Lightroom/Camera Raw: Automatic scratch and dust removal

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Many DSLRs have the capability to produce reference photos that can be used to remove sensor dust. For example, Nikon.

In addition, good film scanners have an infrared channel (Digital Ice) that programs like Vuescan can save as a separate grayscale image showing where all the dust and scratches are.

It would be simplify the workflow, and possibly improve results (if done right) if Photoshop/ACR/LR could make use of the DSLR reference photo or the Vuescan Infrared image to remove dust and scratches automatically.
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Photographe

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Posted 8 years ago

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Rob Cole

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Good idea, since having a white background in the reference photo allows the code to isolate only the affected pixels.

You may also be interested in this idea to better handle the case with no reference photo:
http://feedback.photoshop.com/photosh...
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Photographe

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Rob, if I understand it right, your other idea requires you to first identify all of the dust spots (which I suppose it would be best to do with a reference photo against a white background), remove them with the dust removal tool and then sync the changes to the other photos. I agree with you that would be quite a chore for a number of reasons, not least of which is the one you mentioned.

I wonder whether there are any third party RAW converters that do this automatically.

For the slide scanners, I am aware of only one program that can make use of the infrared info AFTER the scan is complete--VUESCAN from Hamrick Software--all of the others (Digital ICE/ Canon FARE) do it at the time of scanning only forcing you to commit to the level of removal you want.
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Rob Cole

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See comment in other thread (if you haven't already): http://feedback.photoshop.com/photosh...
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Siegfried Wohlgemuth

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This reply was created from a merged topic originally titled Autoamtic dust removal tool.

There are many post to this idea but adobe is sleeping - good morning!
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jim Jua

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This reply was created from a merged topic originally titled LIGHTROOM: Automatically scan for and remove dust spots..

Removing dust spots from photos is the most delirium inducing task photographers have to do. From a programmer's perspective, the dust spots are quite uniform in size and color, they have a faint distinguishable edge, and there should be no problem writing a function to identify them all on the photo, remove, and then allow the removal to be applied to all the photos in the batch. Job done!
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Marc Hohenleitner

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This reply was created from a merged topic originally titled Autoamtic dust removal tool.

Hi, please consider an automatic dust spot removal tool. We can visualisize the spots but we have to apply the healing brush on each spot separately. I think an automation of this tool would save a lot time in postproduction! But please with the ability to re-edit the automatic selection.
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David Opland

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This reply was created from a merged topic originally titled LIGHTROOM: Automatic Removal of Dust Specks.

I don't see the means to easily remove dust specks from scanned photographs in Lightroom 5 beta. Please consider adding this feature to the future release.
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Ope Gato Cedo

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This reply was created from a merged topic originally titled Lightroom: Add a New Effect to Remove Dust and Scratches from Object Surfaces.

I recently did a lot of product macro photography. Here I usually have some dust left on mirroring surfaces. So it is part of a workflow, where I have annoyingly switch to Photoshop and back to Lightroom.

- I have to work on the dust as one of the final steps, because first I have to fix the exposure and all lights before I see where I have to remove durst and where i is not visible.
- If I later find some issues with the lighting and adjust them in Lightroom, I have to do all the dust removing work in Photoshop again.

Therefore I suggest a new "Effect" in Lightroom which is basically the "Remove Dust&Scratches" filter from Photoshop. It is important that this filter can be combined with masks, because of the resulting blur, I only want to apply it on flat surfaces where the blur is not visible.

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Valentine Solodin

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This reply was created from a merged topic originally titled Automatic dust cleaning without losing details.

I want to suggest an automatic dust removing feature for your programs.

The idea is simple:
1) scan the same photo twice with rotating it (in scanner) by 180° second time, or simply with moving it a little;
2) align image contours of those two scans;
3) combine scans using darker pixels of two images.

This will eliminate white spots on scanned images made by dust.
The result will look like this:
dust cleaning

As you can see, almost all dust has vanished, without losing details.

The images should be aligned in a same way as Photomerge does with panoramas, but please note that images will not match in all areas, because of roughness of paper or irregularity of scanner's movements.
Therefore, contours should be aligned in several areas of image independently.

Also please note that I have suggested this feature to other companies as well, for free of course.
And thank you for quality programs.