16. The computer-readable storage media of claim 15 , wherein the at least one image includes the shape feature associated with the at least one shape topic and the textual descriptor.
16. The computer-readable storage media of claim 15 , wherein the at least one image includes the shape feature associated with the at least one shape topic and the textual descriptor. 17. The computer-readable storage media of claim 16 , wherein the at least one image is received from an image-based search engine as a result of a search performed by the image-based search engine using the sketch as a query.