In one embodiment, a thermographic imaging device having a visual compare mode that allows a user to compare a live image of a subject to a previously captured image of the same subject to aid the user in aligning the live image with the previously captured image. In this manner, a user can capture a series of images of the subject with the device located and oriented at a common location and orientation that is consistent throughout the series. In another embodiment, trend analysis software that includes a thermographic tool copying feature for copying one or more thermographic tools from a tooled thermographic image file to one or more non-tooled thermographic image files. In some embodiments, the software includes a trend-graphing feature that generates one or more trend plots after one or more tools have been copied to one or more non-tooled thermographic image files.