Fractal modeling, based on fractional Brownian motion(fBm), is one of the most popular methods used for modeling natural objects. To reflect complex shapes of natural objects, objects modeled by fractal modeling require a vast amount of data, which consumes much memory space, generation time, and rendering time compared to artificial objects.
In this paper, we propose a new method for partial generation of fractal objects with appropriate levels of detail to reduce memory usage and thus efficiently synthesize fractal images. This can be achieved by generating only the parts of fractal objects within a view volume and by avoiding unnecessary data ampilification while satisfying given levels of detail. The proposed partial generation scheme is successfully applied to efficient animation of a walkthrough over fractal objects according to the movement of a view. For faster animation, we also propose a method to incrementally generate fractal objects using the object-level coherency when the view is slightly changed.
