Two Layer Image Tile Mosaics

Abstract

This study proposes a method of Two Layer Image Tile Mosaics to preserve detailed depiction of the source image. This method is composed of following three stages. First of all, the upper layer tile is located through a centroidal Voronoi diagram to which an edge avoidance technique is applied, and the position of the lower layer tile is calculated using Delaunay triangulation. Secondly, discover the size and direction field of the tile considering the relation between tiles. Thirdly, adopt a Photomosaics technique to use the image tiles. At this time, the technique of multi-level indexing is used to accelerate the speed of image searching. The Two Layer Image Tile Mosaics obtained through the above process preserve the detailed depiction of source images effectively.