Thanks for watching! Please subscribe and like if you haven't already. It helps the channel grow and means a lot to me. Hit the bell notification for new videos as they come out! Clear skies!
Great stuff. Noise was the thing that eventually forced me to make the jump from Siril to PixInsight, because the noise reduction in Siril never really seemed to do anything. And this tutorial was a great start. I'll still check out some of the other methods, and test it out on a few more images to see which work best for me, but I'm definitely liking TGV so far.
Great tutorial. I've tried MLT and MMT in linear stage before, with noticeable improvement. But then I tried this approach to TGVDenoise and it just SMOKED every thing I've tried prior. Stretching further to reveal faint details became so painless. Thanks for posting this.
Shawn. Thanks for that, absolutely the best explanation of TGV that I have come across. Just tried it on my current image (NGC300 in LRGB) and very happy with the results. Noise reduction has been the bane of my existence, especially with galaxy images) and I think this will help enormously.
Great video Shawn - I've used TGV denoise and other noise reduction scripts in PI and will definitely go back and re-visit this one - with your great tips and suggestions!
Hi Shawn, I use TGV denoise a lot but I haven't tried it with the mask and changing the settings to values indicated by the Statistics script. Thanks for another informative video, I will try this new method (for me). I do find it a balancing act between denoiseing then sharpening parts of the image which introduces noise back into it. Oh well, still learning.....
Yes it can be tricky. Always use your luminance image for resolution and sharpening. Use masks as much as possible. Sometimes its a balance that is needed.
Thanks for another great video. TGVDeNoise is a very powerful tool. I typically run the linearmask noise reduction process from one of your earlier videos. However, there are some datasets where it does not do well. My image set of Bode's Galaxy is a good example, just could not find a setting/configuration with LNRMsk that did not result in a very splotchy background, almost pixelated. Part of the problem in LnrMask, I believe, was the mask - very inconsistent when reviewed in the preview for no reason I could discern despite multiple attempts. TGVDeNoise, following your process here, gave a very satisfactory result.
I've learned such a great deal from your video's! I'm understanding Pixinsight better and better, and see my images develop enormously! Many thanks from The Netherlands!
Excellent vid. I’ve just crossed over to asi1600mm from qhy 8l osc and I’ve noticed so much more noise in the images. I thought I was doing things wrong but you images look as noisy as mine. Will definitely put this one in my processing routine. Cheers.
Great info!! I've been checking out a lot of your videos and they have helped me with my processing in Pixinsight. One day if you can do a video on how you sharpen up the edges on nebula clouds & how to bring out some other colors like the light browns or the colors that are not your normal Red, green or blue like I see in so many photos on Astrobin. I see some nebula clouds like in the in Iris Nebula that show off the light browns and blacks. I keep over doing it and blows out everything when I try it lol
Capturing the light browns in the nebula, like the Iris, usually comes down to amount of exposure time you have taken (how many hours, lots of them) and also how dark your sky is. If I shoot the Iris from my bortle 3 cottage and gather a lot of hours on it the light brown begins to be pop out. If I'm shooting from bortle 7 sky in suburbs, not so much.
Great video! Thanks for making this. NR in PI has been challenging, so I have always used Photoshop camera raw or LightRoom. Looking forward to applying this to some old data. Just followed you on Instagram. 👍
Hey, Shawn! I was using more the ACDNR process, but let me tell you something. After applying your process I loved the result! Thanks for sharing, pal! (Got that QHY camera for me already? ;) )
You use the Lightness-extraction step which Shawn does in about 6:27 to create a mask. This is what you do whether your colour image is from an OSC or a combined RGB image from a mono camera, and it works great.
Excellent work! Just a couple of questions, as a disciple of your amazing tutorials from recent years. 1. Are you still using MLT denoise in the linear phase? 2. In your original TGV workflow, you used a brightened, low-contrast mask, whereas now you are using a high-contrast mask. Can you tell us why you've changed tack?
A disciple! lol. Awesome. If I use this TVGdenoise method I'm not using MLT in the linear phase. There's no need to. I found MLT didn't always produce the desired result I wanted. I still use it though, just depends on the image and what works best. This TGVdenoise way is just another method. Thought I'd give it a go. Worked good. The other way I demonstrated works well to and is supposed to help preserve fine details better. I haven't done a direct comparison though. I found this method demonstrated in this video didn't impact the fine details all that much.
Subscribing as I like that you're clear and very understandable overall. It'd be perfect if you didn't mouse click so quickly. As much as I like Pixinsight, it's a struggle to not get pulled back into Photoshop due to some of these esoteric PI mechanics that are taken for granted by advanced users, but quickly lost on us intermittent users.
Thanks for subscribing and the feedback. Have you tried NoiseXterminator for Pixinsight? Works fantastic. Less work too. Well worth the small cost for it. BlurXterminator I'd also recommend. Can be found here... bit.ly/3FXxCtz
Good question. You can use TVGD on individual mono channels if you like but there's probably not a lot to be gained doing it that way, for noise reduction anyhow, since using RGB/K mode in TVGD will target all channels anyhow.
Another Excellent Vid mate ...A quick question did you use MLT at all before you stretched it ? You have no idea how much you have helped me with Pix...I have gone from using it to Debayer and Stretch before retreating to Photo Shop to fully edit my images with it ...
No, there was no MLT done at all. Which is why I like this method of TVGD. Works effectively on its own without need for any other NR. I've had situations where MLT didn't work as well as I needed it to. So this method of NR helps a lot. Thanks for watching! Cheers.
@@VisibledarkAstro I think even though my camera is still sold new it’s not exactly the latest technology but as beginner it’s perfectly acceptable for my processing knowledge so far 🤭
That's another way you could do it, but I don't use Photoshop for processing astro images. I've seen the results from Denoise AI on astro images and didn't like it though. But that's me. To each his own!
@@VisibledarkAstro Has nothing to do with Photoshop, it's standalone (there might be a Photoshop integration, which I don't use). I have used Denoise AI and like it, it's fast and simple. Since I am a PixInsight user also, I'm going to try out DGV Denoise for sure. Thanks for the input, like always, excellent video!
Thanks for watching! Please subscribe and like if you haven't already. It helps the channel grow and means a lot to me. Hit the bell notification for new videos as they come out! Clear skies!
THIS IS THE BEST PIXINSIGHT TECHNIQUES CHANNEL ON RUclips!!!!!!
Thank you! :)
Great stuff. Noise was the thing that eventually forced me to make the jump from Siril to PixInsight, because the noise reduction in Siril never really seemed to do anything.
And this tutorial was a great start. I'll still check out some of the other methods, and test it out on a few more images to see which work best for me, but I'm definitely liking TGV so far.
Great tutorial. I've tried MLT and MMT in linear stage before, with noticeable improvement.
But then I tried this approach to TGVDenoise and it just SMOKED every thing I've tried prior. Stretching further to reveal faint details became so painless. Thanks for posting this.
Shawn. Thanks for that, absolutely the best explanation of TGV that I have come across. Just tried it on my current image (NGC300 in LRGB) and very happy with the results. Noise reduction has been the bane of my existence, especially with galaxy images) and I think this will help enormously.
Awesome Video Shawn! TGV Denoise works great!!!Very informative and you explain the process in a very understandable way! Great Job!
Glad it was helpful!
Best thumbnail yet Shawn, had me cracked up! good video as always, thank you.
While I don't use photoshop for astro image processing it sure is fun for doing other stuff! lol.
Thanks for this. It is very powerful.
Great video Shawn - I've used TGV denoise and other noise reduction scripts in PI and will definitely go back and re-visit this one - with your great tips and suggestions!
Sounds great!
Hi Shawn, I use TGV denoise a lot but I haven't tried it with the mask and changing the settings to values indicated by the Statistics script. Thanks for another informative video, I will try this new method (for me). I do find it a balancing act between denoiseing then sharpening parts of the image which introduces noise back into it. Oh well, still learning.....
Yes it can be tricky. Always use your luminance image for resolution and sharpening. Use masks as much as possible. Sometimes its a balance that is needed.
Great tutorial! Have used TGV Denoise before but not measured the background before. This really will improve my ability to reduce the noise. Thanks 🙏
Great! Glad this was helpful. Thanks for tuning in and commenting! Cheers.
Baselining TGVD from the channel stats... nice tip! Definitely going to integrate it into my workflow.
Fantastic!
Thank you Shawn for doing these videos, keep up the great work!
Thanks, will do!
Thanks for another great video. TGVDeNoise is a very powerful tool. I typically run the linearmask noise reduction process from one of your earlier videos. However, there are some datasets where it does not do well. My image set of Bode's Galaxy is a good example, just could not find a setting/configuration with LNRMsk that did not result in a very splotchy background, almost pixelated. Part of the problem in LnrMask, I believe, was the mask - very inconsistent when reviewed in the preview for no reason I could discern despite multiple attempts. TGVDeNoise, following your process here, gave a very satisfactory result.
I've learned such a great deal from your video's! I'm understanding Pixinsight better and better, and see my images develop enormously! Many thanks from The Netherlands!
Excellent vid. I’ve just crossed over to asi1600mm from qhy 8l osc and I’ve noticed so much more noise in the images. I thought I was doing things wrong but you images look as noisy as mine. Will definitely put this one in my processing routine. Cheers.
Your*
Excellent video. Thank you.
Thanks for tuning in!
Hi.
Great tutorial Shawn! Very useful I did not know how to use TGVDenoise.
JM.
Glad it was helpful!
Great video, Shawn. I've tried TGV Denoise in the past with limited success. I'll give this a try though as it seems intuitive and simplified. Thanks!
Great info!! I've been checking out a lot of your videos and they have helped me with my processing in Pixinsight. One day if you can do a video on how you sharpen up the edges on nebula clouds & how to bring out some other colors like the light browns or the colors that are not your normal Red, green or blue like I see in so many photos on Astrobin. I see some nebula clouds like in the in Iris Nebula that show off the light browns and blacks. I keep over doing it and blows out everything when I try it lol
Capturing the light browns in the nebula, like the Iris, usually comes down to amount of exposure time you have taken (how many hours, lots of them) and also how dark your sky is. If I shoot the Iris from my bortle 3 cottage and gather a lot of hours on it the light brown begins to be pop out. If I'm shooting from bortle 7 sky in suburbs, not so much.
Great video! Thanks for making this. NR in PI has been challenging, so I have always used Photoshop camera raw or LightRoom. Looking forward to applying this to some old data. Just followed you on Instagram. 👍
Can you start posting some of your videos on Rumble. Many of us are moving to that platform because of censorship on RUclips.
Hey, Shawn! I was using more the ACDNR process, but let me tell you something. After applying your process I loved the result! Thanks for sharing, pal! (Got that QHY camera for me already? ;) )
Fantastic! Glad you found it useful. As for the camera, still working on it! lol ;)
@@VisibledarkAstro hahaha!
Great video Shawn. Would you change anything if working with a one shot color image where I don't have a luminance frame?
You use the Lightness-extraction step which Shawn does in about 6:27 to create a mask. This is what you do whether your colour image is from an OSC or a combined RGB image from a mono camera, and it works great.
@@captbuscemi This is correct! Thanks for answering.
Nice ! Thank you =)
How do I get the luminance image
Excellent work! Just a couple of questions, as a disciple of your amazing tutorials from recent years. 1. Are you still using MLT denoise in the linear phase? 2. In your original TGV workflow, you used a brightened, low-contrast mask, whereas now you are using a high-contrast mask. Can you tell us why you've changed tack?
A disciple! lol. Awesome. If I use this TVGdenoise method I'm not using MLT in the linear phase. There's no need to. I found MLT didn't always produce the desired result I wanted. I still use it though, just depends on the image and what works best. This TGVdenoise way is just another method. Thought I'd give it a go. Worked good. The other way I demonstrated works well to and is supposed to help preserve fine details better. I haven't done a direct comparison though. I found this method demonstrated in this video didn't impact the fine details all that much.
Do you prefer tgv denoise over ezdenoise? Pretty sure ezdenoise utilizes tgv but I assume tgv gives more customization...
Good stuff Shawn! 🖒🖒👏 Things have come a long way since Noise Ninja! lol. 😆 BTW, I sent you are PM via your website last week... ☺
I remember using Noise Ninja! So long ago now. lol. Sent a PM on FB you mean?
@@VisibledarkAstro Hi. I think I sent the PM to the contact email address shown on your website.
Hello,
Why do u use only rgb? Why dont u use single luminance and chrominance channel to remove noise?
Great work Shawn. Educational tutorial. Have you had a change to look MUREDenoise? That has worked very well for me too.
I've used MureDenoise as well. There are a few different ways to do NR in Pixinsight. I've found they all work well in their own way.
Cheers. I like MureDenoise as it caters the conditions of your sensor into its calculation - a little less "finger in the air touch-feel".
Have you tried Topaz denoise? In my experience it does a better job than PI. But then again so does stacking 300 subs ;)
I've tried it. It works well enough but I still prefer doing noise reduction in PixInsight.
Subscribing as I like that you're clear and very understandable overall. It'd be perfect if you didn't mouse click so quickly. As much as I like Pixinsight, it's a struggle to not get pulled back into Photoshop due to some of these esoteric PI mechanics that are taken for granted by advanced users, but quickly lost on us intermittent users.
Thanks for subscribing and the feedback. Have you tried NoiseXterminator for Pixinsight? Works fantastic. Less work too. Well worth the small cost for it. BlurXterminator I'd also recommend. Can be found here... bit.ly/3FXxCtz
Would you denoise individual monochrome channels, or only on the combined RGB image?
Good question. You can use TVGD on individual mono channels if you like but there's probably not a lot to be gained doing it that way, for noise reduction anyhow, since using RGB/K mode in TVGD will target all channels anyhow.
Another Excellent Vid mate ...A quick question did you use MLT at all before you stretched it ? You have no idea how much you have helped me with Pix...I have gone from using it to Debayer and Stretch before retreating to Photo Shop to fully edit my images with it ...
I must add Ron has been an amazing inspiration and guide over the years too
No, there was no MLT done at all. Which is why I like this method of TVGD. Works effectively on its own without need for any other NR. I've had situations where MLT didn't work as well as I needed it to. So this method of NR helps a lot. Thanks for watching! Cheers.
great video, noise is a thing of the past now....lol
Agreed. Certainly a lot less of a problem with the new cameras, low read noise and also powerful noise reduction tools.
@@VisibledarkAstro I think even though my camera is still sold new it’s not exactly the latest technology but as beginner it’s perfectly acceptable for my processing knowledge so far 🤭
Nice tutorial. But a bit overcomplicated ;-)
Thanks. It's not that bad once you run through it a couple times to learn it. Is pretty quick to do. Thanks for watching!
Denoise AI. Done.
That's another way you could do it, but I don't use Photoshop for processing astro images. I've seen the results from Denoise AI on astro images and didn't like it though. But that's me. To each his own!
@@VisibledarkAstro Has nothing to do with Photoshop, it's standalone (there might be a Photoshop integration, which I don't use). I have used Denoise AI and like it, it's fast and simple. Since I am a PixInsight user also, I'm going to try out DGV Denoise for sure. Thanks for the input, like always, excellent video!