A system and method are provided for determining a dynamic relation tree based on images in an image collection. An example system includes a memory for storing computer executable instructions, and a processing unit for accessing the memory and executing the computer executable instructions. The computer executable instructions include an event classifier to classify main characters of images in an image collection as to an event identification based on events in which the main characters appear, wherein each main character is characterized as to at least one attribute; a relation determination engine to determine relation circles of the main characters; and a construction engine to construct a dynamic relation tree representative of relations among the main characters, where the dynamic relation tree provides representations of the positions of the main characters in the relation circles, and where views of the dynamic relation tree change when different time periods are specified.