kent_lytle's profile

2 Messages

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80 Points

Wed, May 20, 2020 3:19 AM

Photoshop: Applying Oil Paint filter to 100 Megapixel images

I need to apply the Oil Paint filter to file sizes in excess of 100 Megapixels.
Currently, the filter has no discernible effect on images of this size.

Does anyone know:
• How I can accomplish this?
• Anyone who might know how to accomplish this?
• Any workaround solutions that might accomplish this?

If not, does anyone know if or how I can work with Adobe to accomplish this?

If not, does anyone know a software engineer familiar with algorithms like this that I can hire to write a custom program to accomplish this?

This is an extremely vital need I have for a very specific long-term project I am going to accomplish.

Thank you for any insight you can offer.

Responses

126 Messages

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2K Points

1 y ago

I'd suggest windowing the large image.  In other words break the large image in a number of overlapping smaller windows, then process each small window with the Oil Paint filter, and then merge it back together.  I would expect you might have to overlap by 50% so that when you merge they will blend reasonably well.  Blending the smaller one will be the biggest chore.  The size of the small windows is probably dictated by the maximum size you can get good results from the Oil Paint filter.
Holler if you wish to discuss further.
RONC

19 Messages

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334 Points

1 y ago

There is a paint effects program called Dynamic Auto Paint Pro that acknowledges that the intensity of the effect has to suit the viewing or print size of the image and I seem to remember it offers sophisticated settings to accomplish this.

Obviously this means using the oil paint effects provided by them. The program is unique in that it doesn't just overlay an effect but redraws the image in multiple layers from scratch. It is fascinating to watch!

Anyway, worth a look maybe? Can't remember the software company.

Adobe Administrator

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15.9K Messages

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296.4K Points

1 y ago

It seems to work fine for me on an image that is 9000px 13000px. Do you have the "Preview" checkbox turned on in the Oil Paint dialog to show the results on canvas?

What are the pixel dimensions you are trying to apply to? 

Champion

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1.7K Messages

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29.8K Points

1 y ago

Works fine for me on images of that size. You might need to zoom in to see the effect...

126 Messages

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2K Points

1 y ago

Maybe that Kent what broader strokes which is not what I addressed above.  If he wanted broader strokes, He might subsample to a smaller size, run the oil paint filter, and then resample to the original size.  The increase in stroke should tell how much to subsample.
RONC

2 Messages

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80 Points

1 y ago

I phrased my question incorrectly. The Oil Paint filter does have an effect on images of 100 Mb and larger.

I am not sure how to describe what I am asking in words but here it is in actions:

Take a 300 Mb image, make a copy of the image and size it down to just 3 Mb. Apply the Oil Paint filter to both images. I need the Oil Paint effect to appear across the large image similarly to how it appears across the small image.

Reducing a 300 Mb image to 3 Mb, applying the Oil Paint filter, then up-sizing back to 300 Mb leaves me with a very (unacceptably) soft image that no sharpening trick, app, or tool I have found can fix.

Dividing the image into small pieces, applying the filter to each small piece, then stitching the pieces back together is not practical as there is no way to visualize the effect across the entire image and, essentially, there would be 100 individual pieces to stitch back together.

Thank you for any insights you can provide,
KL

126 Messages

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2K Points

1 y ago

Kent,

My first question is how are you viewing the large image?  At 100% or print sized?

When looking at this before oil painting does it have the character as the small one that looks good?  Is it as high frequency in space?  Or does it have a lot of open space like it needs sharpening a lot? 

How did you make the image so big?  Did you merge a number of normal camera sized images or did you resize?

I can't visualize you image to understand what you need?  Can you get me the file to see for my self?

On resizing, I wasn't thinking of a factor of 10 in each direction but more like 2 or 3.

Unless we can view what your situation is, we are just taking stabs in the dark.

Regards,
RONC  

19 Messages

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334 Points

1 y ago

Using a small image is not the answer as you've found. I don't know what this oil paint filter is or what control you have but intuition tells me that to create the effect visible on a large image you need less effect and for an image to be viewed on a screen, the effect has to be exaggerated to be seen.

As I said, DAP by MediaChance acknowledges this and allows you to decide what is appropriate for each output size. 

126 Messages

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2K Points

1 y ago

Breaking into smaller windows of say 50 or 100,000 pixels, running oil paint on each, and using the panorama merge probably will handle it.  I'm still not sure what the problem is though.

RONC