IMAGING DEVICE, IMAGING WORK ASSISTANCE METHOD, AND STORAGE MEDIUM STORING IMAGING WORK ASSISTANCE PROGRAM

Provided is an imaging device for imaging spots in a measurement target site, thereby allowing a 3D measurement operation to be performed for generating 3D space information based on captured images of those spots, configured to display an imaging screen that clearly indicates that there is a region for which a loop closing operation is necessary, to a user conducting imaging work to facilitate the user's proper imaging work, thereby improving the accuracy of a 3D measurement operation using SLAM. The imaging work includes, while moving in a measurement target site with holding an imaging device body, causing a visible ray camera to image spots in the measurement target site on spot by spot. The imaging screen includes a main window and a sub-window which display support images which visualize a processed region which has been subjected to a loop closing operation in the 3D measurement operation as the support information.