Image retrieval and perceptual similarity. - Dirk Neumann 002; Karl R. Gegenfurtner (ACM Trans. Appl. Percept., 2006)

Image retrieval using collaborative filtering and visual navigation. - Kai Uwe Barthel; Sebastian Müller 001; David Backstein; Dirk Neumann 002; Klaus Jung (SIGGRAPH Posters, 2010)