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Freshman Imaging Project 2010-11

Freshman Imaging Project 2010-11. Polynomial Texture Maps (PTMs). Pioneered by Tom Malzbender of HP Labs in 2001 Displays an object so the user can control where the light is coming from By viewing an object from different angles of illumination, surface textures become more visible. 

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Freshman Imaging Project 2010-11

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  1. Freshman Imaging Project 2010-11

  2. Polynomial Texture Maps (PTMs) • Pioneered by Tom Malzbender of HP Labs in 2001 • Displays an object so the user can control where the light is coming from • By viewing an object from different angles of illumination, surface textures become more visible.  • Currently, there are many applications of PTMs

  3. PTM Process • HP Labs' software: • PTMFitter • PTMViewer

  4. Pixel colors can be represented numerically • There is a mathematical relationship between pixel color and illumination angle • Knowing color at several angles allows us to predict color at all angles Light source 1 1 Light source 2 2

  5. PTM Fitter and Viewer • PTM Fitter • Creates a models of the variations in color at each pixel • Biquadratic polynomials (6 coefficients) • Minimum of 6 images • PTM Viewer •  Reconstructs lighting angles based on fitted curves

  6. Our Project Goal • Create a basic white light PTM dome by the end of Winter quarter • Create a PTM device using multiple wavelengths of light  • Not exclusively white light

  7. What We Have Accomplished - Proof of Concept Prototype and Miniature -Research and Understanding of PTM devices     -includes contacts -Created work groups including software, camera, illumination/electrical, and structure. 

  8. Software Group • Accomplishments  • Identification and Investigation of LabVIEW software • Understanding of use and benefits of B-Splines • Identification of needed user inputs and outputs  • Have begun to program software and design user-interface

  9. Camera Group • Accomplishments: • Have identified the Camera for basic PTM dome based on research of possible camera specs  • Have learned about the Tone Transfer Function  • Have begun to learn about Modulation Transfer Function  Chosen Camera: Nikon D50

  10. Illumination/Electrical Group • Accomplishments:  •  Have ordered and  • tested lights including  • LEDs, Solux, and  • incandescent • Have learned how to • characterize light by  • luminance, radiance, etc. 

  11. Structure Group • Accomplishments:  • Have orderd a dome for our basic white-light PTM based off of our system requirements  • Have created a CAD drawing of what our white-light PTM will look like   • They have got in contact with the machine shop 

  12. What We Are Going To Do  • Create a multi-spectral PTM device  • Present our work at the Imagine RIT festival in May • Hopefully have a few students travel to DC to compare the PTMs made by our devices to those imaging devices at the Library of Congress • Maybe have students continue work on this project over the summer 

  13. Questions?                             ife2010.wikispaces.com/ Questions?

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