Preprocessing step for a set of images taken under different illuminations.
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kittisak phetpan
on 8 Feb 2021
Edited: kittisak phetpan
on 13 Mar 2021
Hi Guys!
I have a set of images taken under different illuminations. In order to manipulate for the uniform intensity, do you guys have any suggestions about the preprocessing step?
Thank you.
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Image Analyst
on 21 Feb 2021
You need to have something in your image that is the same from photo to photo, like an X-rite Color Checker chart or some other kind of standard. Then it depends on if there is a color shift or merely a brightness shift. The easiest thing is if there is just a brightness shift. Then you can just multiply by the ratio of the standard values in each image to scale the test photo to match the reference photo. See attached tutuorial for more info.
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