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Hdr Panoramic Photography

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My presentation from PhotoCampHouston on HDR Panoramic Photography on January 24, 2009 at the Houston Technology Center.

My presentation from PhotoCampHouston on HDR Panoramic Photography on January 24, 2009 at the Houston Technology Center.

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Transcript

  • 1. HDR Panoramic Photography
  • 2. Introduction
    • Houston
    • Texas A&M University
      • Studied Architecture and Visualization Sciences
    • IT Consultant
    • Architectural Photographer
    • @dvmorris
    • dvmorris@gmail.com
    • http://dave.showviz.net/
    • http://topmod3d.org/
  • 3. HDR Photography
    • Set of Techniques with origins dating back to 1850s
    • Allows greater ranges of luminance between light and dark areas of an image
    • Achieve details in the highlights and shadows of an image at the same time
  • 4. Under and Overexposed Images
  • 5. Viewing Problem
    • Traditional screens (CRTs, LCDs) and printers display a low dynamic range (LDR) of luminance (300 levels)
    • Human eyes have a high dynamic range of luminance detection (50,000 levels)
    • We don’t have a good way to view real HDR images (yet)
  • 6. Tone Mapping
    • Until display and print technology catches up we have to map HDR images to LDR images
    • Global and local algorithms
    • Tries to balance strong contrast reduction and image details in shadows/highlights
  • 7. Tone Mapping Demo
  • 8. Panoramic Photography
    • Elongated field of view (160° x 75° or greater)
    • Techniques dating back to 1850s
    • Rotate camera about the nodal point
      • the optical point from which the focal length is measured
    • Eliminate parallax
  • 9. Panoramic Photography
    • Gigapan.org
  • 10. Panoramic Photography
    • Xrez.com
  • 11. Panoramic Photography
    • Me
  • 12. Panoramic Photography
    • Me
  • 13. Panoramic Photography
    • Me
  • 14. HDR Panorama Demo
    • Stuff
      • DSLR Camera with manual settings (and AEB!)
      • IR Remote Control
      • Tripod
      • Nodal Ninja
    • Software
      • Autodesk (REALViz) Stitcher
      • Photomatix HDRSoft
      • Bulk Rename Utility
  • 15. Other Tools
    • Paid HDR Software
      • Photomatix, Dynamic Photo HDR, Enfuse for Lightroom
    • Open Source HDR Software
      • Qtpfsgui, Picturenaut, FDRTools Basic, Essential HDR
    • Paid Panoramic Software
      • Autodesk Stitcher, PTGui, Photoshop
    • Open Source Panoramic Software
      • Panotools, PTStitcher
  • 16. Questions?