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You may be confusing display-referred and scene-referred image data. 1. Clipping occurs in the scene-referred raw camera sensor pixel data at capture time. 2.
by strogonoff 2y ago
You may be confusing display-referred and scene-referred image data.
1. Clipping occurs in the scene-referred raw camera sensor pixel data at capture time.
2. Raw processing software fills in the highlight by supplying the missing colour information. Often this happens by default.
3. When you obtain a display-referred JPEG, the missing information for clipped highlights was already supplied. Tone curves and other adjustments apply already after highlight reconstruction, making the final result look more organic.
In other words, with modern digital photography processing workflows you will never see any clipping on a histogram for the final JPEG (unless either something went really wrong or it was intentionally done for a look), and it is a poor foundation to make assumptions about what clipping had or had not occurred at capture stage.
What you can safely assume, however, is that a normally exposed digital photo featuring any sun reflections from water or glass will almost certainly have blown highlights.
- pclmulqdq 2y agoWithout the raw image, we won't really know whether there was clipping. However, it is clear that the poster here wanted to remove the highlights and was okay with introducing some information that wasn't in the photo to do it, hence the use of an AI filter. That means that there is no issue with using the clone stamp or the paintbrush tool.
- strogonoff 2y agoThis sounds about right. However, regarding your first sentence, I’d be a bit less cautious: sun reflections from water on a clear day guarantee clipping unless a polarizing filter is used or the scene is dramatically underexposed, and based on the general look of the photo (even knowing it’s after processing) my intuition suggests me that neither took place. Hence my original advice: don’t leave it up to ML when a little forethought can do wonders in terms of preserving information.
- DrewADesign 2y agoWhat are you talking about? I see clipped histograms come out of cameras all the time. I’ve been working with digital images and digital photo manipulation for thirty years. Regardless, it’s not generative AI making up details. The differentiated pixels are there in the camera jpeg even if traditional image processing techniques have to be used to make them visible onscreen. The complete structure of the feathers that isn’t visible in the camera jpeg, for example, is plainly visible just modifying the contrast.
- strogonoff 2y agoSubject domain knowledge mismatch appears to be too strong for further constructive discussion.