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B.06 Research and Teaching in Graphics Christoph M. Hoffmann, PI Research Team: John Turek, Vet Richard Borgens, Vet Paul Robinson, Biol Elisha Sacks, CS, Viz Ctr C. Bajaj, CS, Texas J. Peters, CS, Florida The Situation in early 1997 Predominantly Sun and SGI workstations

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B 06 research and teaching in graphics l.jpg

B.06Research and Teaching in Graphics

Christoph M. Hoffmann, PI

Research Team: John Turek, Vet Richard Borgens, Vet Paul Robinson, Biol Elisha Sacks, CS, Viz Ctr C. Bajaj, CS, Texas J. Peters, CS, Florida


The situation in early 1997 l.jpg
The Situation in early 1997

  • Predominantly Sun and SGI workstations

  • Graphics synonymous with SGI

  • PCs perceived as low-end word processor and spread sheet tools

  • Our colleagues swore by Unix

  • Intel stock in $15 - $20 range


Teaching lab cs 175 l.jpg
Teaching Lab (CS 175)

(Hoffmann)

  • 1997: Eight graphics PC, a server

  • Hosting CS 435, Undergraduate Graphics

    • 1997 – using J++

    • 1998 – and beyond: using OpenGL and Glut


Summary pc graphics l.jpg
Summary: PC Graphics

  • In 1997, a radical suggestion

  • Today, an accepted reality:

    • Students increasingly on PCs

    • Work also on their own machines

    • Competent, well-priced hardware


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Research

  • Mechanism Analysis (Sacks)

  • Situation Awareness (Hoffmann)

  • Extra-Cellular Matrix (Robinson)

  • Cristal Lab (Turek)

  • Other projects

    • Image analysis and model extraction

    • Animating algorithms for teaching

    • Parametric design, and more


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Mechanism Analysis (Sacks)

  • Configuration space analysis of mechanisms with intermittent contact (C-space)

  • Highly visual

  • Identifies why a design works or doesn’t

  • Applications:

    • MEMS

    • Automotive

    • Consumer goods


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Geneva Mechanism

Intermittent motion:

C-space diagrams show why bottom designs fail


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MEMS Applications

Weapons assurance device:

C-space eliminates build-and-bust approach used before


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Automotive Applications

Automatic transmission analyzed for Ford


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Consumer Goods Application

Film advancement mechanism analyzed for Fuji


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Situation Awareness (Hoffmann)

  • Visualization and motion of large numbers of platforms

  • Geometric analysis to extract mission critical information

  • Pre-attentive information presentation to military decision makers




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Extracellular Matrix (Robinson)

  • Collagen matrix that hosts the cells

  • Special tissue synthesis

  • Confocal imagery to analyze tissue



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Lab axis transform

John TurekChandrajit Bajaj, Richard Borgens

Core Laboratory for Image Analysis & Multidimensional Applications: Division of the Purdue Center for Image Analysis & Data Visualization

Basic Medical Sciences

School of Veterinary Medicine


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Research axis transform

  • Implementation of a multiresolution client-server environment for fast navigation and search of high-resolution image databases (JJ Turek, CA Bouman-Electrical and Computer Engineering)

  • 3D visualization and quantification of the effects of IGF-1 on the morphology of chick embryo leg muscles. (J McCleerey; IU School of Medicine, JJ Turek, P Mitchell, K Hannon; Basic Medical Sciences)

  • Analysis of hair texture as a corollary to health using scanning electron microscopy and wavelet decomposition analysis. (JJ Turek)


Slide19 l.jpg

Predictive pre-fetching axis transform

Increase/decrease

region in the wavelet

resolution

domain

Buffered

client data

X-Y translation

within image

database

Server

Viewed image

image

on client

data

Model of dynamic navigation and browsing of high-resolution image database via pre fetching and warping-decompression


Slide20 l.jpg

95% axis transform

Visualization of

metadata

attributes using

Bayesian

probability estimates to locate

desired image features

5%

Fast

metadata

visualization

performed prior to full

resolution search and

Example

feature extraction

Region

Metadata

Full resolution

search

extraction

Sample

region

Metadata visualization as an aid to searching a high-resolution image database on server

found in

search


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In Conclusion axis transform

  • Equipment put to good use

  • Important support for our teaching and research

  • Would like to ask you again…


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