Photoshop equiv of PaintShopPRo salt+pepper?

Does Photoshop have an equivalent for PaintShopPro's salt and pepper filter?
I have CS2 and can't find anything, other than Noiseware etc. plugins.

I'm impressed by the salt+pepper filter in PSP 9. It is very flexible
and seems to reduce both film grain (in scans) and digicam noise.

Bill Tuthill wrote in :

Does Photoshop have an equivalent for PaintShopPro's salt and pepper
filter? I have CS2 and can't find anything, other than Noiseware etc.
plugins.

I'm impressed by the salt+pepper filter in PSP 9. It is very flexible
and seems to reduce both film grain (in scans) and digicam noise.

Median filter.

Dust and scratches filter, for streakier things.

--


John P Sheehy

John Sheehy wrote:

Does Photoshop have an equivalent for PaintShopPro's salt and pepper
filter? I have CS2 and can't find anything, other than Noiseware etc.
plugins. I'm impressed by the salt+pepper filter in PSP 9. It is very
flexible and seems to reduce both film grain (scans) and digicam noise.

Median filter.
Dust and scratches filter, for streakier things.

The Photoshop median filter works better than I thought it would,
but it seems to soften the image more than the PSP Salt+Pepper filter.
The only control was Radius, and I selected 3 because 1 didn't do much
and 2 made the noise look blotchy. Any ideas?

PaintShopPro has a median filter, in addition to its Salt+Pepper filter.

This thread shows the image in question:
http://www.photo.net/bboard/q-and-a-...?msg_id=00Ltzp

Bill Tuthill wrote in :

The Photoshop median filter works better than I thought it would,
but it seems to soften the image more than the PSP Salt+Pepper filter.
The only control was Radius, and I selected 3 because 1 didn't do much
and 2 made the noise look blotchy. Any ideas?

Yeah, I forgot about PS' lack of a threshold control. Try the "Dust and
scratches" filter and use the threshold control.

--


John P Sheehy

John Sheehy wrote:

The Photoshop median filter works better than I thought it would,
but it seems to soften the image more than the PSP Salt+Pepper filter.
The only control was Radius, and I selected 3 because 1 didn't do much
and 2 made the noise look blotchy. Any ideas?

Yeah, I forgot about PS' lack of a threshold control.
Try the "Dust and scratches" filter and use the threshold control.

Thanks again, John! I did as you suggested, and I still think
the Salt+Pepper filter in PaintShopPro runs circles around any of the
Photoshop noise filters. Maybe Adobe does it this way intentionally
to support sales of Noiseware etc.

You've probably got better things to do with your time, but perhaps
you could do something in Photoshop that would give better results than
what I did here (bottom of thread) with PSP Salt+Pepper filter.

http://www.photo.net/bboard/q-and-a-...?msg_id=00L1Td

Bill Tuthill wrote in :

http://www.photo.net/bboard/q-and-a-...?msg_id=00L1Td

Are you talking about the young people sitting in the grass? Is that the
origial pixel resolution of the scan? If so, you scanned with a scanner
that aliases, and probably has too litle resolution.

--


John P Sheehy

John Sheehy wrote:

http://www.photo.net/bboard/q-and-a-...?msg_id=00L1Td

Are you talking about the young people sitting in the grass? Is that the
origial pixel resolution of the scan? If so, you scanned with a scanner
that aliases, and probably has too litle resolution.

You're right. The original is the "large" JPEG in the post above mine.

My next question would be, how much better are Noiseware/NoiseNinja etcetera
than PSP's Salt+Pepper filter? I don't own any noise reduction software,
having no real need for it (it's easy enough to blur blue sky, which is
usually the only grain/noise that bothers me).

Bill Tuthill wrote in :

You're right. The original is the "large" JPEG in the post above
mine.

I would look into re-scanning before thinking about post-processing. The
scanning is horrible in that image. It looks like only a tiny fraction
of the total area was point-sampled. The aliasing is so harsh in some
spots, I can't even see what the subject matter is. The grain is being
sampled at dark at light parts, and is being over-emphasized in the
image. Did you downsample this? How did you downsample it? There's
something very wrong with this JPEG which isn't a noise issue per se.

My next question would be, how much better are Noiseware/NoiseNinja
etcetera than PSP's Salt+Pepper filter? I don't own any noise
reduction software, having no real need for it (it's easy enough to
blur blue sky, which is usually the only grain/noise that bothers me).

I haven't looked at these programs in years; I don't know what their
capabilties are, but I doubt that they can do anything with the image you
linked to, other than provide a very blurry, low-detail image. The
problem is the very fabric of the image; not added noise.



--


John P Sheehy

John Sheehy added these comments in the current discussion du
jour ...

Bill Tuthill wrote in
:

You're right. The original is the "large" JPEG in the post
above mine.

I would look into re-scanning before thinking about
post-processing. The scanning is horrible in that image. It
looks like only a tiny fraction of the total area was
point-sampled. The aliasing is so harsh in some spots, I
can't even see what the subject matter is. The grain is being
sampled at dark at light parts, and is being over-emphasized
in the image. Did you downsample this? How did you
downsample it? There's something very wrong with this JPEG
which isn't a noise issue per se.

My next question would be, how much better are
Noiseware/NoiseNinja etcetera than PSP's Salt+Pepper filter?
I don't own any noise reduction software, having no real need
for it (it's easy enough to blur blue sky, which is usually
the only grain/noise that bothers me).

I haven't looked at these programs in years; I don't know what
their capabilties are, but I doubt that they can do anything
with the image you linked to, other than provide a very
blurry, low-detail image. The problem is the very fabric of
the image; not added noise.

I know I'm coming in late, but I saw the mention of PSP. I have
been a user for many years, now on PSP 9. I don't like what Corel
did to it so I refused to buy X or XI. Prior to 9, I used Edge
Preserving Smooth as my primary smoother for both scanning and
digital images exhibiting noise, although the type of noise is
completely different. PSP 9, though, has a simply outstanding
tool called DCNR (Digital Camera Noise Reduction) which was
created for the obvious, but it is equally adept at scan noise,
whether it comes from film grain, half-tone dot patterns, or
whatever. And, it has a second control for sharpness that is
intended to be used after the noise is eliminated, realizing that
there is always a trade-off between noise elimination and
preservation of detail and sharpness. For sharpening, I used to
use Unsharp Mask, but it always gave what I thought were fake
looking images, until I was directed to try DCNR. It works so
well it is hard to believe unless you see it.

I'm obviously not disputing your recommendation for the OP to
rescan his print, I just jumped in when I saw "PSP."

--
HP, aka Jerry

HEMI-Powered wrote:

I know I'm coming in late, but I saw the mention of PSP. I have
been a user for many years, now on PSP 9. I don't like what Corel
did to it so I refused to buy X or XI. Prior to 9, I used Edge
Preserving Smooth as my primary smoother for both scanning and
digital images exhibiting noise, although the type of noise is
completely different. PSP 9, though, has a simply outstanding
tool called DCNR (Digital Camera Noise Reduction) which was
created for the obvious, but it is equally adept at scan noise,
whether it comes from film grain, half-tone dot patterns, or
whatever. And, it has a second control for sharpness that is
intended to be used after the noise is eliminated, realizing that
there is always a trade-off between noise elimination and
preservation of detail and sharpness. For sharpening, I used to
use Unsharp Mask, but it always gave what I thought were fake
looking images, until I was directed to try DCNR. It works so
well it is hard to believe unless you see it. --HP, aka Jerry

Thanks very much, Jerry! The Digital Camera Noise Reduction filter
was in a different menu (Adjust Photo Fix instead of Add/Remove Noise)
so I had not seen it, and nobody had ever told me about it.
In some ways it works better, others worse, than the Salt+Pepper filter.
Do you use it primarily for digicam noise, after selecting an area?
It wreaks havoc with the texture of grass.

Speaking of PSP 9, do you know about JPEG save and chroma subsampling?
I've heard it's messed up in PSP 9.