In my thesis on object recognition based on spatial relations and visual features, I need to convert the images to graphs to be able to work on their spatial relations. Could you introduce some methods you're familiar with along with their advantages and disadvantages? Google yielded no relevant results.
I haven't done much research yet, except for reading a few articles to get familiar with different approaches and methods and have a clear view of what I want to do. Going through this article, a method is proposed for converting an image to graph, which is called irregular pyramids. So all I want to know is whether there are other methods for such propose?