Found a new way to increase resolution (Page 2): All I see is increased contrast. You can't add detail that was not there to begin with.

CatMarley Loc: North Carolina

JimH123 wrote:

I have been playing with some software to process ... (show quote)

All I see is increased contrast. You can't add detail that was not there to begin with.

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

JimH123 wrote:

I have been playing with some software to process ... (show quote)

You have improved the perception of sharpness, not increased the amount of detail captured. So there is really no increase in resolution. No doubt the high frequency manipulation is seen as being "sharper" - but sharpness is made up of contrast and resolution - and generally speaking, a higher contrast image will be perceived as being sharper than a less contrasty yet higher resolution image.

alberio Loc: Casa Grande AZ

tomcat wrote:

Looks similar to the results I get with AI Clear from Topaz

I have Nebulosity and Topaz AI Clear. I use Nebulosity to stack my images, then use Canons DPP or Topaz to do more. I never was able to get Nebulosity figured out.

JimH123 Loc: Morgan Hill, CA

CatMarley wrote:

All I see is increased contrast. You can't add detail that was not there to begin with.

No, this is not correct. The data is in the RAW file, but the Demosaicing that took place lost some level of fine detail. The Nebulosity program accessed the same RAW file, and extracted more of the detail that had been lost with Lightroom's demosaicing process. Remember that a RAW file is not viewable as a color image until it has been demosaiced. And this process is a method of interpolation where the true values of RGB is attempted to be calculated for every pixel in the color image. And it is not perfect. Tradeoffs are made. Priority for general photography is better color vs better detail.

As another way to see this, I am displaying an image that is commonly used for camera evaluation. It has all sorts of things on the screen to see the effects of moire, or detail, or color, etc. Just above the center are some text boxes. I am going to now display a side by side with Nebulosity on the left and Lightroom on the right. The text becomes smaller with each row allowing one to determine how far down one can go before the text becomes unreadable. As you can see, the one debayed by Nebulosity can go lower that the one from Lightroom. Its not getting that from pulling out detail that isn't there. Its pulling detail from the RAW file that Lightroom failed to use. Pay no attention to the fact it is a little darker. I did not adjust it ahead of time, so I just left it as it was.

As you compare the two sides, notice how bad the Lightroom side becomes as the text becomes smaller. This is coming from the debayering process as it cannot deal with the finer detail.

Decided to use "Enhance Detail" on the RAW file and display the 3 text boxes which you can see here. As you can see, there has been much more detail pulled from the RAW file. This is not a contrast trick. It is more detail pulled from the RAW file.

(Download)

TheShoe Loc: Lacey, WA

jerryc41 wrote:

Another "must buy." I'm all bought out.

https://optcorp.com/products/stark-labs-nebulosity-software
http://www.stark-labs.com/nebulosity.html

You omitted the word "not" that should have been between "must" and "buy".

Paul Diamond Loc: Atlanta, GA, USA

jerryc41 wrote:

Another "must buy." I'm all bought out.

https://optcorp.com/products/stark-labs-nebulosity-software
http://www.stark-labs.com/nebulosity.html

So, it requires a dedicated digital astro camera? My D800E and D850 are out of luck as well as other non-dedicated astro cameras? - So much to learn by getting back involved with my original love from childhood!

JimH123 Loc: Morgan Hill, CA

Paul Diamond wrote:

So, it requires a dedicated digital astro camera? My D800E and D850 are out of luck as well as other non-dedicated astro cameras? - So much to learn by getting back involved with my original love from childhood!

It works with all RAW files from normal production cameras. It's just not a refined program the masses will use. But give Lightroom or Camera RAW a chance with "Enhance Details". You will get a lot of detail out of your RAW file. The effect is most noticeable on files with lots of fine detail. Regular Debayering handles the easy files just fine.

JimH123 Loc: Morgan Hill, CA

alberio wrote:

I have Nebulosity and Topaz AI Clear. I use Nebulosity to stack my images, then use Canons DPP or Topaz to do more. I never was able to get Nebulosity figured out.

I admit that its not always intuitive.

JimH123 Loc: Morgan Hill, CA

Gene51 wrote:

You have improved the perception of sharpness, not increased the amount of detail captured. So there is really no increase in resolution. No doubt the high frequency manipulation is seen as being "sharper" - but sharpness is made up of contrast and resolution - and generally speaking, a higher contrast image will be perceived as being sharper than a less contrasty yet higher resolution image.

Well, yes and no. Regular debayering smears the fine detail, and then it is gone. You can't sharpen it back.
What it does do is retain that fine detail. Without doing any sharpening, nor any contrast adjust, you see better detail.

Go back and look at the close up image of the stars that I posted. Blow it up big and look at the smearing mess around those stars that didn't happen with Nebulosity. Regular debayering is just not great at the high frequency component of images. And most of the time, who cares.

But Adobe did recognize this deficiency and 1 year ago added "Enhance Details". If there was not a problem, they wouldn't have released it. So yes, the image is showing additional detail. Detail that conventional debayering just throws away.

https://petapixel.com/2019/02/12/adobe-enhance-details-increases-raw-photo-resolution-by-up-to-30/