25. The system of claim 20 , wherein the memory further stores instructions that, when executed by the processor, cause the processor to perform the operations of: generating a query feature vector in the objective feature space based on the query face; accessing a set of search feature vectors in the objective feature space that are associated with a set of search faces; determining distances between the query feature vector and the search feature vectors; mapping the distances into the psychological feature space; selecting one or more search feature vectors that are within a selected distance of the query vector based on the mapped distances; and designating images including the search faces associated with the selected search feature vectors as the one or more search result images.
25. The system of claim 20 , wherein the memory further stores instructions that, when executed by the processor, cause the processor to perform the operations of: generating a query feature vector in the objective feature space based on the query face; accessing a set of search feature vectors in the objective feature space that are associated with a set of search faces; determining distances between the query feature vector and the search feature vectors; mapping the distances into the psychological feature space; selecting one or more search feature vectors that are within a selected distance of the query vector based on the mapped distances; and designating images including the search faces associated with the selected search feature vectors as the one or more search result images. 26. The system of claim 25 , wherein the memory further stores instructions that, when executed by the processor, cause the processor to perform the operations of: detecting a class for the query face; accessing a collection of feature vectors in the objective feature space that are associated with a collection of faces; determining faces in the collection of faces that are the same class as the query face; and forming the set of search feature vectors by selecting the feature vectors in the collection of feature vectors that correspond to the faces in the collection of faces that are the same class as the query face.