1. A computer-implemented method for repairing a set of defects associated with a three-dimensional (3D) model, the method comprising: analyzing the 3D model to identify the set of defects; rendering a first image that represents the 3D model from a first viewing position; generating within the first image a set of defect indicators, wherein each defect indicator is associated with a different defect in the 3D model and resides at a different location within the first image; rendering a different thumbnail image for each defect in the set of defects, wherein the thumbnail image associated with a particular defect shows the particular defect from a given viewing position; and causing a graphical user interface (GUI) to display the first image and a filmstrip that includes the thumbnail images to the end-user.