Image Recognition of a decorated cookie

Leveraging OpenCV libraries and C++, match a picture to a set of less than 20. The following are the ranked order of characteristics: 1. Shape. In most cases, the comparison will be against less 6 shapes. But it could be larger. The Sun example is of this. 2. Background color - Green Cup Cake is example of this 3. Decoration color/design - the baseballs are an example of this, shape and background the same, decorations different and different color. The sample is of the undecorated circle, which could be a match to either. Return both possibilities. Technically, the response contains 0..n file names in a string list separated by "," or comma See sample files. I have larger Photoshop versions from which I can generate larger files if necessary for the comparisons. The single file being matched is likely to come from webcam, so we will need to do a test with perhaps lower quality pictures then these that where taken by an iPhone X. Andy