1. A method comprising: receiving a selection of an image of a plurality of images; in response to the selection of the image, displaying one or more subimages, each of the subimages comprising a respective object detected in the selected image by a first detection process; receiving a request to invoke a second detection process on the selected image; performing, by a processor, the second detection process on the selected image to identify at least one previously-undetected subimage in the image; and modifying the displayed one or more subimages to include the previously undetected subimage.