TienDaiIFHDR

Project Title

Image Fusion for High Dynamic Range/ All-in-focus Applications

Introduction

Scenes with highly varying lighting conditions and significant spatial depth cause problem in imaging that not all the information contained in these scenes could be captured by one image.

Dynamic range of a scene is defined as the ratio of the highest to the lowest luminance. The real world scenes often have a very wide range of luminance ( Fig. 1 ), sometimes exceeding 10 orders of magnitude. To reproduce these scenes presents a challenge for conventional digital capture and display devices, which suffer a limited dynamic range of only 2 orders of magnitude. Radiance maps [1, 2], obtained by merging a sequence of low dynamic range ( LDR ) images of the same scene taken under different exposure intervals ( Fig. 1 ), are able to record the full dynamic range of the scene in 32-bit floating-point number format. However, LDR reproduction media such as CRT monitors and printers are usually only 8-bit per channel. Tone Mapping or Tone Reproduction is the process to compress the dynamic range of the radiance maps to fit into that of the display devices, while preserving as much of visibility and visual contrast as possible.

Methods

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Results

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Conclusions

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References

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Appendix I - Code and Data

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Appendix II - Work Partition

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