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12/19/2003 09:00:48 AM · #1 |
I've just started using Neat Image and am wondering about the Noise Profiles. I'm guessing the way it would work best is to have a profile for each ISO sensitivity in my camera and apply that profile to pictures taken under the appropriate ISO, is this correct? What would be the best way to get the profiles - would taking a picture of a white piece of paper (filling the frame) be best or would a solid dark color be best to determine the profile from. Any suggestions?
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12/19/2003 09:34:03 AM · #2 |
| You can also download profiles for your camera off the internet. |
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12/19/2003 12:48:12 PM · #3 |
NI have an image on their site - a greyscale card, basically, which is suggested as a target image for setting-up your camera.
You're absolutely corect in theory - despite many many people's opinions to the contrary - as to how it works. Or should work. I always found that taking a separate profile for each ISO of my camera gave better results than using the site's own profiles - but that's a marginal preference. Be aware also that there's lots of processing possibilities (sharpness, mainly) that you can set-up and save as settings files ... once you find a decent set of settings it's worth saving them.
There are people who seem to think it should be used as a final step in Image processing, after re-sizing. Whilst it works OK like that, it's nothing compared with the results from using it as the writers intended.
Ed
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12/19/2003 02:57:58 PM · #4 |
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12/19/2003 03:09:16 PM · #5 |
Originally posted by Rooster:
What is Neat Image? |
The top right hand image on this page was done, for the most part, with Neat Image:
//titoi.com/data/comps.html
It's basically a noise cleaner-upper, but it's also used to smooth out people.
//neatimage.com/
Message edited by author 2003-12-19 15:09:55.
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12/19/2003 03:38:22 PM · #6 |
wow! Very cool! Thanks for the link, Andi. Is neat image legal for DPC challenges?
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12/19/2003 04:07:15 PM · #7 |
Yes, the rules specifically state:
standalone image cleanup utilities such as NeatImage
are legal. Just be careful with NI, it is easy to over-do it. |
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12/19/2003 04:12:02 PM · #8 |
Rooster, the image that I directed you to was one of the first I did with NI, and I was intentionally trying to see how plastic I could make my husband look. I wouldn't suggest doing it to that extreme for every day use ;-)
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12/19/2003 07:15:48 PM · #9 |
THanks guys. I hop e to try it out & share soon!
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12/19/2003 09:44:05 PM · #10 |
Originally posted by ahaze:
... It's basically a noise cleaner-upper, but it's also used to smooth out people. |
There's a few forum threads I'd like to apply this to ... |
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12/19/2003 10:52:28 PM · #11 |
Hey guys, thanks for the info
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12/20/2003 02:11:36 PM · #12 |
| I've just started using NI myself and am wondering why I have such a big loss in image size after the filtering is applied. The image I applied it to went from 148 kb down to 49. Does the filtering automatically reduce image size, and how would one get around this to maintain the image size I started with? |
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12/20/2003 02:57:38 PM · #13 |
Originally posted by Olyuzi:
I've just started using NI myself and am wondering why I have such a big loss in image size after the filtering is applied. The image I applied it to went from 148 kb down to 49. Does the filtering automatically reduce image size, and how would one get around this to maintain the image size I started with? |
First, a question: are you using the demo version? If so, it will only save in a low-quality mode, so file size will be dramatically smaller.
Second, yes reducing the noise will reduce the jpeg file size. This is true for any filter that reduces noise (or detail). Try applying a 3px gaussian blur to an image, resave and look at the file size!
Simley put, the reason for the size reduction is that there is less information in the photo and so the jpeg algorithm is able to compress more.
If you are not using the demo version and are seeing a 3:1 reduction in file size, either the image was VERY moisy to begin with, or you have been quite agressive with Neatimage. Be very careful with how much noise reduction you apply, or you will get the "plastic look", which is not (usually) desired.
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12/20/2003 03:47:28 PM · #14 |
Does PS 7 have neat image function?
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12/20/2003 03:50:21 PM · #15 |
Originally posted by Rooster:
Does PS 7 have neat image function? |
There is a "despeckle" filter in PS 7 that performs a similar function, but in a rudimentary manner. NeatImage is a much more sophisticated filter. There is a version of NeatImage that will work as a plug-in to PS, however it is more expensive than the stand-alone version.
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12/22/2003 07:19:19 PM · #16 |
Kirbic, thanks much for your answer to my question. I've been using the demo version since I downloaded and even though the file size reductions have been drastic, I like the program so much I'm going to purchase the regular verion.
Yes, I did filter too much and got very plastic looking results for the picture I'm going to enter for the "Edges" challenge. Hopefully, I'll get a chance to redo it tonight. I think I'll start off with a larger file size so that when I do filter it in NI I should be able to save it to about 150kb.
I guess from your response adding a guassian blur will add data to the file size and then when I filter and sharpen in NI it will go down to the right DPC legal file size without the noise or focus issues.
Thanks for you help...olyuzi
Originally posted by kirbic:
Originally posted by Olyuzi:
I've just started using NI myself and am wondering why I have such a big loss in image size after the filtering is applied. The image I applied it to went from 148 kb down to 49. Does the filtering automatically reduce image size, and how would one get around this to maintain the image size I started with? |
First, a question: are you using the demo version? If so, it will only save in a low-quality mode, so file size will be dramatically smaller.
Second, yes reducing the noise will reduce the jpeg file size. This is true for any filter that reduces noise (or detail). Try applying a 3px gaussian blur to an image, resave and look at the file size!
Simley put, the reason for the size reduction is that there is less information in the photo and so the jpeg algorithm is able to compress more.
If you are not using the demo version and are seeing a 3:1 reduction in file size, either the image was VERY moisy to begin with, or you have been quite agressive with Neatimage. Be very careful with how much noise reduction you apply, or you will get the "plastic look", which is not (usually) desired. |
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