Automatic Keyframe Selection for High-Quality Image-Based Walkthrough Animation Using Viewpoint Entropy

The computation of high quality animation sequences is expensive Generation time for each frame can take a few hours Recently Image Based Rendering methods have been proposed to solve this problem As these techniques obtain new arbitrary views from precomputed ones at low cost walkthroughs may be computed faster Consequently the selection of the precomputed images is a very important step The initial set of keyframes should ful ll two requirements it must be small but provide as much information as possible on the scene In this paper we review several keyframe selection strategies and then we propose a new method based on entropy that achieve similar and in some cases better results