Allan Rocha, Usman Alim, Julio Daniel Silva, and Mario Costa Sousa - - PowerPoint PPT Presentation

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Allan Rocha, Usman Alim, Julio Daniel Silva, and Mario Costa Sousa Interactive Modeling, Visualization & Analytics R&D Group injection well (water) Geological Model Attributes Rock type Porosity Permeability Water

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Interactive Modeling, Visualization & Analytics R&D Group

Allan Rocha, Usman Alim, Julio Daniel Silva, and Mario Costa Sousa

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Geological Model

injection well (water) production well (oil) Attributes

  • Rock type
  • Porosity
  • Permeability
  • Water Saturation
  • Oil Saturation
  • Oil flow rate
  • Water flow rate
  • Pressure
  • …
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[ Kirby et al., VIS, 1999] Visual encoding

3rd Layer

  • Arrow glyphs

(velocity) 1st Layer

  • Ellipse glyphs

(divergence) 2nd Layer

  • Colors

(vorticity)

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1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999 2016

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces

2016

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SLIDE 9

Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces

2016

textures + raster operations

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering

2016

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering

2016

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering

2016

Lack of research continuity

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering LIC + colormap

2016

Lack of research continuity

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering LIC + colormap Procedural noise

2016

Lack of research continuity

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering LIC + colormap Procedural noise 2D-glyphs image-space

2016

Lack of research continuity

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering LIC + colormap Procedural noise 2D-glyphs image-space

  • bject-space

2016

Lack of research continuity

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2016 2003 2011 1999

Layering on Surfaces 2D Layering

Lack of research continuity

  • Difficult to render 2D-glyphs and
  • ther visual representations on

arbitrary surfaces

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2016 2003 2011 1999

Layering on Surfaces 2D Layering

Lack of research continuity

  • Difficult to render 2D-glyphs and
  • ther visual representations on

arbitrary surfaces

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  • Pelt. et al., 2014
  • Visualization of wall shear stress (WSS)
  • Design of four 2D-glyphs using
  • riented quads

Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

Flying glyphs Clipping

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

1991 1998 2002 2004 2006 2008 2012 2014 2003 2011 1999

Layering on Surfaces 2D Layering

2016

  • A technique to place 2D

representations on arbitrary surfaces.

  • Visual design on surfaces similar to 2D
  • Extend the concept of layering to co-

visualize a high number of attributes on surfaces.

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

  • Definition. Visual representations (a pattern, a text, a glyph, or a symbol)

transferred from a 2D-image to a surface.

Decal

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  • Definition. A set of images designed to represent one or more data attributes.

Earthquake decal-map Water flow decal-map

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  • Definition. A set of images designed to represent one or more data attributes.

Earthquake decal-map Water flow decal-map

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  • Definition. A set of images designed to represent one or more data attributes.

Earthquake decal-map Water flow decal-map

[ Seltzer and Kindlmann, CGF, 2016] [ Praun et al., TOG, 2016]

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  • Focus on aesthetic value

Character editing [de Groot et al., 2013] [Schmidt et al., 2006] [Krassnigg, 2010] Games

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  • First technique using decals for multivariate visualization
  • Stringent requirements in visualization
  • Should be independent of surface parametrization
  • Should not rely on topological information
  • Should be simple and efficient

Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

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Decal-maps: Real-time Layering of Decals on Surfaces for Multivariate Visualization

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  • Sphere Mask: solid sphere intersected with a surface is a disk
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  • Local parametrization (exponential maps)
  • Angular coordinate
  • Radial coordinate
  • Geodesic (difficult and costly to compute)
  • Decals are small: fine distortions not

required [de Groot et al., 2013]

  • Geodesic approximation
  • Euclidean distance
  • Paper discusses two other distances

(Bowers et al, 2010; Geng et al. 2011).

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  • Compute the sphere masking:
  • Area of the surface inside the sphere
  • Build the local parametrization
  • Apply a decal

Local Parametrization

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  • Overview
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  • Overview
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  • Overview
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  • Overview
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Sphere masking Angular coordinate Radial coordinate Decal mapping Decal overlapping

  • Implementation Steps
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Pressure decal-map

Quad-based method [Inspired by Pelt et al., 2014] Decal-based method (our approach)

  • Aneurysm data
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Pressure decal-map

Quad-based method [Inspired by Pelt et al., 2014] Decal-based method (our approach)

  • Aneurysm data
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  • Two case studies
  • Multivariate Geographic Visualization
  • Multivariate Geological Visualization
  • Apply the layering concept on surfaces using decal-maps
  • Represent several attributes in a single view
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  • Attributes
  • Rock type
  • Porosity
  • Water Flow
  • Magnitude and direction
  • Oil Flow
  • Magnitude and direction

Geological Reservoir Model

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  • Minimize the visual interference between attributes
  • Highly exploratory task (design space)
  • Design Guidelines
  • (2D) Scientific Visualization and Information Visualization
  • T. Ropinski, 2011; Borgo et al., 2013; Fuchs and Hauser, 2009;

Kehrer and Hauser, 2013; Munzner 2014.

  • Perceptual Studies for Design [Ware, 2012]
  • Traditional Illustrations
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  • Rock type
  • Categorical data
  • Visual Variables
  • Color, texture
  • Guidelines for 2D Maps
  • Large areas, light tones
  • Base Layer
  • Pastel colormap
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  • Porosity (%)
  • Measures the capacity of

rocks to store fluids

  • Quantitative data
  • Visual variables
  • Position, size, saturation, …
  • Traditional illustration
  • Space between grains

Grain decal

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  • Porosity (%)
  • Measures the capacity of

rocks to store fluids

  • Quantitative data
  • Visual variables
  • Position, size, saturation, …
  • Traditional illustration
  • Space between grains
  • Poisson importance

sampling [Corsini et al., 2012]

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  • Water Flow
  • Direction and magnitude
  • Traditional arrow glyphs
  • Visual Variables
  • Color, shape
  • Size, transparency,

texture, saturation, …

Water flow decal Water flow decal-map

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  • Water Flow
  • Direction and magnitude
  • Traditional arrow glyphs
  • Visual Variables
  • Color, shape
  • Size, transparency,

texture, saturation, …

Water flow decal-map

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  • Oil Flow
  • Direction and magnitude
  • Traditional arrow glyphs
  • Visual Variables
  • Color, shape
  • Size, transparency,

texture, saturation, …

  • Placement Strategy

Oil flow decal Oil flow decal-map

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  • Oil Flow
  • Direction and magnitude
  • Traditional arrow glyphs
  • Visual Variables
  • Color, shape
  • Size, transparency,

texture, saturation, …

Oil flow decal-map

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six attributes!

  • Rock type
  • Porosity
  • Water flow
  • Oil flow
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  • Synthetic Vector Field
  • Illustrative

Flow Visualization

  • Similar to LIC
  • Decal deformation

refer to the paper

Stroke decal

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  • Decals as form of representation for visualization design
  • The concept of decal-map to represent and visualize

multivariate data on surfaces

  • A real-time technique to place a high number of decals on

arbitrary surfaces

  • Concept of layering on surfaces by providing an abstract

framework applicable to a variety of contexts

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Allan Rocha

acarocha@ucalgary.ca rocha.allanc@gmail.com https://ca.linkedin.com/in/rochaallan http://pages.cpsc.ucalgary.ca/~acarocha/

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  • The anonymous reviewers for their constructive

comments.

  • NASA. Socioeconomic Data and Applications Center

(SEDAC) for providing the Earth dataset

  • This research was supported in part by the NSERC/

AITF/ FCMG IRC program in Scalable Reservoir Visualization.

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Interactive Modeling, Visualization & Analytics R&D Group

Allan Rocha, Usman Alim, Julio Daniel Silva, and Mario Costa Sousa