Extreme Model Simplification for Forest Rendering
نویسندگان
چکیده
Models of large forest scenes are of a geometric complexity that surpasses even the capabilities of current high end graphics hardware. We propose an extreme simplification method which allows us to render such scenes in realtime. Our work is an extension of the image based-simplification method of Billboard Clouds. We automatically generate tree model representations of 15-50 textured polygons. In this paper, we focus on the algorithmic details to improve the simplification process for foliage. We use the simplified models as static levels-of-detail in the medium to far field and demonstrate how our approach yields real-time rendering of dense forest scenes for walkthroughs and flyovers.
منابع مشابه
Enhanced Billboards for Model Simplification
A set of billboards can represent 3D models for extreme simplification in real-time rendering. Unlike conventional polygon method, billboard-based technique has the rendering time of the model proportional to its contribution to the image. Thus, it has an automatically built-in Level of Detail. However, previous techniques still have limited viewing angle and do not accurately represent the mod...
متن کاملExtreme simplification and rendering of point sets using algebraic multigrid
We present a novel approach for extreme simplification of point set models, in the context of realtime rendering. Point sets are often rendered using simple point primitives, such as oriented discs. However, this requires using many primitives to render even moderately simple shapes. Often, onewishes to render a simplified model using only a few primitives, thus trading accuracy for simplicity....
متن کاملMultiresolution foliage for forest rendering
Plants are important objects in virtual environments. High complexity of shape structure is found in plant communities. Level of detail (LOD) of plant geometric models becomes important for interactive forest rendering. We emphasize three major problems in current research: the time consumption in LOD model construction and extraction, the balance between visual effect and data compression, and...
متن کاملPerceptually Driven Interactive Rendering
We present a framework for accelerating interactive rendering, grounded in psychophysical models of visual perception. This framework is applicable to rendering techniques that regulate resolution—and hence rendering load—using a hierarchy of local simplification operations. Our method drives those local operations directly by perceptual metrics: the effect of each simplification on the final i...
متن کاملComparing Simplification and Image-Based Techniques for 3D Client-Server Rendering Systems
A mathematical model is presented for comparing geometric and image-based simplification methods. Geometric simplification reduces the number of polygons in the virtual object and image-based simplification replaces the object with an image. Our model integrates and extrapolates existing accuracy estimates, enabling the comparison of different simplification methods in order to choose the most ...
متن کامل