SFI-Photogrammetry, NMHU

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An overview of the photogrammetric workflow and data gathered by New Mexico Highlands University graduates during the fall 2013 semester.

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SFI-Photogrammetry, NMHU

  1. 1. Computational Imaging Photogrammetry Brandi Daw Miles Tokunow Alex Zakharchenko Friday, December 6, 13
  2. 2. What is Computational Photography? “Computational Photography captures a machine-readable representation of our world to synthesize the essence of our visual experience”. -Ramesh Raskar & Jack Tumblin, MIT Photogrammetry Friday, December 6, 13 RTI-Reflectance Transformation Imaging
  3. 3. Photogrammetry is the science of making measurements from photographs (Greek: phot (light) + gramma (something drawn) + metrein (measure) Close range (non-traditional) ground based, <300 meters) Aerial Photogrammetry (traditional) Friday, December 6, 13
  4. 4. Traditional Usages of Photogrammetry Friday, December 6, 13
  5. 5. Georgia O’Keeffe Museum Conservation Department, Dale Kronkright Chief Conservator Conservation is a profession devoted to the preservation of tangible cultural heritage for the future. “In conservation and preservation, computational imaging uses the power of today’s laptop microprocessors and digital cameras to create accurate, archival, 3-D images and documentation for artistic and cultural objects”. -O’Keeffe Imaging Project Blog Post Friday, December 6, 13
  6. 6. Georgia O’Keeffe Museum Conservation • Goal Overarching Goal: Using computational imaging to monitor changes in objects over time. Friday, December 6, 13
  7. 7. Refining the Photogrammetric Workflow Friday, December 6, 13
  8. 8. Stage 2: Two Cameras + Tungsten Lights Friday, December 6, 13
  9. 9. Stage 3: Three Cameras + Flash/LED/Tungsten Friday, December 6, 13
  10. 10. Agisoft-Photoscan Friday, December 6, 13
  11. 11. Friday, December 6, 13
  12. 12. Friday, December 6, 13
  13. 13. Friday, December 6, 13
  14. 14. Friday, December 6, 13
  15. 15. Successful results for a textured & patterned object Flash-less heat and more reliable light quality LED-less hot/more even light /easier set up Friday, December 6, 13
  16. 16. Tungsten lights for monochromatic objects resulted in the best models. Friday, December 6, 13
  17. 17. Computational Processing + Python Photogrammetric files can be exported as: x,y,z/RGB and normal levels Results: depended on computational GPU used Friday, December 6, 13
  18. 18. Future Studies + Direction of Photogrammetry More computational comparisons between data sets Collaboration with computer scientists to determine importance of numerical differences Print 3d models for more user accessibility (patrons of the museum with physical impairments) Gaming Asset Friday, December 6, 13 Museum Interactive Kaiba Gionfriddo became the first person to have his life saved by a 3-D printed device: Doctors at the University of Michigan's C.S. Mott Children's Hospital designed a customized splint that opened his airways and saved his life

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