Response Curve Database for HDR Imaging Applications

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Response Curve Database for HDR Imaging
Applications

• Insert Product Photograph Here

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Overview

• Provide a web interface to collect response
  curves of different cameras and use them to deal
  with High Dynamic Range Image Processing and
  Manipulation

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Curve Recover

• Use several images and the method described in
  Recovering high dynamic range radiance maps from
  photographs by Debevec 97 to recover the
  response curve.

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Curve Recover contd

• Interface

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Curve Recover contd

• Results

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Applications for nowLDR-gtHDR

• Convert a single LDR Image to a HDR Image if the
  Cameras Curve is in the Database

The image shown here is compressed to display on
the screen.
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Applications HDR-gtLDR

• Based on the HDR radiance map we created, we can
  apply another cameras response curve to convert
  the radiance map back to 8-bit or 16-bit LDR
  images and see the difference.

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Applications HDR-gtLDR

• FUJIFILM FinePix S5500 Curve

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Applications HDR-gtLDR

• RICOH GR Digital Curve

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Applications HDR-gtLDR

• NIKON D70s Curve

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Specifications

• Code Written in Python with PIL (Python Imaging
  Library) and NumPy
• Apache 2.2.2 (Unix) mod_python 3.2.10 Running
  on my Laptop

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Links

• Current Status
• http//lunastorm.dyndns.org8080/python/interface.
  py