Steve Marschner
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View article: HairFormer: Transformer-Based Dynamic Neural Hair Simulation
HairFormer: Transformer-Based Dynamic Neural Hair Simulation Open
Simulating hair dynamics that generalize across arbitrary hairstyles, body shapes, and motions is a critical challenge. Our novel two-stage neural solution is the first to leverage Transformer-based architectures for such a broad generaliz…
View article: Synergistic diffraction and multibounce reflection interference within single iridescent microstructures
Synergistic diffraction and multibounce reflection interference within single iridescent microstructures Open
Multibounce reflection interference produces structural coloration due to interference between light rays traveling by different paths of total internal reflection in a microscale cavity. However, as microscale structures are reduced in di…
View article: Self-Calibrating Gaussian Splatting for Large Field of View Reconstruction
Self-Calibrating Gaussian Splatting for Large Field of View Reconstruction Open
In this paper, we present a self-calibrating framework that jointly optimizes camera parameters, lens distortion and 3D Gaussian representations, enabling accurate and efficient scene reconstruction. In particular, our technique enables hi…
View article: A Simple Approach to Differentiable Rendering of SDFs
A Simple Approach to Differentiable Rendering of SDFs Open
We present a simple algorithm for differentiable rendering of surfaces represented by Signed Distance Fields (SDF), which makes it easy to integrate rendering into gradient-based optimization pipelines. To tackle visibility-related derivat…
View article: Fiber-level Woven Fabric Capture from a Single Photo
Fiber-level Woven Fabric Capture from a Single Photo Open
Accurately rendering the appearance of fabrics is challenging, due to their complex 3D microstructures and specialized optical properties. If we model the geometry and optics of fabrics down to the fiber level, we can achieve unprecedented…
View article: ObjectCarver: Semi-automatic segmentation, reconstruction and separation of 3D objects
ObjectCarver: Semi-automatic segmentation, reconstruction and separation of 3D objects Open
Implicit neural fields have made remarkable progress in reconstructing 3D surfaces from multiple images; however, they encounter challenges when it comes to separating individual objects within a scene. Previous work has attempted to tackl…
View article: A Simple Approach to Differentiable Rendering of SDFs
A Simple Approach to Differentiable Rendering of SDFs Open
We present a simple algorithm for differentiable rendering of surfaces represented by Signed Distance Fields (SDF), which makes it easy to integrate rendering into gradient-based optimization pipelines. To tackle visibility-related derivat…
View article: Rendering Participating Media Using Path Graphs
Rendering Participating Media Using Path Graphs Open
Rendering volumetric scattering media, including clouds, fog, smoke, and other complex materials, is crucial for realism in computer graphics. Traditional path tracing, while unbiased, requires many long path samples to converge in scenes …
View article: Accurate Differential Operators for Hybrid Neural Fields
Accurate Differential Operators for Hybrid Neural Fields Open
Neural fields have become widely used in various fields, from shape representation to neural rendering, and for solving partial differential equations (PDEs). With the advent of hybrid neural field representations like Instant NGP that lev…
View article: A Practical Wave Optics Reflection Model for Hair and Fur
A Practical Wave Optics Reflection Model for Hair and Fur Open
Traditional fiber scattering models, based on ray optics, are missing some important visual aspects of fiber appearance. Previous work [Xia et al. 2020] on wave scattering from ideal extrusions demonstrated that diffraction produces strong…
View article: A Full-Wave Reference Simulator for Computing Surface Reflectance
A Full-Wave Reference Simulator for Computing Surface Reflectance Open
Computing light reflection from rough surfaces is an important topic in computer graphics. Reflection models developed based on geometric optics fail to capture wave effects such as diffraction and interference, while existing models based…
View article: Leveraging 4D Golf Apparel Wear Simulation in Online Shopping: A Promising Approach to Minimizing the Carbon Footprint
Leveraging 4D Golf Apparel Wear Simulation in Online Shopping: A Promising Approach to Minimizing the Carbon Footprint Open
As fashion e-commerce grows, the online return rates are running higher than ever before. Online customers buy the same product in multiple sizes or colors with the intention of returning what is not necessary as they are unable to have a …
View article: Iridescent Water Droplets Beyond Mie Scattering
Iridescent Water Droplets Beyond Mie Scattering Open
Looking at a cup of hot tea, an observer can see color patterns and granular textures both on the water surface and in the steam. Motivated by this example, we model the appearance of iridescent water droplets. Mie scattering describes the…
View article: Weavecraft
Weavecraft Open
3D weaving is an emerging technology for manufacturing multilayer woven textiles. In this work, we present Weavecraft: an interactive, simulation-based design tool for 3D weaving. Unlike existing textile software that uses 2D representatio…
View article: A Taxonomy of Bidirectional Scattering Distribution Function Lobes for Rendering Engineers
A Taxonomy of Bidirectional Scattering Distribution Function Lobes for Rendering Engineers Open
We propose a taxonomy and terminology for rendering engineers to use in describing the main categories of mathematical lobes that are combined to implement bidirectional scattering distribution functions (BSDFs). Bringing consistent langua…
View article: Learning generative models for rendering specular microgeometry
Learning generative models for rendering specular microgeometry Open
Rendering specular material appearance is a core problem of computer graphics. While smooth analytical material models are widely used, the high-frequency structure of real specular highlights requires considering discrete, finite microgeo…
View article: Weaving objects
Weaving objects Open
3D weaving is an industrial process for creating volumetric material through organized multiaxis interlacing of yarns. The overall complexity and rarity of 3D weaving have limited its market to aerospace and military applications. Current …
View article: Rendering specular microgeometry with wave optics
Rendering specular microgeometry with wave optics Open
Simulation of light reflection from specular surfaces is a core problem of computer graphics. Existing solutions either make the approximation of providing only a large-area average solution in terms of a fixed BRDF (ignoring spatial detai…
View article: A Simple Diffuse Fluorescent BBRRDF Model
A Simple Diffuse Fluorescent BBRRDF Model Open
Fluorescence - the effect of a photon being absorbed at one wavelength and re-emitted at another - is present in many common materials such as clothes and paper. Yet there has been little research in rendering or modeling fluorescent surfa…
View article: Balancing Zero-Sum Games with One Variable per Strategy
Balancing Zero-Sum Games with One Variable per Strategy Open
A key challenge in game design is achieving balance between the strategies available to the players. Traditionally this has been done through playtesting, with its difficult requirements of time, labor, and interpretation of results. To ma…
View article: Animating elastic rods with sound
Animating elastic rods with sound Open
Sound generation methods, such as linear modal synthesis, can sonify a wide range of physics-based animation of solid objects, resolving vibrations and sound radiation from various structures. However, elastic rods are an important compute…
View article: Printing arbitrary meshes with a 5DOF wireframe printer
Printing arbitrary meshes with a 5DOF wireframe printer Open
Traditional 3D printers fabricate objects by depositing material to build up the model layer by layer. Instead printing only wireframes can reduce printing time and the cost of material while producing effective depictions of shape. Howeve…
View article: Position-normal distributions for efficient rendering of specular microstructure
Position-normal distributions for efficient rendering of specular microstructure Open
Specular BRDF rendering traditionally approximates surface microstructure using a smooth normal distribution, but this ignores glinty effects, easily observable in the real world. While modeling the actual surface microstructure is possibl…
View article: Front Matter
Front Matter Open
Computer graphics is a unique and fascinating field -it draws people with many goals but with a shared passion for building models and simulations that exhibit the complexity, simplicity, and beauty of our real world.Our emphases on genera…
View article: On-The-Fly Print
On-The-Fly Print Open
Current interactive fabrication tools offer tangible feedback by allowing users to work directly on the physical model, but they are slow because users need to participate in the physical instantiation of their designs. In contrast, CAD so…
View article: Matching Real Fabrics with Micro-Appearance Models
Matching Real Fabrics with Micro-Appearance Models Open
Micro-appearance models explicitly model the interaction of light with microgeometry at the fiber scale to produce realistic appearance. To effectively match them to real fabrics, we introduce a new appearance matching framework to determi…
View article: Geometric tools for exploring manifolds of light transport paths
Geometric tools for exploring manifolds of light transport paths Open
Photorealistic images created using physical simulations of light have become a ubiquitous element of our everyday lives. The most successful techniques for producing such images replicate the key physical phenomena in a detailed software …