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

Wolfgang Heidrich

Computational Plenoptic Imaging

Part 2: High Dynamic Range

Wolfgang Heidrich

Wolfgang Heidrich

High Dynamic Range ImagingSIMULTANEOUSLY VISIBLE DYNAMIC RANGE

CONVENTIONAL CAMERAS

Wolfgang Heidrich

What is HDR?

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

Wolfgang Heidrich

Commercial HDR Cameras

Grass Valley Viper

Panavision Genesis

Spheron

Wolfgang Heidrich

Commercial HDR Cameras

no pixim

with pixim

no pixim

with pixim

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HDR with Standard SensorsHDRI with Standard Sensors

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

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Exposure Sequence

Multi-Exposure Imaging:Trading Temporal Resolution

[Debevec & Malik 97]Radiance Map Tonemapped Image

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Trading Spatial Resolution:Assorted Pixels

ND filter arrays

Conventional Camera SVE Camera SVE Reconstruction

[Nayar and Mitsunaga 00,Narasimhan and Nayar 05]

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Fourier-based Reconstruction

Low dynamic range

Our reconstruction

Ground truth

Low dynamic range

Our reconstruction

Ground truth [Wetzstein et al. 10]

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Multiple Sensors

[McGuire et al. 07]

Exposure Sequence & Tonemapped Image

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General Encodings

[Rouf et al. 11]

Wolfgang Heidrich

More on HDR Imaging• HDR image / video encoding

• capture, display, tone reproduction

• visible difference predictors

• image based lighting, etc.

Wolfgang Heidrich

Next Up:Multispectral Imaging