de-moire'ing

[rwhager3]

i am useing an HP All-In-One 3150 and am having trouble with a strong moire' ( whatever that is? ) i went into my scanner preferences to see about enabling the de-moire function but couldn't find one. Can anyone help me? thanks in advance for any help Rob

[Adrian]

Moire pattern is a well known problem when scanning printed material. It can be easily solved by enabling the de-moire or descreen option in your scanning software (sometimes under advanced options).

You can read more about the problem and its solution in http://www.scantips.com/basics06.html

Strong Moire pattern:
http://www.scantips.com/g1/m50no.jpg http://www.scantips.com/g1/m150no.jpg

Same scan with descreen filter enabled:
http://www.scantips.com/g1/m50mag.jpg http://www.scantips.com/g1/m150mag.jpg

[bigtraceyd]

Wow, you learn something new every day, and i thought that my scanner was just useless, well you live and learn...

[rwhager3]

huh? what does that have to do with de-moireing?

[rwhager3]

no not that post. someone else had put a post saying something totally unrelated and that was what i was wondering about,,looks like that post was removed now tho

[bigtraceyd]

Well I think that Tracey thought her Scanner was on the way out , but after read the above has fixed her scans :D


Thankyou for standing up for me, yes that was the reason i posted, my scanner was just about to get thrown out, but after reading the posts, i managed to sort it, and save myself a little bit of money. So again thanks, just goes to show you shivelry aint dead. Lol.

I didnt think that the post was referring to me though, as it was posted after a little spam, which i removed. Again thanks, ian.

[Bobble]

I am a little surprised this series of posts deal with moire so lightly.As I mentioned in another post but not in this section basic scanner settings must only have the advanced descreen enhancement ticked.However even with this moire will still be visible.The best way is to use photo shop and gaussian blur and remove completly whilst editing and templating your scan however there are many programs around that will do it all for you with a couple of mouse clicks.This program however will remove the noise from your scan but will not make it straight and in correct alignment for the spines etc.

The program is called Akvis Noisebuster

There is a simple write up about the program and the editing software it is compatible with.

Noise Buster v.6.0

Noise Reduction Software



No more noise on your digital pictures!
Digital cameras opened the door to easy and entertaining photography. However, consumer digital cameras also have their drawbacks: they often produce the so-called digital noise. It can be seen as grains that compromise the smoothness of the photo. It is especially annoying on the skin as it makes it uneven. This kind of noise is called luminance noise. There can also be chroma (color) noise which is perceived as random red and blue pixels spoiling the color accuracy of the snap-shot.
Digital noise can be produced by a number of factors: heating of the camera sensor, long exposure shooting, small pixel size (therefore digital compact cameras generate much noisier images than digital SLRs), high ISO settings, etc.
AKVIS Noise Buster reduces both luminance and color noise on digital images without spoiling other aspects of the photo. Now your photos look neat and accomplished.
The automatic settings usually give a good result. If not quite satisfied, you can tweak the parameters observing the changes in real time in the preview window. The program's window shows Before and After images for comparison. You can switch between the windows with a click on the image.
Separate setting areas for luminance and chroma noise allow you to deal with each kind of noise in the most efficient way. For further adjustment you have a few advanced parameters at your disposal.
The histogram displaying the noise level and noise components of the loaded image will help you to adjust settings.
AKVIS Noise Buster is available in two editions: as an independent application (standalone) and as a plug-in to a photo editor: Adobe Photoshop, Photoshop Elements, Corel (Jasc) Paint Shop pro, etc.
The plug-in version of Noise Buster offers Batch Processing support that allows you to automatically convert a series of images. Just create an Action in Photoshop or a Script in Corel Paint Shop Pro and apply the plug-in with the same settings to a folder full of images.
The program is equally useful both for professional and home users.



Works great and saves lots of time once you have had a play and get your settings right which are quite simple to do.


Bobble :D

[Bobble]

Do any here use Adobe PS CS2 or higher? Are you aware you can create simple templates in the prog and use them to template your raw scanned cover? Once on the template and the image is correctly cropped and straight you can warp all aspects especially the spine to conform to a perfect cover.Also Disc labels as well.Once the raw scan is templated correctly and you then use akvis noisebuster to clean the moire ( moire is also a by product of scanning at 600 dpi which is the best way to scan)The template you can create can be at 300 dpi,you can then introduce your 600 dpi raw to it.As mentioned before warp (right click of the mouse) the cover into shape and then save.Once saved you will need to edit it the cover.In photoshop once you have opened the cover select increase contrast by 10% the click control+l and move the pointer to the first line this will establish an overall correctness to the colour and tone of your scan.Next select control+m in this you will have 3 ink droppers,you only need to use 2 Black and White.True black is 0-0-0 and tru white is 255-255-255 rgb.Select the white dropper and click it over a white portion of the cover this should then make all white true white.Do the same with the Black dropper and select a part of your cover that is black usually the barcode is ok for all of this.

Once you have done all of this you should end up with a pretty good cover.

Regards

Bobble