Animation with Threshold Textures
نویسنده
چکیده
We present a method for frame coherent texturing and hatching of 3D models with a discrete set of colors. Our technique is inspired by various artistic styles that use a limited set of colors to convey surface shape and texture. In previous research discrete color shading was produced by modifying smooth shading with a threshold function. We extend this approach and specify threshold values with an image or a procedural texture. Texture values and mapping coordinates are adapted to surface orientation and scale. Aliasing artifacts are eliminated by the modified filtering technique. The threshold texturing approach enables an animator to control local shading and to display surface roughness and curvature with a limited set of colors.
منابع مشابه
Highlight and Re ection-Independent Multiresolution Textures from Image Sequences
Rendering is one of the most important tasks in computer graphics and animation. It is widely recognized that texture maps are essential for adding to the visual content of the rendered image. Extraction of textures from a single photograph poses severe diiculties and is sometimes impossible, while artiicial texture synthesis does not address the full range of desired textures. In this paper we...
متن کاملThe Texture Animator
This paper discusses three distinct techniques for animation of procedural textures and describes the assisting software tool. Animation is attained by moving the rendered point before texture evaluation, changing the definition of texture space or changing the texture colour mapping. Examples are given for textures that base on noise and turbulence functions in order to simulate natural phenom...
متن کاملReal-time dynamics for geometric textures in shell
Embedding geometric textures in a shell space around an arbitrary surface has been a popular way to add highly detailed geometric details and enhance visual richness in graphics community, but the dynamic effects of geometric textures have not been modeled and simulated. In this paper, we introduce an efficient algorithm for deforming geometric textures with dynamic effects. The algorithm consi...
متن کاملFlow Visualization Using Moving Textures
An intuitive way to visualize a flow is to watch particles or textures move in the flow. The early color table animation of [1] was an example of this technique. More recently, van Wijk [2] has proposed advecting and motion blurring particles by the flow field. The LIC method [3, 4, 5] uses integrals of white noise textures along streamlines, moving the weighting function in the integrals from ...
متن کاملClassification and Volume Morphing for Performance-driven Facial Animation
We present a new facial animation approach that produces a wide variety of realistic facial expressions with advantages over existing geometry deformation and morphing methods for performance-driven animation systems. These systems sense and reconstruct a real person's facial expressions from an image sequence. The novelty of our approach is to sense and animate both textures and geometry using...
متن کامل