2. The method according to claim 1 , wherein the determining recurring visual patterns based on the visual words and connections between the visual words further comprises determining a salient pattern based on a number of extracted patches contained in each visual word.
2. The method according to claim 1 , wherein the determining recurring visual patterns based on the visual words and connections between the visual words further comprises determining a salient pattern based on a number of extracted patches contained in each visual word. 3. The method according to claim 2 , wherein the determining visual patterns based on the visual words and connections between the visual words further comprises determining a concurrent pattern based on a number of connections between the visual words, wherein there is a connection between first and second visual words when the first visual word contains a first patch and the second visual word contains a second patch, and the first patch and the second patch were extracted from a same image of the plurality of second images.