Raw Therapee: High ISO Wavelet Denoise, Edge Sharpness and Introducing Residual Image.
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- เผยแพร่เมื่อ 5 ก.ย. 2024
- Raw Therapee: High ISO Wavelet Denoise, Edge Sharpness and Introducing Residual Image.
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Patreon Members are provided with a link to download the image used in this video.
In this VERY LONG video we take a 10,000 ISO raw file from an old, notoriously 'shadow-noisy' Canon 1DX Mk1 and carry out wavelet noise reduction and edge sharpening plus a targeted saturation or chromaticity boost using the residual image.
#rawtherapee #wavelets #noisereduction
Noise reduction software has changed rapidly within the last two years.
Per 2023 I send my images through DxO PureRAW 2 and opens the DNG file in ACR/Lightroom with the neutral curve for my camera. The initial result is rather impressive, and much faster, Andy! You can choose to leave the lens sharpening off. When it comes to seriously noisy images, AI has overtaken the somewhat nice results we slowly can build up with the wavelet noise reduction in RawTherapee 5.9. Anybody who tells you different is a ... ;O)
Great explanation of both Denoise and edge sharpness. Thank you Andy again
Another excellent video Andy. Makes the power of RT that much more accessible than it would otherwise be for most folk.
Thanks Graham 🍻🍻
It was long, but absolutely worth the time. You not only show what to do but also tell why to do it or why not. I learn a lot from your teachings!
Cheers Jan 🍻🍻
You are an excellent teacher !
A lot of knowledge combined with humor and self-mockery.
A pleasure to watch and learn.
Thanks !!
Long... yep - but necessary to cover what happens when using certain areas of this program Andy. I know that I'd probably steer clear of most of this program - if not have given up on it - if it wasn't for you and your video tutorials on it. I look forward to seeing what the next iteration of Raw Therapee will be able to do. Thanks again "Prof" 👍
Cheers matey 🍻🍻
Awesome again Andy. That hour didn't seem like it at all. Thank you for persisting to the end. :)
Thank you muchly Peter 🍻🍻
You are extremely talented, as usual :-)
No wonder it takes so much to edit your videos since they are really well crafted, IMHO.
On TH-cam there are plenty of "video tutorials" without even the audio: I am 100% sure they were extremely fast to produce and upload...
Cheers Silvio 🍻🍻
I recorded it Monday lunch time! Funnily enough, it's the audio and the annotation that makes up 90% of the edit time - I edit the audio in Audacity to manually remove most of my breathing noises, but the annotation for this video took about 8 hours. Render time was 2 hours which gave me a 13Gb file, which took 2 hours to compress in Handbrake down to 1.3Gb. Then it took nearly 2 hours to upload that to TH-cam and then nearly 3 hours for YT to render the full HD 1440p version. If I made the vids smaller, 720 or 1080 then the files would upload faster but the edit takes longer with all the zoom cuts so the viewer can see what's happening in full detail.
A fibre connection and a 12 core Mac Pro would speed things up though!
Sure Andy, I made it till the very end of the video without any skipping on the way. And that was well worth it! Thanks a lot.
Awesome, thank you 🍻🍻
Clap Clap Clap for this video, Andy!!!
Thanks Ingo 🍻🍻🍻
Thanks. Very clear and informative.
Thank you Vishy 👍👍
Thats a lot to take in Andy but definately worth it. If this is just the " entry level " I think I'll need a PHD to go onto the more advanced stuff lol. I could certainly see myself using such a workflow for very specific images where I needed absolute control of every aspect of noise reduction and sharpening. There wouldn't be many situations for me personally to go to such lengths however. I do wonder if perhaps RawTherapee would benefit from having basic layers and masking ( I'm assuming it doesn't but I'm largely unfamiliar with the software other than a few brief trials ). This would let users target very specific areas, tailoring NR and sharpening to areas that were high frequency detail or low frequency detail as well luminosity values using luminosity masks. I think it would make for a more flexible workflow rather than the " global ", all be it targeted adjustments we have here. There is no doubt however that the results you show here are vastly superior to that found natively in lightroom. As I've mentioned in past comments I'm currently very smitten with the results I'm getting from Topaz Denoise. I personally use Topaz via Photoshop where I can either just let the software do its thing or I can target areas via masking in the application itself or luminosity masking in photoshop. Incidentally, my workflow starts in LR initially where I use your excellent " process swap " to fully neutralise any crap Adobe force onto the RAW image followed by white balance adjustments. I'll then adjust highlights and shadows just to prevent any clipping, I prefer to do these steps while the file is RAW rather than in PS when it becomes a TIFF. I don't do any futher processing, its straight into PS as a smart object then into Topaz ( they recommend that no pre processing/sharpening or NR is carried out prior to letting Topaz do its magic ). I'd love to see how well Topaz would do with the exact same image as you used here in todays tutorial both on its own and with other tools in photoshop. I'm normally a complete control freak when it comes to post editing, like yourself I want full control over my workflow. I'm finding that whilst I can manually adjust sliders in Topaz to really dial in the look I'm after, it does a marvelous job straight from auto ( oops sorry I just used some bad language there lol ). I'm aware that so often NR programs can just turn images into plastic mush but there is some clever processing going on under Topaz's hood for sure. Thanks again Andy for your always enlightening videos 👍
Cheers!
There's a simplified GUI coming in the next public release, and I'll also do a video on advanced use of standard NR under the details tab soon.
If they start looking at basic layers and masking I'll spit the dummy at them - that's something for a RIP like Ps or Gimp and personally I don't want to see RT heading down the 'one stop shop' route.
There are some localised adjustments in the dev build at the moment so if they make it to v5.9 then theoretically it'll be a bit closer to Lr/CoP
I'll also be doing a video on Topaz so watch this space as they say!
On the same image as in the video Topaz doesn't fair too well - I just did a private video for a patreon member today showing that very thing - it'll feature in the coming video. I'm trying to find out what goes on under the hood in Topaz but I don't know how far I'll get. It does an epic job on some images and not so good on others - you do realise you can run raw files through it and spit out a DNG?
@@AndyAstbury Cheers Andy 😀 I haven't put a raw file directly into Topaz as a stand alone product to date, mainly because I prefer to do things like white balance whilst the file is still raw. I will however give it a try for comparison because it would be interesting to see how Topaz works on the actual raw as apposed to a converted TIFF. Topaz recommend doing exactly that for best results and it might be worth seeing how it handles .NEF files. Nothing to loose given it still outputs a decent .DNG file afterwards, so should still retain lots of post processing editability once its back in photoshop 🙂
Another very informative video, thanks Andy. Question, can (should) I work this way with low noise images or is it not worth the effort? In which other cases would you recommend this type of workflow?
Skip the denoise section and try edge sharpness - and the contrast and other wavelet modules too. You'll be surprised at the improvements you can make with wavelets because it's not just for denoise as my other videos show.
@@AndyAstbury yeah I already use them for contrast and some times for chromaticity, I'm just wondering if I could work exclusively with wavelets because I think it fits me better than the other tools.
Have you ever used upscaling in RawTherapee on any of your photos? I just upscaled a 12MP (Canon EOS 50D) image by a factor of 3 (new size 14256 x 9504 pixels) using the Lanczos method. However, other than by actually having the image printed, I have no idea what the quality of the scaled image would look like. Kind of a catch 22.
I am not certain if there is software that would "simulate" viewing the upscaled image or not. Problem is it is expensive to have a 24X36 inch image printed just for a test. You are quite knowledgeable, maybe this could be a video?
Did a video on it a while back th-cam.com/video/0m_Aa1yR7G8/w-d-xo.html
Can you please show me how to remove blur and double edges on my images using RAW THERAPEE??
Not too sure what you mean Wan. If you could send me an example of the "double edges" fault especially.
@@AndyAstbury I took a picture of it but for some reason I can't upload the image. Do you know a way that I can get you that image?
Hi Wan - take a SCREEN GRAB www.cnet.com/how-to/7-ways-you-can-take-screenshots-in-windows-10/ if you are on a Windows machine, and send it to tuition@wildlifeinpixels.net. You could also send me the raw file if you like so I get a really good handle on your problem.
This video can easily be shortened to like 10min. Please consider editing videos down so it’s more focused on the topic described. Save these hour long full editing flow videos under a different more accurate title.