18. A system comprising: a processor; a tag-to-region module comprising a plurality of instructions configured to be executed by the processor to perform operations including: identifying an image having one or more image tags, wherein at least one of the one or more image tags is associated with the image as a whole; identifying a plurality of regions of the image; and associating a particular region of the image with a particular image tag of the one or more image tags based at least in part on metrics for combinations of particular regions and image tags of the one or more image tags; and an attribute tag module comprising a plurality of instructions configured to be executed by the processor to perform operations including: determining one or more attribute tags describing at least one of the content or context of the particular region associated with the image tag, the attribute tags being determined to be at least in part associated with a highest magnitude measurement of diverse density of the particular region; and associating the one or more attribute tags with the image tag to enable image searching based on the image tag and the attribute tags.
18. A system comprising: a processor; a tag-to-region module comprising a plurality of instructions configured to be executed by the processor to perform operations including: identifying an image having one or more image tags, wherein at least one of the one or more image tags is associated with the image as a whole; identifying a plurality of regions of the image; and associating a particular region of the image with a particular image tag of the one or more image tags based at least in part on metrics for combinations of particular regions and image tags of the one or more image tags; and an attribute tag module comprising a plurality of instructions configured to be executed by the processor to perform operations including: determining one or more attribute tags describing at least one of the content or context of the particular region associated with the image tag, the attribute tags being determined to be at least in part associated with a highest magnitude measurement of diverse density of the particular region; and associating the one or more attribute tags with the image tag to enable image searching based on the image tag and the attribute tags. 19. The system of claim 18 , wherein the attribute tags further include one or more of a motion tag, a view tag, or an affection tag.