Removing a Textured Pattern from a Scanned Photo - 5 Minute Digital Fix
One of the most common problems when dealing with scanned photographs as part of a digital restoration activity is that after scanning, the digital image appears to have a textured pattern to it.
This is often caused by the fact that the photograph in question has been printed on textured photographic paper.
This article will show you how to remove the un-desirable pattern effect without significantly loosing any of the important image detail.
The problematic photo may well be an old black and white, sepia, or even a more modern colour photograph.
(I remember Kodak introducing their "Silk finish" prints many years ago printed on a silky sheen textured paper!).
The example image on our web-site is an old black and white wedding photograph that has been printed on a textured paper.
If you look closely at the white cornice behind the bride and groom you can clearly see that the textured pattern of the photographic paper has been faithfully re-produced during the scanning of the photo.
Before we commence any major restoration work we would like to remove as much of the un-desirable textured pattern as is possible.
Open the image up in Adobe Photoshop and the first step is to create a duplicate (copy) layer of the original image by selecting Layer-> Duplicate Layer .. and give the new layer an appropriate name.
Zoom in close enough to get an appreciation of how severe the textured pattern is, but keep some picture detail visible (especially people's faces) so that you can easily judge how well the texture removal is proceeding without loosing too much important picture detail.
With the duplicate layer active apply a Gaussian Blur by selecting Filter->Blur->Gaussian Blur ...
A pop-up option box will allow you to set the amount of Gaussian blur to apply to the image.
I generally start with a Radius = 1.5 and work up from there, constantly looking at the image to see the affect as I increase the blur radius.
Anything over a Radius = 5.0 will usually be far too harsh, so in the example on the web-site the required outcome is to "minimise" the texture pattern effect without compromising the important detail in the photo.
For our web-site example image I found I was able to set Radius = 3.5 without any significant loss of detail.
The example image is starting to "soften", but the textured pattern has clearly diminished.
Zooming out to have a look at the complete photo reveals that the un-desirable textured pattern has all but vanished with only minor softening of the important image detail.
Each photo you work on will have to be judged on its own merits when determining the amount of blur to apply.
But all is not lost on retaining that important image detail!!
Remember ... the Gaussian blur has been applied to the duplicate layer we created at the start of the exercise.
The original image, complete with texture, is sitting under the duplicate layer.
By using Photoshop's Layer Blending Modes and Layer Opacity we can produce an image made up of a combination of both layers with some of the detail from the lower original layer showing through.
Again, each photo will be judged on its own merits and the setting I finalised on for our example image on the web-site may not be the same as you will find most suitable for your own images.
Try experimenting with the different blending modes and layer opacity settings.
I finally settled on a blending mode of "Luminosity" and Opacity of 85% for the Gaussian Blur layer.
To finalise the image I then "flattened" the two layers into a single image layer by selecting Layer->Flatten Image.
I then checked the tonal range of our combined layered image using the Levels command by selecting Image->Adjustment->Levels ... and fine tuned the black, white and grey points.
And last but not least, we can still bring a little bit more "sharpness" out of the image by finally applying a small amount of Unsharp Mask by selecting Filter->Sharpen->Unsharp Mask ...
Experimenting with the various settings, I was able to settle upon Amount = 185%; Radius = 2.5 pixels; and Threshold = 50 levels.
And there you have it ... the removal of an un-desirable textured pattern without significantly sacrificing important image detail.
If you find the steps being taken are a little hard to understand in this text based article, you can click on the link at the end of this article to see the same method explained on our website with the aid of example graphical images.
© Gary Wilkinson 2005 - All Rights Reserved
You can see this method complete with example images at Removing a textured pattern from a scanned photo
Feel free to re-print this article provided that all hyperlinks and author biography are retained as-is.
Gary Wilkinson is a photographer, photographic restorer and the owner of a photographic retail business. He is also the publisher of the http://www.restoring-photos-made-easy.com website, where other methods of correcting common photographic restoration problems are discussed.
This RSS feed URL is deprecated, please update. New URLs can be found in the footers at https://news.google.com/news
Gallery in Carrizozo displays top submissions for the New Mexico Magazine photography competition - Ruidoso News
Take Spectacular Nighttime Photos with your Digital Camera - Part I
Night photographs express a special something that cannot be seen in normal daytime photography. Whether it is a photograph of a moon and starlit sky over a windy deserted beach, the excitement of a downtown cityscape when the lights go on, or just a picture of you and some friends in front of a favorite hangout, nighttime photos, when done right, are sure to attract attention.
Diffusion & Softening of Digital Photography Images
Like many people who've made the switch from film cameras to digital, I've discovered that the lens tools I once used so effectively on my cameras to soften, diffuse and vignette my images for quality "finished" professional results won't do for digital what they did for film.I'm sure it's arguable by some that their diffusers still work fine, and I too have discovered that some tools still work okay under some circumstances; my Ziess Softar #1 seemed to offer decent results when photographing a single subject in the studio but I knew that the black netting diffuser that I used with my Lindahl Bell-o-shade no longer worked on the Nikon D70 zoom lens at the wider angles without showing lines in the image.
Underwater Photography: The Wonders Under the Sea
The world of photography is an amazing one. It's been with us for quite a while now but it is constantly changing.
The Benefits of Underwater Digital Cameras
Underwater digital cameras are fun and easy to use under the water and great above the water as well. Use your underwater digital camera in all kinds of weather, for many activities and in a variety of locations that could be either wet or wild.
How to Create a Great Video - a Simple Guide on How to Shoot Home Movies with a Camcorder
So you have bought a camcorder and have shot some footage, but truthfully you don't much like the results. Maybe I can help.
Photo Equipment Lists
You arrive at your photo shoot excited about the images you are about to take - that is, until you realize that you have left an important piece of equipment at home. You now will have to improvise, spend extra money or time to replace the item, or go without it for the shot.
The Beauty of Nature Photography
Nature is all around us, and its beauties are unlimited. In this fast-paced world of mocha-lattes and traffic jams at rush hour, too many of us take the beauty of nature for granted.
Help! My Old Colour Photo has Turned Pink - 5 Minute Digital Fix
Almost all of us will have seen this particular photographic problem, namely, your old colour photographs appear to have taken on an overall pink or blue tint.This is primarily due to the chemicals within the various layers of the photographic paper starting to breakdown, often due to age, and the way that the photographs have been stored.
A Guide to Underwater Camera Cases
If you are buying a new underwater camera or video camera, you will need an underwater camera case. And this case needs to be watertight, airtight, dustproof, crush resistant and designed to keep your valuable equipment safe from all the elements.
The Best Wildlife Camera To Take On Safari
Good wildlife camera equipment on safari can make the difference between pictures you will be proud to show your friends and family when you get back and ones where it's difficult to figure out exactly what you were photographing because it's only a fuzzy black dot surrounded by green vegetation.I take wildlife photographs for a living and I have had to quickly figure out what the best cameras and lenses are to get the job done effectively.
Let Those Digital Photos Out! (You Don't Have To Print Them Yourself)
What have you done with the photos you've taken with your digital camera? Hands up if they are languishing on your hard drive waiting to be printed. If your hand is up you are not alone.
Digital Cameras Demystified
Demystifying Digital Camera JargonWant to buy a digital camera but confused by the sales jargon? Talk of pixels, LCDs and ELVs, digital zoom verses optical zoom driving you crazy? Then stress no more, here are all the basic terms and their meanings in simple, easily understood terms.Mega pixels:Pixels are just the tiny dots that make up a digital picture.
Black and White is Beautiful
Think about Laurel and Hardy for a moment, or Charlie Chaplin, and even Harold Lloyd. All true examples of early cinema genius.
Easy Tips for Digital Photo Touchups
Using a digital camera to take pictures is great. It's easy and quick.
Tips for Purchasing a Digital Camera Lens
Your lens is an essential element to good photographs. It's not just your camera.
Where to Find Cheap Disposable Cameras
There are many kinds of disposable cameras. All disposable cameras are already inexpensive, but there are some that are even more of a bargain than others.
Digital Cameras vs. Film Cameras- the debate goes on
One of the biggest debates in the photography world is whether digital cameras are better or film cameras better? The answer to this question cannot be answered in a simple yes or no. There are several issues which need to be considered while answering this question.
Selecting Good Stock Photography in the Age of Digital
The business of stock photography has drastically changed over the last few years. Ten years ago, selecting photographs for your brochure or newsletter meant spending hours pouring over stock photography catalogs and ordering photo research to find the exact image.
Buying Your Child A Digital Camera - What You Need To Know
Purchasing any gift item for your child is a mind-numbing task. You can never be sure whether they will like what you buy for them or not.
Types of Digital Cameras
If you are in the market to purchase a digital camera, you have surely seen several different types of cameras. It isnt exactly clear what the differences between the types are, and it can be confusing trying to choose the digital camera thats right for you.
|home | site map|
|© 2006 KeralaClick.com|