siggraph 2012 computational plenoptic imaging course - 2 high dynamic range imaging
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SIGGRAPH 2012 Computational Plenoptic Imaging Course - 2 High Dynamic Range ImagingTRANSCRIPT
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
Wolfgang Heidrich
HDR with Standard SensorsHDRI with Standard Sensors
Trading for Temporal Resolution Trading for Spatial Resolution Multiple Sensors Generalized Encodings
Wolfgang Heidrich
Exposure Sequence
Multi-Exposure Imaging:Trading Temporal Resolution
[Debevec & Malik 97]Radiance Map Tonemapped Image
Wolfgang Heidrich
Trading Spatial Resolution:Assorted Pixels
ND filter arrays
Conventional Camera SVE Camera SVE Reconstruction
[Nayar and Mitsunaga 00,Narasimhan and Nayar 05]
Wolfgang Heidrich
Fourier-based Reconstruction
Low dynamic range
Our reconstruction
Ground truth
Low dynamic range
Our reconstruction
Ground truth [Wetzstein et al. 10]
Wolfgang Heidrich
Multiple Sensors
[McGuire et al. 07]
Exposure Sequence & Tonemapped Image
Wolfgang Heidrich
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