siggraph 2012 computational plenoptic imaging course - 2 high dynamic range imaging

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Wolfgang Heidrich Computational Plenoptic Imaging Part 2: High Dynamic Range Wolfgang Heidrich

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SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

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Page 1: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Computational Plenoptic Imaging

Part 2: High Dynamic Range

Wolfgang Heidrich

Page 2: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

High Dynamic Range ImagingSIMULTANEOUSLY VISIBLE DYNAMIC RANGE

CONVENTIONAL CAMERAS

Page 3: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

What is HDR?

http://en.wikipedia.org/wiki/High-dynamic-range_imaging

Page 4: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Commercial HDR Cameras

Grass Valley Viper

Panavision Genesis

Spheron

Page 5: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Commercial HDR Cameras

no pixim

with pixim

no pixim

with pixim

Page 6: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

HDR with Standard SensorsHDRI with Standard Sensors

Trading for Temporal Resolution Trading for Spatial Resolution Multiple Sensors Generalized Encodings

Page 7: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Exposure Sequence

Multi-Exposure Imaging:Trading Temporal Resolution

[Debevec & Malik 97]Radiance Map Tonemapped Image

Page 8: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Trading Spatial Resolution:Assorted Pixels

ND filter arrays

Conventional Camera SVE Camera SVE Reconstruction

[Nayar and Mitsunaga 00,Narasimhan and Nayar 05]

Page 9: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Fourier-based Reconstruction

Low dynamic range

Our reconstruction

Ground truth

Low dynamic range

Our reconstruction

Ground truth [Wetzstein et al. 10]

Page 10: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Multiple Sensors

[McGuire et al. 07]

Exposure Sequence & Tonemapped Image

Page 11: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

General Encodings

[Rouf et al. 11]

Page 12: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

More on HDR Imaging• HDR image / video encoding

• capture, display, tone reproduction

• visible difference predictors

• image based lighting, etc.

Page 13: SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range Imaging

Wolfgang Heidrich

Next Up:Multispectral Imaging