 90x90 pixels, cropping, and setting jpeg quality to 90%.
Will this url be acceptable to og:image , so that when someone likes/links to my content within Facebook it shows a thumbnail of the image inside the og:image property?