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14 Messages

 • 

366 Points

Tue, Jun 2, 2020 8:14 AM

6

Ability to mass-delete faces in Face Detection on Lightroom

I've just started to venture into Face Detection within Lightroom Classic.

Having watched the initial video on how to do it I needed some details and the technician on the chat confirmed that I wasn't missing a trick - simply Lightroom doesn't do some things I need. This is post two of two to raise these issues.

I'm a wedding photographer. I have all my weddings in one catalog along with sporting events I've done, seminars, and my family photos. There's over 128,000 images

This week-end I've been investigating Face Detection. Do you realise how long it takes to detect faces on that many images when there's lots of "crowd" in the background? Four days on and my brand-new-this-year-highly-specced-PC is still on its knees doing the job.

Now the problem isn't letting the faces get detected it is deleting the stuff one doesn't want.

I asked about turning on Face Detection and turned it on for the catalog but that means that every image needs to get checked. The result is that 128,000 images are scanned.

I only wanted to detect faces in reality for my family photos. I don't want to be detecting brides and grooms to tag them. All I care about is finding my favourite photos of my family.

On one drive I've got 22,114 images and 324 named people as a result.
On the other drive I've got 106,590 images and 3144 named people.

You can imagine how many "Unnamed People" are in each of those drives. Tens of thousands and rising as the scan continues.

I completed tagging people in my family by selecting the folders with the family photos in - but the rest are simply "in the catalog" and as it is a toggle for the catalog that's what I have to do.

Having 35,000 images (for example) and trying to select them all to hit backspace and remove them from the unnamed list just brings Lightroom to "not repsonding" mode.

Leaving them there and having them present in the unnamed list is not helpful either - because as I add new family photos I can't quickly tag individuals.

As I do a new wedding dozens of new "unnamed people" will get added.

All of which brings me to two thoughts.
1) allow scanning only of particular folders and not the whole catalogue - to avoid having to scan images that one doesn't want to identify at all being scanned.
2) have a button or menu item to "remove all other Unnamed People from the current list" because you've no idea how long this is going to take me to remove all these Unnamed People now and tidy my catalog up again!

Responses

139 Messages

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2.9K Points

4 months ago

Mark, There will also be many many images where LR has missed faces ... it's a rather poor implementation

14 Messages

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366 Points

Gary, that wouldn't surprise me! :-/

544 Messages

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11.8K Points

4 months ago

Mark, regarding item 1). You can sort of do this already. In other words, Face detection is always turned off for me and I activate it by hitting O whenever I'm in a given folder or collection. As long as I escape from People view, scanning stops. Basically, I always have my catalog in a paused state; when one hits O(to enter People view), although it says "Pause", it's actually scanning in the background while in People view. I've always found this confusing but that Face Detection button is for the entire catalog. 

14 Messages

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366 Points

Jerry, that "paused" thing gets me confused too. Until the week-end I had never enabled or even looked at Face Detection. I watched the guidance video and turned it on for the catalog and watched it go. It seems to have finished if I look at my main folder of images - but my archive on a NAS is only about a third through after several days work.

The chat with the technician the other night said I should let it run to conclusion which is annoying but at least it will be done. The implication of what he said was that if I don't let it run to conclusion it will always be trying to finish and will slow my catalog down.

The implementation seems filled with confused elements that might work on small test cases but when scaled to real-world use appear, to me, to be flawed.

544 Messages

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11.8K Points

They don't know what they're saying half the time I'm afraid. I do not believe it needs to run to completion on an entire catalog as it's a waste of resources because I think that you are like me, in the sense that you want it on selected folders/ collections. I've done it this way for years and have not un-paused it to scan my entire catalog(this way it's never trying to finish because I don't want it to) since. I may be wrong in my method but I'd leave it for someone else to correct me. I suppose you've already spent days on this but I would turn it off when you're done. Even Julieanne Kost in the official video tutorial has hers 'Paused' and activates it when it's needed - https://helpx.adobe.com/uk/lightroom-classic/help/face-recognition.html

14 Messages

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366 Points

They don't know what they're saying half the time I'm afraid.
Quite possibly. I was at pains to try to get clarity on my question but it was an uphill struggle.

What's really a problem now is that I've got tens of thousands of "Unnamed People" sitting there in the view and I can't easily get rid of them. It's going to take me weeks to take the "Unnamed People" down from ... what it it... 42,000 + 32,500 and counting that are there currently.

I'm incredibly frustrated that I've gone to check detail with them and the advice they have given me is this poor.

544 Messages

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11.8K Points

Are you sure it will take that long? I've just tested: selected 12,000+ Unnamed for fun. After I selected and hit delete, it happened within a second. The user experience is terrible though. Scrolling through was laggy. Shift + Select(ing) was also unpredictable as I watched the spinning beachball on the first attempt. After switching programs for a second and switching back to LR Classic, it sorted itself.

The second batch of 10,000 froze for a second but made its selection and I was able to hit Delete. In both cases, as long as the batch was selected, it was cleared in about a second. I would put up with the struggle of making the selection and hit delete on the lot if I were you.

Of course, my experience is relative but give it a go.

14 Messages

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366 Points

Yup, I'm positive it will take a long time.

I just selected the first of the items on my "Unnamed People" list in a folder with 106,590 images (my archive). I then used the scroll bar to whizz down to the bottom and shift+select the last one of 41,736 unnamed people.

Then I went to have a cup of tea.

I'm back again and "Library (Not Responding)" is showing.

That's been the behaviour each time I've tried. Lightroom was the only program open on the desk (until I opened my email and now this browser to reply).

I'm going to give it another half an hour to see if it responds but my experience is I'm going to have to kill off the task in Task Manager.