1. An inpainting device using segmentation of a reference region, comprising: a region determination unit configured to determine an inpainting target region present within video image content and a reference region composed of pixels present within a preset distance from boundary pixels of the inpainting target region; an inpainting group setting unit configured to set inpainting groups composed of respective pairs of segmented reference regions obtained by segmenting the reference region using pixel values within the reference region and segmented target regions obtained by segmenting the target region so as to correspond to the segmented reference region; an inpainting unit configured to perform segmentation inpainting adapted to perform inpainting on a segmented target region using the segmented reference region on an inpainting group basis, and non-segmentation inpainting adapted to perform inpainting on the target region using the reference region; an information provision unit configured to visually provide a result of the segmentation inpainting, a result of the non-segmentation inpainting, and information about a difference between the results of the segmentation inpainting and the non-segmentation inpainting to the user; and a group set generation unit configured to differently generate group sets based on a number of inpainting groups.