1. A computer-implemented method for propagating image metadata: receiving one or more seed images associated with a content category; conducting a content-based image retrieval via a computing device having a processor and a memory to identify one or more search result images stored in one or more databases comprising computer-readable media and communicatively coupled to the computing device; propagating image metadata associated with the one or more seed images to the one or more search result images; identifying a common characteristic between one or more of the search result images; identifying an additional image that shares the common characteristic, wherein the additional image is not one of the search result images; and propagating the image metadata associated with the one or more seed images to the additional image.
1. A computer-implemented method for propagating image metadata: receiving one or more seed images associated with a content category; conducting a content-based image retrieval via a computing device having a processor and a memory to identify one or more search result images stored in one or more databases comprising computer-readable media and communicatively coupled to the computing device; propagating image metadata associated with the one or more seed images to the one or more search result images; identifying a common characteristic between one or more of the search result images; identifying an additional image that shares the common characteristic, wherein the additional image is not one of the search result images; and propagating the image metadata associated with the one or more seed images to the additional image. 9. The computer-implemented method of claim 1 , wherein a confidence level is calculated for each search result image that indicates a likelihood that the search result image belongs in the content category, and wherein a human judge determines that a search result image belongs in the content category or does not belong in the content category when the confidence level is below a predetermined threshold.