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Fedor Morozov 2013-08-06 18:13:34 +04:00
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modules/photo/doc/hdr_imaging.rst
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HDR imaging
==========
=============
.. highlight:: cpp
This section describes high dynamic range imaging algorithms, namely tonemapping, exposure alignment, camera calibration with multiple exposures and exposure fusion.
This section describes high dynamic range imaging algorithms namely tonemapping, exposure alignment, camera calibration with multiple exposures and exposure fusion.
Tonemap
---------------------------
.. ocv:class:: Tonemap : public Algorithm
Base class for tonemapping algorithms - tools, that are used to map HDR image to 8-bit range.
Base class for tonemapping algorithms - tools that are used to map HDR image to 8-bit range.
Tonemap::process
---------------------------
@ -280,6 +280,8 @@ MergeMertens
Pixels are weighted using contrast, saturation and well-exposedness measures, than images are combined using laplacian pyramids.
The resulting image weight is constructed as weighted average of contrast, saturation and well-exposedness measures.
The resulting image doesn't require tonemapping and can be converted to 8-bit image by multiplying by 255, but it's recommended to apply gamma correction and/or linear tonemapping.
For more information see [MK07]_.
@ -301,27 +303,27 @@ Creates MergeMertens object
.. ocv:function:: Ptr<MergeMertens> createMergeMertens(float contrast_weight = 1.0f, float saturation_weight = 1.0f, float exposure_weight = 0.0f)
:param contrast_weight: contrast factor weight
:param contrast_weight: contrast measure weight. See :ocv:class:`MergeMertens`.
:param saturation_weight: saturation factor weight
:param saturation_weight: saturation measure weight
:param exposure_weight: well-exposedness factor weight
:param exposure_weight: well-exposedness measure weight
References
==========
.. [DM03] F. Drago, K. Myszkowski, T. Annen, N. Chiba, "Adaptive Logarithmic Mapping For Displaying High Contrast Scenes", 2003.
.. [DM03] F. Drago, K. Myszkowski, T. Annen, N. Chiba, "Adaptive Logarithmic Mapping For Displaying High Contrast Scenes", Computer Graphics Forum, 2003, 22, 419 - 426.
.. [FL02] R. Fattal, D. Lischinski, M. Werman, "Gradient Domain High Dynamic Range Compression", 2002.
.. [FL02] R. Fattal, D. Lischinski, M. Werman, "Gradient Domain High Dynamic Range Compression", Proceedings OF ACM SIGGRAPH, 2002, 249 - 256.
.. [DD02] F. Durand and Julie Dorsey, "Fast Bilateral Filtering for the Display of High-Dynamic-Range Images",2002.
.. [DD02] F. Durand and Julie Dorsey, "Fast Bilateral Filtering for the Display of High-Dynamic-Range Images", ACM Transactions on Graphics, 2002, 21, 3, 257 - –266.
.. [RD05] E. Reinhard, K. Devlin, "Dynamic Range Reduction Inspired by Photoreceptor Physiology", 2005.
.. [RD05] E. Reinhard, K. Devlin, "Dynamic Range Reduction Inspired by Photoreceptor Physiology", IEEE Transactions on Visualization and Computer Graphics, 2005, 11, 13 - 24.
.. [MM06] R. Mantiuk, K. Myszkowski, H.-P. Seidel, "Perceptual Framework for Contrast Processing of High Dynamic Range Images", 2006.
.. [MM06] R. Mantiuk, K. Myszkowski, H.-P. Seidel, "Perceptual Framework for Contrast Processing of High Dynamic Range Images", ACM Transactions on Applied Perception, 2006, 3, 3, 286 - 308.
.. [GW03] G. Ward, "Fast, Robust Image Registration for Compositing High Dynamic Range Photographs from Handheld Exposures", 2003.
.. [GW03] G. Ward, "Fast, Robust Image Registration for Compositing High Dynamic Range Photographs from Handheld Exposures", Journal of Graphics Tools, 2003, 8, 17 - 30.
.. [DM97] P. Debevec, J. Malik, "Recovering High Dynamic Range Radiance Maps from Photographs", 1997.
.. [DM97] P. Debevec, J. Malik, "Recovering High Dynamic Range Radiance Maps from Photographs", Proceedings OF ACM SIGGRAPH, 1997, 369 - 378.
.. [MK07] T. Mertens, J. Kautz, F. Van Reeth, "Exposure Fusion", 2007.
.. [MK07] T. Mertens, J. Kautz, F. Van Reeth, "Exposure Fusion", Proceedings of the 15th Pacific Conference on Computer Graphics and Applications, 2007, 382 - 390.