Generation of coherent mosaic animations: enhancement and evaluation of temporal coherence

Abstract

Although the creation static mosaic-like images from non-mosaic input has been studied, satisfactory methods to maintain and evaluate the temporal coherence of tiles for mosaic animations have remained elusive. Here, we describe a method that successfully generates mosaic animations from videos by applying a temporally and spatially coherent tile-arrangement technique. We arrange tiles on the basis of the feature lines extracted from video input. We then animate the tiles along the motion of the video, add and delete tiles to preserve the tile density, and smooth tile color via frames. Finally, we propose indices to evaluate the temporal coherence of video-based animations, and show that our animations are temporally coherent.

Photo collage-based photograph display system on mobile computing platform

“…In [25], the social networking context was utilized to generate a photomosaic album that enabled the selection of photographs from the albums of users' friends in the social networking service by computing the closeness of connections between users. In addition, a number of studies for various types of mosaics [8,12,19] have been conducted in the non-photorealistic rendering and animation field. However, they mainly focus on stylizing mosaic and not on photo collage.…”

Scattered Mosaic Rendering Using Unit Images

“…Kang et al [7] also extended Hansner's method to generate the animation using video. They used the motion information in between frames.…”