Computational Imaging Photogrammetry
Brandi Daw Miles Tokunow
Alex Zakharchenko
Friday, December 6, 13
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
RTI-Reflectance Transformation ImagingPhotogrammetry
Friday, December 6, 13
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
Traditional Usages of Photogrammetry
Friday, December 6, 13
Georgia O’Keeffe Museum
“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
Conservation is a profession devoted to the preservation of tangible cultural heritage for the future.
Conservation Department, Dale Kronkright Chief Conservator
Friday, December 6, 13
Georgia O’Keeffe Museum Conservation
• Goal
Overarching Goal: Using computational imaging to monitor changes in objects over time.
Friday, December 6, 13
Refining the Photogrammetric Workflow
Friday, December 6, 13
Stage 2: Two Cameras + Tungsten Lights
Friday, December 6, 13
Stage 3: Three Cameras + Flash/LED/Tungsten
Friday, December 6, 13
Agisoft-Photoscan
Friday, December 6, 13
Friday, December 6, 13
Friday, December 6, 13
Friday, December 6, 13
Friday, December 6, 13
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
Tungsten lights for monochromatic objects resulted in the best models.
Friday, December 6, 13
Computational Processing + PythonPhotogrammetric files can be exported as:x,y,z/RGB and normal levels
Results: depended on computational GPU used
Friday, December 6, 13
Future Studies + Direction of PhotogrammetryMore computational comparisons between data setsCollaboration with computer scientists to determine importance of numerical differencesPrint 3d models for more user accessibility (patrons of the museum with physical impairments)
Gaming Asset
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
Museum Interactive
Friday, December 6, 13
Top Related