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A thesis on sketch-based techniques for mesh deformation and editing

by Raquel Bujans , 2006
"... The goal of this research is to develop new and more intuitive ways for editing a mesh from a static camera angle. I present two ways to edit a mesh via a simple sketching system. The first method is a gray-scale editor which allows the user to specify a fall off function for the region being deform ..."
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The goal of this research is to develop new and more intuitive ways for editing a mesh from a static camera angle. I present two ways to edit a mesh via a simple sketching system. The first method is a gray-scale editor which allows the user to specify a fall off function for the region being

Sketch-based building modelling

by David J. Olsen, Nathan D. Pitman, Sutirtha Basak, Burkhard C. Wünsche - in ‘Proceedings of GRAPP 2011 , 2011
"... sketch-based modelling, sketch-based interfaces, virtual environments, displacement mapping Computer generated 3D models of buildings are an important component of many computer graphics applications. Rapid and easy-to-use modelling techniques are often more important than the ability to create prec ..."
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sketch-based modelling, sketch-based interfaces, virtual environments, displacement mapping Computer generated 3D models of buildings are an important component of many computer graphics applications. Rapid and easy-to-use modelling techniques are often more important than the ability to create

EUROGRAPHICS Workshop on Sketch-Based Interfaces and Modeling (2006) Thomas Stahovich and Mario Costa Sousa (Editors) Abstract Transformation Strokes

by Aaron Severn, Faramarz Samavati, Mario Costa Sousa
"... In this paper, we present a sketch-based technique for specifying transformations for general models by means of a single stroke, offering a more streamlined form of user interaction. The shape of the stroke is interpreted to allow composition of translation, rotation and scaling. We extract two mai ..."
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In this paper, we present a sketch-based technique for specifying transformations for general models by means of a single stroke, offering a more streamlined form of user interaction. The shape of the stroke is interpreted to allow composition of translation, rotation and scaling. We extract two

Similarity estimation techniques from rounding algorithms

by Moses S. Charikar - In Proc. of 34th STOC , 2002
"... A locality sensitive hashing scheme is a distribution on a family F of hash functions operating on a collection of objects, such that for two objects x, y, Prh∈F[h(x) = h(y)] = sim(x,y), where sim(x,y) ∈ [0, 1] is some similarity function defined on the collection of objects. Such a scheme leads ..."
Abstract - Cited by 449 (6 self) - Add to MetaCart
. Based on this insight, we construct new locality sensitive hashing schemes for: 1. A collection of vectors with the distance between ⃗u and ⃗v measured by θ(⃗u,⃗v)/π, where θ(⃗u,⃗v) is the angle between ⃗u and ⃗v. This yields a sketching scheme for estimating the cosine similarity measure between two

Sketch-Based Interaction A Sketch-Based Interface for Clothing Virtual Characters

by unknown authors
"... This interactive system for garment creation determines a garment’s shape and how the character wears it based on a user-drawn sketch. The system then uses distances between the 2D garment silhouette and the character model to infer remaining distance variations in 3D. Despite sometimes questionable ..."
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, people typically sketch them—or, more precisely, sketch a 2D projection of the shape from which our brains can seamlessly reconstruct a full 3D representation. Sketch-based interfaces seem all the more convenient because most people who design 3D objects and regularly use 3D modeling programs already use

A Sketch-Based Method to Control Deformation in a Skeletal Implicit Surface Modeler

by Masamichi Sugihara, Erwin De Groot, Brian Wyvill, Ryan Schmidt - EUROGRAPHICS WORKSHOP ON SKETCH-BASED INTERFACES AND MODELING, C. ALVARADO AND M.- P. CANI (EDITORS) , 2008
"... Skeletal implicit surfaces offer many advantages for sketch-based modeling systems, such as blending, CSG, and a procedural object hierarchy. Free-form deformation (FFD) is also extremely useful in this context, however existing FFD approaches do not support implicit surface representations, and FFD ..."
Abstract - Cited by 9 (3 self) - Add to MetaCart
, and FFD lattice manipulation is timeconsuming compared to sketch-based techniques. In this paper, we describe an FFD technique suitable for implicit surface representations. To enhance real-time feedback, we split the problem into an approximate formulation used during interactive deformation, and a more

ShapeShop: Sketch-Based Solid Modeling with BlobTrees

by R. Schmidt, B. Wyvill, M. C. Sousa, J. A. Jorge , 2005
"... Various systems have explored the idea of inferring 3D models from sketched 2D outlines. In all of these systems the underlying modeling methodology limits the complexity of models that can be created interactively. The ShapeShop sketch-based modeling system utilizes Hierarchical Implicit Volume M ..."
Abstract - Cited by 81 (18 self) - Add to MetaCart
Models (BlobTrees) as an underlying shape representation. The BlobTree framework supports interactive creation of complex, detailed solid models with arbitrary topology. A new technique is described for inflating 2D contours into rounded three-dimensional implicit volumes. Sketch-based modeling

Abstract Sketch-based Modeling with Few Strokes

by Joseph Jacob, Cherlin Faramarz, Samavati Mario, Costa Sousa, Joaquim A. Jorge
"... We present a novel sketch-based system for the interactive modeling of a variety of free-form 3D objects using just a few strokes. Our technique is inspired by the traditional illustration strategy for depicting 3D forms where the basic geometric forms of the subjects are identified, sketched and pr ..."
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We present a novel sketch-based system for the interactive modeling of a variety of free-form 3D objects using just a few strokes. Our technique is inspired by the traditional illustration strategy for depicting 3D forms where the basic geometric forms of the subjects are identified, sketched

A Sketch-based Sampling Algorithm on Sparse Data

by Ping Li, Kenneth W. Church, Trevor J. Hastie , 2006
"... We propose a sketch-based sampling algorithm, which effectively exploits the data sparsity. Sampling methods have become popular in large-scale data mining and information retrieval, where high data sparsity is a norm. A distinct feature of our algorithm is that it combines the advantages of both co ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
conventional random sampling and more modern randomized algorithms such as local sensitive hashing (LSH). While most sketch-based algorithms are designed for specific summary statistics, our proposed algorithm is a general purpose technique, useful for estimating any summary statistics including two

Sketch-based Summarization of Ordered XML Streams

by Veronica Mayorga, Neoklis Polyzotis
"... Abstract — In this paper, we tackle the problem of approximately answering a continuous aggregate query over an XML stream using limited memory. This problem is key in the development of tools for the on-line monitoring and analysis of streaming XML data, such as complex event streams, RSS feeds, or ..."
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data and query characteristics in order to improve the accuracy of the sketch-based approximation. We present an extensive experimental study on real-life and synthetic data sets that validates the effectiveness of our approach and demonstrates its advantages over existing techniques. I.
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