Difference between tone mapping and exposure fusion

[David Xu]

Could someone explain the difference between the tone mapping and exppsire, and when to use them?

Thanks!

David

[Philip Chong]

Hi. I don't do any of those you mention, I do "manual exposure blending" using luminosity masking.  This is the best method but hard to master. 

[David Xu]

Yes, I do use TK action luminosity mask extensively.  After stitching and before exporting a file, one could adjust light/dark and contrast within PTGUI… please see the following manual.

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[PTGui Support]

Hi David,

Expsure Fusion takes a set of bracketed images and combines them into a
single 'well exposed' image. It will combine the best exposed areas from
each source image: shadows from the longest exposure and highlights from
the shortest exposure.

Tone Mapping needs a HDR image first. This is created by combining
bracketed images into a single image with a high dynamic range. Tone
Mapping then brightens the shadows and darkens the highlights to get an
image suitable for display.

They are different algorithms with different looking results. And one
difference is that exposure fusion does not create an intermediate HDR
image.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

[David Xu]

Really helpful. Thanks!

David 

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