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Procedural Editing of Bidirectional Texture Functions [article]

Gero Mueller, Ralf Sarlette, Reinhard Klein
2007 Symposium on Rendering  
By employing recent algorithms for real-time texture synthesis and BTF compression our technique allows interactive editing.  ...  Our main idea is to use procedural geometry to define the basic structure of a material and then to enrich this structure with the BTF information captured from real materials.  ...  Therefore, commercial leather shaders are often based on on Worley's cellular texture basis function [Wor96] which generates cracks by com- puting the Voronoi diagram of randomly distributed sites and  ... 
doi:10.2312/egwr/egsr07/219-230 fatcat:vxmaq3rrgfeppg6bgtvasbvaae

Survey of Procedural Methods for Two-Dimensional Texture Generation

Junyu Dong, Jun Liu, Kang Yao, Mike Chantler, Lin Qi, Hui Yu, Muwei Jian
2020 Sensors  
Example textures are generated using these methods with varying parameter values. Furthermore, we survey post-processing methods based on the filtering and combination of different generation models.  ...  Procedural texture generation is the process of creating textures using mathematical models.  ...  Texture Generation Based on Fourier Spectral Synthesis Fourier spectral synthesis is one of the most commonly used techniques to generate random textures.  ... 
doi:10.3390/s20041135 pmid:32093019 pmcid:PMC7070409 fatcat:xmsxfgm225gehdh244nax72zv4

Texture synthesis using label assignment over a graph

Jack Caron, David Mould
2014 Computers & graphics  
Using PUPs to interpolate among data values distributed through the plane, the problem of texture synthesis can be approached from the perspective of point placement and attribute assignment; a graph over  ...  We propose employing PUPs for procedural texture synthesis, taking advantage of the framework's guarantees of high continuity and local support.  ...  Acknowledgements We would like to thank Adam Runions and Faramarz Samavati for helpful discussions about PUPs. Financial support for this work was provided by NSERC, GRAND, and Carleton University.  ... 
doi:10.1016/j.cag.2013.10.004 fatcat:xtjgo26aijhppkauhmhwrqb2my

Semiregular Solid Texturing from 2D Image Exemplars

Song-Pei Du, Shi-Min Hu, Ralph R. Martin
2013 IEEE Transactions on Visualization and Computer Graphics  
Particle positions in the texture images are also used to guide spatial placement of the 3D particles during synthesis of the 3D texture.  ...  Solid textures, comprising 3D particles embedded in a matrix in a regular or semi-regular pattern, are common in natural and man-made materials, such as brickwork, stone walls, plant cells in a leaf, etc  ...  Image-based solid texture synthesis Recent works use texture examples as a way of making texture synthesis easier for the user. [9] give a detailed survey of example-based texture synthesis.  ... 
doi:10.1109/tvcg.2012.129 pmid:22614330 fatcat:6kjykb7qrjablgyd53yvfmruxy

Implicit representation of inscribed volumes

Parto Sahbaei, David Mould, Brian Wyvill
2018 Proceedings of the Joint Symposium on Computational Aesthetics and Sketch-Based Interfaces and Modeling and Non-Photorealistic Animation and Rendering - Expressive '18  
We begin with a set of convex polytopes such as 3-D Voronoi diagram cells and compute inscribed volumes bounded by the cells.  ...  love through my entire life. my dear husband, Shaham, whose love, patience, encouragements and editing assistance has helped me along the way. my colleague Herbert Grasberger for his assistance and sharing  ...  Brian Wyvill and Dr. David Mould, whose expertise, guidance, support, and patience throughout my graduation experience steered me in the right direction to finish my thesis work.  ... 
doi:10.1145/3229147.3229164 dblp:conf/npar/SahbaeiMW18 fatcat:cy42o5kiuzgnfbavyrdc7hojv4

Do contests improve students skills in Computer Graphics? The case of API8

Jean-Pascal Palus, Farès Belhadj, Jean-Jacques Bourdin
2019 Eurographics State of the Art Reports  
The contest is adapted to the current skills of the students and uses a public graphic library. Students then have to produce a demo, generally a program which presents an animation.  ...  The main result presented in this paper is that with an appropriate set of tools, students program interesting demos to participate in the contest and their skills in Computer Graphics seem to improve  ...  to our courses and/or the contest.  ... 
doi:10.2312/eged.20191028 fatcat:yc3ackyfjraatmdrrt55nh6t2y

Pattern-based texturing revisited

Fabrice Neyret, Marie-Paule Cani
1999 Proceedings of the 26th annual conference on Computer graphics and interactive techniques - SIGGRAPH '99  
We also provide two alternative methods for automatically generating them, defined as extensions of Perlin's and Worley's procedural texture synthesis techniques.  ...  As our results show, the method produces textured objects that look reasonable from any viewpoint and can be used in real-time applications.  ...  Thanks to David Bourguignon for creating the sponge texture samples, to Brian Wyvill and Georges Drettakis for rereading this paper, and to Jean-Dominique Gascuel for his help in video editing.  ... 
doi:10.1145/311535.311561 dblp:conf/siggraph/NeyretC99 fatcat:zejutxrkx5bgbdhamhzsclek6q

Visualization Tool [chapter]

2017 Encyclopedia of GIS  
It is based on image-space edge enhancement, colorbased and shadow-based depth cues, and procedural texturing.  ...  Cross-References Distance Metrics Voronoi Diagram Voronoi Diagrams for Query Processing Voronoi Tesselation Voronoi Diagram Voronoi-Based Query Processing in Road Network Databases Voronoi Diagrams  ...  Sharifzadeh and Shahabi shows that the same approach is applicable for the space of SNDBs if it uses AWnetwork Voronoi diagrams.  ... 
doi:10.1007/978-3-319-17885-1_101469 fatcat:rnvtcucz6vfulmc6voflfymen4

Autocomplete Repetitive Stroking with Image Guidance [article]

Yilan Chen, Kin Chung Kwan, Li-Yi Wei, Hongbo Fu
2021 arXiv   pre-print
Image-guided drawing can compensate for the lack of skills but often requires a significant number of repetitive strokes to create textures.  ...  Existing automatic stroke synthesis methods are usually limited to predefined styles or require indirect manipulation that may break the spontaneous flow of drawing.  ...  We compute a weighted centroidal Voronoi diagram from all the strokes' center points, using 1 as weight, and denote the computed region centroids as {¯}.  ... 
arXiv:2108.07115v1 fatcat:53efl3hfxfbi5i23cnviwxxkbe

DecoSurf: Recursive Geodesic Patterns on Triangle Meshes [article]

Giacomo Nazzaro, Enrico Puppo, Fabio Pellacini
2020 arXiv   pre-print
We validate our approach by matching decoration styles from real-world photos, by analyzing the speed and accuracy of our geodesic solver, and by validating the interface with a user study.  ...  Based on this formulation, we present an interactive application that lets designers model complex recursive patterns directly on the object surface, without relying on parametrization.  ...  Procedural texturing is at the base of most pattern synthesis used both in the literature and in practice.  ... 
arXiv:2007.10918v1 fatcat:nhnx5ekc3rgfzjeqakpttoyaxq

Star-shaped metrics for mechanical metamaterial design

Jonàs Martínez, Mélina Skouras, Christian Schumacher, Samuel Hornus, Sylvain Lefebvre, Bernhard Thomaszewski
2019 ACM Transactions on Graphics  
We present a method for designing mechanical metamaterials based on the novel concept of Voronoi diagrams induced by star-shaped metrics.  ...  This capability opens up a rich space of structures with interesting aesthetics and a wide range of mechanical properties, including isotropic, tetragonal, orthotropic, as well as smoothly graded materials  ...  In order to address specific loading scenarii, Martínez et al. [2015] combined topology optimization and by-example texture synthesis in a single optimization problem.  ... 
doi:10.1145/3306346.3322989 fatcat:tuyzpoupz5bjdllj7vzkfmt4ym

Perspective Plane Program Induction from a Single Image [article]

Yikai Li, Jiayuan Mao, Xiuming Zhang, William T. Freeman, Joshua B. Tenenbaum, Jiajun Wu
2020 arXiv   pre-print
Our proposed framework, Perspective Plane Program Induction (P3I), combines search-based and gradient-based algorithms to efficiently solve the problem.  ...  to how the correct shape leads to the most regular texture in shape from texture.  ...  This work is supported by the Center for Brains, Minds and Machines (NSF STC award CCF-1231216), NSF #1447476, ONR MURI N00014-16-1-2007, and IBM Research.  ... 
arXiv:2006.14708v1 fatcat:wfcu6u4tlnepjlsbbh6wwgjadq

Feature-based cellular texturing for architectural models

Justin Legakis, Julie Dorsey, Steven Gortler
2001 Proceedings of the 28th annual conference on Computer graphics and interactive techniques - SIGGRAPH '01  
Stephen Duck provided valuable information and suggestions and also modeled the handrails in Figure 8 .  ...  This work was supported by NSF awards (CCR-9624172 and CCR-9988535), an NSF CISE Research Infrastructure award (EIA-9802220), and a gift from Pixar Animation Studios.  ...  Worley introduced a cellular texture basis function [20] , a special case of which generates cells as the voronoi diagram of a set of seed points, with remarkable results.  ... 
doi:10.1145/383259.383293 dblp:conf/siggraph/LegakisDG01 fatcat:66utehxawrgprf7oywgwl2lc3q

The 3D Model Acquisition Pipeline

Fausto Bernardini, Holly Rushmeier
2002 Computer graphics forum (Print)  
We look at the fundamental problems of range image registration, line-of-sight errors, mesh integration, surface detail and color, and texture mapping.  ...  In the area of registration we consider both the problems of finding an initial global alignment using manual and automatic means, and refining this alignment with variations of the Iterative Closest Point  ...  Here the poles of the Voronoi diagram of P are used to define an approximate normal for each sample point.  ... 
doi:10.1111/1467-8659.00574 fatcat:guniecbjrzagbnk57h3upaf65a

Recent Advances in Remeshing of Surfaces [chapter]

Pierre Alliez, Giuliana Ucelli, Craig Gotsman, Marco Attene
2008 Mathematics and Visualization  
We classify the techniques into five categories based on their end goal: structured, compatible, high quality, feature and error-driven remeshing.  ...  Remeshing is a key component of many geometric algorithms, including modeling, editing, animation and simulation.  ...  More recently, the Lloyd-based isotropic remeshing approach has been extended in two directions: one uses the geodesic distance on triangle meshes to generate a centroidal geodesic-based Voronoi diagram  ... 
doi:10.1007/978-3-540-33265-7_2 fatcat:n7yaueoafrhm7hhcvkwcihsf54
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