Quality Problem with Scanned Image

C
Posted By
comeon
Feb 27, 2004
Views
1431
Replies
37
Status
Closed
I have scanned several images from an ancient photo album each scan has multiple pictures on it, the problem occurs when you zoom in, it almost looks like cordory. Its a HP scanjet scanner and i have the dpi set to 300…i was trying to repair the images with photoshop 7.0 but these lines are screwing everything up. Thank you very much,
Bill

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RW
Rene_Walling
Feb 27, 2004
it almost looks like cordory

Do you mean corduroy?

When you say you are scanning "from an ancient photo album" do you mean an album of actual photos (ie, light sensitive emulsion on paper) or do you mean a book with images printed in it, kind of like a coffee table book.

If the latter, what you see may be caused by the screening of the printing process
C
comeon
Feb 27, 2004
sorry yes i did mean corduroy…and its actual photos although they are from the 50’s and 60’s…which is why they need repair. Thanks for the quick reply.
Bill
SF
Scott_Falkner
Feb 27, 2004
What HP scanner are you using? I’ve used a few of them, most recently a 5500c, and I can tell you they are lousy scanners.
Y
YrbkMgr
Feb 27, 2004
Are the pictures in the photo album covered with a clear plastic? Light refraction would explain the pattern you’re seeing.

You need to remove the pictures from the photo album, or at least remove the plastic. When the scanner light moves across the image, if there’s plastic "protecting" the image, those minute variations in height between the backing and the top of the picture can cause artifacts. In addition, the material that the plastic is made from affects how light refracts.

If you do NOT have plastic over the pictures, sorry – just trying to help.

Peace,
Tony
RW
Rene_Walling
Feb 27, 2004
The problem may also be that awful photo finish that was popular back then…
RH
r_harvey
Feb 27, 2004
If the lines look like faux-linen, it’s on the original print–you can tell this–just look at the print. You may be able to hide part of this pattern by rotating the print on the scanner bed 90-degrees, before you scan.

If the lines are regular, perhaps there is an anti-Newton ring sheet on the scanner, or the scanner glass is etched.
C
comeon
Feb 28, 2004
well its not the plastic but thanks its possible that it could be the paper but more suspect is the scanner here is a link to a clip of one of the pictures <http://home.comcast.net/~knetter420/index.html>
Thanks again much appreciated
Bill
Y
YrbkMgr
Feb 28, 2004
Looks exactly like what I would expect from a plastic cover. But you’re saying that there is no plastic.

Is that the result of the image at 100% mag in Photoshop?
RH
r_harvey
Feb 28, 2004
It doesn’t look like the stripes are 100% vertical, which would seem to rule-out the scanner glass. It doesn’t rule-out a cover sheet on the scanner, but you say there’s no plastic anywhere.

I presume the example is enlarged about 3-4X (since it was scanned at 300). This still looks like stripes on the paper stock.

Without knowing more than this, all I can still suggest is rotating the paper 90-degrees.
JS
John_Slate
Feb 28, 2004
It’s the scanner.

I had a cheap piece of cr*p scanner that used to produce just such an effect.

You can verify this by scanning the same photo 2 ways, 90 degrees from each other and you will notice the lines do not rotate with the photo.
Y
YrbkMgr
Feb 28, 2004
Hmmm… interesting John. I don’t doubt you one iota, but it sure would be interesting if Bill confirmed it.

I’ve never used HP Scanners, only Microtek and Epson. Good catch, if that’s the deal.
RH
r_harvey
Feb 28, 2004
If it were bands from a broken scanner stepper motor, they’d run in the other direction.
Y
YrbkMgr
Feb 28, 2004
Depends on the orientation of the image on the scanbed Harv. We don’t know what orientation it was in when posted it.
RH
r_harvey
Feb 28, 2004
Betcha it’s right way ’round. He’d have to rotate it in the scanner software or PS, and he hasn’t gotten past the point of seeing stripes.
Y
YrbkMgr
Feb 28, 2004
Ehhhh, could be right. We don’t know.

But I agree, that if the image was scanned from "head to toe" instead of from "hand to hand", then you’re right, can’t be stepper motor. However, it still COULD be an electric fluctuation causing CCD anamolies. <shrug>.
RH
r_harvey
Feb 28, 2004
Or absolutely horrible glass on the scanner–I hope that’s not the case.

In my case, the backlight (for scanning film) is incredibly uneven–it would make very stripey pictures. But the scanner software knows enough to compensate for the stripes. I guess that’s what you get when you pay $199 for a high-resolution film scanner.

It’s all conjecture, until we hear from the star witness again.
Y
YrbkMgr
Feb 28, 2004
<nodding>
P
Phosphor
Feb 28, 2004
"…images from an ancient photo album…and its actual photos although they are from the 50’s and 60’s…"

Oh, man, I feel about 174 years old right now.
C
comeon
Feb 28, 2004
ah yesh sherlock homes…i think its probably the scanner heres a clip of one of the the pictures <http://home.comcast.net/~knetter420/>
Thanks for the quick replies
Bill
JS
John_Slate
Feb 28, 2004
that’s the same clip as before.

did you scan the same photo 2 ways and see that the lines did not appear in the same orientation relative to the photo?

and out of curiousity, was the clip you posted rotated after scanning?
C
comeon
Feb 29, 2004
ya sorry about the repetitive thing there was still recovering from the concert last night. No i didn’t try scanning it again but i will try that and yes the photo was rotated after scanning.
JS
John_Slate
Feb 29, 2004
OK then, if you have not tried scanning the same image 2 ways, what lead you to conclude that the scanner was at fault?
Y
YrbkMgr
Feb 29, 2004
Heh.
P
Phosphor
Feb 29, 2004
Hesh.
(I got drunk at a Comedy Club 😉 )
Y
YrbkMgr
Feb 29, 2004
Lucky you. I can’t type after I drink.
P
Phosphor
Feb 29, 2004
Neither can Carl. I should have textlogged the AIM thing.
Y
YrbkMgr
Feb 29, 2004
Okay phos. You’re talking nonsense now. Lay down. There there. Keep a glass of water by your bed. Nigh nigh.
P
Phosphor
Feb 29, 2004
Ummm…I was just joking with the "Hesh" thing.

I’ve been dry for about 2 months.

Funny thing is, I don’t feel any better!

😉
Y
YrbkMgr
Feb 29, 2004
<shrug> I wasn’t judging. I was trying to be funny. Guess I need to work on that.
C
comeon
Feb 29, 2004
the yesh was my impressionation of Dr. watts after a couple sherrys i dunno…but back to the topic i am going to scan the page again today and find out whether the lines rotate with the image or not… what lead me to believe it was the scanner was the fact that it sucks it was like 99 bucks 4 years ago… is there anyway to fix it with photoshop maybe something along the lines of an action cause i have a bunch of images to repair and dont want to spend a day trying to fix just those lines, also if i figure out it was the scanner where would you guys take the images to have them scanned? Thanks again this
Bill
oh the image was rotated 90 degrees after scanning
BB
Bert_Bigelow
Feb 29, 2004
I haven’t used it, but there is a feature called "descreen" in the HP scanner software which removes grid-like artifacts which can occur in scanned images.
I also have an HP 5470c scanner, and I think both the hardware and software are pretty decent. Bert
Y
YrbkMgr
Feb 29, 2004
is there anyway to fix it with photoshop maybe something along the lines of an action

Nope.

there is a feature called "descreen"

It’s a blur type filter, albeit mild. It will help reduce moiré patterns, but nothing like what he’s seeing.

Comeon,

Try posting this at Retrouch Pro <http://www.retouchpro.com/>. They have contests for restorations and such. They may be able to help.

You need a new scanner bruh.

Peace,
Tony
RH
r_harvey
Feb 29, 2004
Well, you could make a scan of nothin’ at the same resolution, invert it or shift it over by a halfa-line, and make that a layer of some kind, then… oh, forget it, just get a new scanner.
Y
YrbkMgr
Feb 29, 2004
oh, forget it, just get a new scanner.

Heh. Yeah, GIGO.
BB
Bert_Bigelow
Feb 29, 2004
I dunno…I don’t see any "corduroy" patterns with my HP scanner, guys. I know how you all hate HP scanners, but what he’s describing doesn’t sound like just a poor scanner to me.
Bert
RH
r_harvey
Mar 1, 2004
Not a crummy scanner, a broken scanner. Stripes across the width of the image often mean the stepper motor or belt is working in fits and starts, instead of running smoothly and making an even-exposure. For instance, I have one scanner (not HP or Epson) that will cause problems if it isn’t on a flat, even surface–touch it in the middle of the bottom, and it’ll stop moving.
Y
YrbkMgr
Mar 1, 2004
<nodding> He needs a new scanner.

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