Holly Rushmeier | Yale University (original) (raw)
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Papers by Holly Rushmeier
Proceedings of the 14th Eurographics Workshop on Graphics and Cultural Heritage
The study of cultural heritage involves many different activities, including digital data visuali... more The study of cultural heritage involves many different activities, including digital data visualization, information analysis and sharing results. Current technologies focus on providing better tools for data representation and processing, neglecting the importance of analysis and sharing. In this paper, we present a software system, CHER-Ob, which offers powerful tools for evaluation and publication of the results of cultural heritage research, and at the same time supports visualization of various data formats. CHER-Ob also introduces the concept of Cultural Heritage Entity, which serves as a template for cultural heritage research and a model to manage projects. We use typical case studies of cultural heritage research to evaluate the system and demonstrate how it works.
IEEE Annals of the History of Computing, 1998
IEEE Computer Graphics and Applications, 2012
This issue features four articles on material appearance, which is important in many computer gra... more This issue features four articles on material appearance, which is important in many computer graphics applications. Two articles on general methods consider two distinct issues: measurement and efficient rendering. The other articles examine two extremely different types of specialized materials, illustrating the variety of application requirements and constraints.
Computer Graphics Forum, 2009
Extremely dense spatial sampling is often needed to prevent aliasing when rendering objects with ... more Extremely dense spatial sampling is often needed to prevent aliasing when rendering objects with high frequency variations in geometry and reflectance. To accelerate the rendering process, we introduce characteristic point maps (CPMs), a hierarchy of view-...
Computer Graphics Forum, 2011
Bidirectional texture functions (BTFs) represent the appearance of complex materials. Three major... more Bidirectional texture functions (BTFs) represent the appearance of complex materials. Three major shortcomings with BTFs are the bulky storage, the difficulty in editing and the lack of efficient rendering methods. To reduce storage, many compression techniques have been applied to BTFs, but the results are difficult to edit. To facilitate editing, analytical models have been fit, but at the cost of accuracy of representation for many materials. It becomes even more challenging if efficient rendering is also needed. We introduce a high-quality general representation that is, at once, compact, easily editable, and can be efficiently rendered. The representation is computed by adopting the stagewise Lasso algorithm to search for a sparse set of analytical functions, whose weighted sum approximates the input appearance data. We achieve compression rates comparable to a state-of-the-art BTF compression method. We also demonstrate results in BTF editing and rendering.
We describe a recent project to create a 3D digital model of Michelangelo&#39... more We describe a recent project to create a 3D digital model of Michelangelo's Florentine Pieta`.The emphasis is on the practical issues such as equipment selection and modification, theplanning of data acquisition, dealing with the constraints of the museum environment,overcoming problems encountered with "real" rather than idealized data, and presenting themodel in a form that is suitable for the art historian
Communications of The ACM, 2008
ABSTRACT Researchers of molecular computing and communication are focusing on the type of breakth... more ABSTRACT Researchers of molecular computing and communication are focusing on the type of breakthroughs needed to make the vision of ultrasmall, biocompatible computers a reality.
Computer Graphics Forum, 2010
Papercraft models can serve as inexpensive prototypes in shape design applications. However, in m... more Papercraft models can serve as inexpensive prototypes in shape design applications. However, in making the models some geometric detail is necessarily lost, and artificial creases may be visible, thereby limiting the utility of these models. To compensate for these practical limitations, we introduce the use of printed patterns on papercraft models to enhance the perception of the shape they are intended to represent. We propose pattern generation schemes that modulate the sizes, directions, and densities of glyphs of patterns based on geometric attributes. We present a psychophysical experiment designed to explore the effect that printed patterns have on the perception of the papercraft model shapes. We find that models with printed patterns are perceived to represent the intended shape more accurately, and, further, that the type of printed pattern has an impact on the perceived shape.
ACM Transactions on Graphics, 2011
Abstract We present the first physically-based interactive system to facilitate the appearance de... more Abstract We present the first physically-based interactive system to facilitate the appearance design at different scales consistently, through manipulations of both small-scale geometry and materials. The core of our system is a novel reflectance filtering algorithm, which ...
Communications of The ACM, 2007
The meaning and implementation of the term" computing" has changed greatly since ACM wa... more The meaning and implementation of the term" computing" has changed greatly since ACM was first organized 60 years ago. This special section presents overview articles collectively called" non-silicon-based new computing paradigms." Although these paradigms...
ACM Transactions on Graphics
ABSTRACT Compositing is one of the most commonly performed operations in computer graphics. A rea... more ABSTRACT Compositing is one of the most commonly performed operations in computer graphics. A realistic composite requires adjusting the appearance of the foreground and background so that they appear compatible; unfortunately, this task is challenging and poorly understood. We use statistical and visual perception experiments to study the realism of image composites. First, we evaluate a number of standard 2D image statistical measures, and identify those that are most significant in determining the realism of a composite. Then, we perform a human subjects experiment to determine how the changes in these key statistics influence human judgements of composite realism. Finally, we describe a data-driven algorithm that automatically adjusts these statistical measures in a foreground to make it more compatible with its background in a composite. We show a number of compositing results, and evaluate the performance of both our algorithm and previous work with a human subjects study.
Proceedings of the 14th Eurographics Workshop on Graphics and Cultural Heritage
The study of cultural heritage involves many different activities, including digital data visuali... more The study of cultural heritage involves many different activities, including digital data visualization, information analysis and sharing results. Current technologies focus on providing better tools for data representation and processing, neglecting the importance of analysis and sharing. In this paper, we present a software system, CHER-Ob, which offers powerful tools for evaluation and publication of the results of cultural heritage research, and at the same time supports visualization of various data formats. CHER-Ob also introduces the concept of Cultural Heritage Entity, which serves as a template for cultural heritage research and a model to manage projects. We use typical case studies of cultural heritage research to evaluate the system and demonstrate how it works.
IEEE Annals of the History of Computing, 1998
IEEE Computer Graphics and Applications, 2012
This issue features four articles on material appearance, which is important in many computer gra... more This issue features four articles on material appearance, which is important in many computer graphics applications. Two articles on general methods consider two distinct issues: measurement and efficient rendering. The other articles examine two extremely different types of specialized materials, illustrating the variety of application requirements and constraints.
Computer Graphics Forum, 2009
Extremely dense spatial sampling is often needed to prevent aliasing when rendering objects with ... more Extremely dense spatial sampling is often needed to prevent aliasing when rendering objects with high frequency variations in geometry and reflectance. To accelerate the rendering process, we introduce characteristic point maps (CPMs), a hierarchy of view-...
Computer Graphics Forum, 2011
Bidirectional texture functions (BTFs) represent the appearance of complex materials. Three major... more Bidirectional texture functions (BTFs) represent the appearance of complex materials. Three major shortcomings with BTFs are the bulky storage, the difficulty in editing and the lack of efficient rendering methods. To reduce storage, many compression techniques have been applied to BTFs, but the results are difficult to edit. To facilitate editing, analytical models have been fit, but at the cost of accuracy of representation for many materials. It becomes even more challenging if efficient rendering is also needed. We introduce a high-quality general representation that is, at once, compact, easily editable, and can be efficiently rendered. The representation is computed by adopting the stagewise Lasso algorithm to search for a sparse set of analytical functions, whose weighted sum approximates the input appearance data. We achieve compression rates comparable to a state-of-the-art BTF compression method. We also demonstrate results in BTF editing and rendering.
We describe a recent project to create a 3D digital model of Michelangelo&#39... more We describe a recent project to create a 3D digital model of Michelangelo's Florentine Pieta`.The emphasis is on the practical issues such as equipment selection and modification, theplanning of data acquisition, dealing with the constraints of the museum environment,overcoming problems encountered with "real" rather than idealized data, and presenting themodel in a form that is suitable for the art historian
Communications of The ACM, 2008
ABSTRACT Researchers of molecular computing and communication are focusing on the type of breakth... more ABSTRACT Researchers of molecular computing and communication are focusing on the type of breakthroughs needed to make the vision of ultrasmall, biocompatible computers a reality.
Computer Graphics Forum, 2010
Papercraft models can serve as inexpensive prototypes in shape design applications. However, in m... more Papercraft models can serve as inexpensive prototypes in shape design applications. However, in making the models some geometric detail is necessarily lost, and artificial creases may be visible, thereby limiting the utility of these models. To compensate for these practical limitations, we introduce the use of printed patterns on papercraft models to enhance the perception of the shape they are intended to represent. We propose pattern generation schemes that modulate the sizes, directions, and densities of glyphs of patterns based on geometric attributes. We present a psychophysical experiment designed to explore the effect that printed patterns have on the perception of the papercraft model shapes. We find that models with printed patterns are perceived to represent the intended shape more accurately, and, further, that the type of printed pattern has an impact on the perceived shape.
ACM Transactions on Graphics, 2011
Abstract We present the first physically-based interactive system to facilitate the appearance de... more Abstract We present the first physically-based interactive system to facilitate the appearance design at different scales consistently, through manipulations of both small-scale geometry and materials. The core of our system is a novel reflectance filtering algorithm, which ...
Communications of The ACM, 2007
The meaning and implementation of the term" computing" has changed greatly since ACM wa... more The meaning and implementation of the term" computing" has changed greatly since ACM was first organized 60 years ago. This special section presents overview articles collectively called" non-silicon-based new computing paradigms." Although these paradigms...
ACM Transactions on Graphics
ABSTRACT Compositing is one of the most commonly performed operations in computer graphics. A rea... more ABSTRACT Compositing is one of the most commonly performed operations in computer graphics. A realistic composite requires adjusting the appearance of the foreground and background so that they appear compatible; unfortunately, this task is challenging and poorly understood. We use statistical and visual perception experiments to study the realism of image composites. First, we evaluate a number of standard 2D image statistical measures, and identify those that are most significant in determining the realism of a composite. Then, we perform a human subjects experiment to determine how the changes in these key statistics influence human judgements of composite realism. Finally, we describe a data-driven algorithm that automatically adjusts these statistical measures in a foreground to make it more compatible with its background in a composite. We show a number of compositing results, and evaluate the performance of both our algorithm and previous work with a human subjects study.