import java.util.HashMap;

public interface PhotoLocator {
  
  /** Produces a map of foreground to background image names which results 
    * in the best matching score. If more than one matching produces the same 
    * best score, then any one of the best options may be returned.
    * @param matches a hashmap which contains the set of foreground-to-background matchings which comprise the best result.
    * @return the total score of the chosen matching.
    */
  public double getBestMatch(HashMap<String, String> matches);
}