Unbounded High Dynamic Range Photography using a Modulo Camera
We show that with limited bit depth, very high radiance levels can be recovered from a single modulus image with our newly proposed unwrapping algorithm for natural images.
Project Description

Unbounded High Dynamic Range Photography using a Modulo Camera

Hang Zhao1    Boxin Shi1,3    Christy Fernandez-Cull2    Sai-Kit Yeung3    Ramesh Raskar1

1 MIT Media Lab    2MIT Lincoln Lab    3SUTD

ICCP 2015, Houston, TX   [Best Paper #2]

Modulo_teaser

Abstract

This paper presents a novel framework to extend the dynamic range of images called Unbounded High Dynamic Range (UHDR) photography with a modulo camera. A modulo camera could theoretically take unbounded radiance levels by keeping only the least significant bits. We show that with limited bit depth, very high radiance levels can be recovered from a single modulus image with our newly proposed unwrapping algorithm for natural images. We can also obtain an HDR image with details equally well preserved for all radiance levels by merging the least number of modulus images. Synthetic experiment and experiment with a real modulo camera show the effectiveness of the proposed approach.

Keywords

  • High Dynamic Range (HDR) Imaging
  • Modulo Camera

Files

  • Technical Paper: [PDF]
  • Poster: [PDF]
  • Slides: [Coming Soon]
  • Video: [Coming Soon]

Acknowledgments

We would like to acknowledge Brian Tyrrell, Thomas Gardner, Julio Estrada, Amit Agrawal and Zhen Xie for their valuable insights and help.

More information can be found in Hang Zhao’s homepage: http://web.media.mit.edu/~hangzhao

Project Details