The Cover Project

General Category => General Discussion => Topic started by: Tech13 on May 26, 2018, 04:24:45 PM

Title: can my printer descreen?
Post by: Tech13 on May 26, 2018, 04:24:45 PM

So I am interested in scanning and I would like to explore Descreening but I am having trouble finding the settings or even if I can.

PIXMA MG7720  is the printer I have.

Title: Re: can my printer descreen?
Post by: Arseen on May 27, 2018, 01:23:06 AM

Canon printer should have it.
It's called de-rasterize in Canon utility.

Title: Re: can my printer descreen?
Post by: Tech13 on May 27, 2018, 10:52:37 AM

I can not seem to find the setting. Maybe I just have a bad software version.  No updates are available.
I did find a thing in Adobe photoshop filter > Blur > Gaussian Blur and it makes thing better but I have no idea if this is considered acceptable.

Title: Re: can my printer descreen?
Post by: Arseen on May 27, 2018, 01:21:43 PM

I'll have to go to work now, but I'll try to remember to take screenshots of the Canon program's interface to show where everything is.

Gausian blur can work if used properly but but it can also screw things bad and result is rarely as good as descreen scan.

Title: Re: can my printer descreen?
Post by: Martwansito on May 27, 2018, 04:17:53 PM

I'd be interested in this topic as well. I've done about 500 scans (boxes, manuals...), and the vast majority of them have the same problem: Moiré patterns.
Can't tell the printer model right now... My native software includes descreen option, but it drops the image quality from 600dpi to 300 or less... (600 is the maximum resolution allowed).
As a result, I found that in my case the best option is to scan it at 600dpi, and then do some little arranges in Photoshop: Blur and a free plugin called Fourier Transform works acceptable.
I do think that descreen applies by itself some sort of Blur combined with other filters, but if your printer is good enough, you should be able to obtain better scans than me (the printer is one of the most important factors here, I suppose!).
Dustin Hubbard from the site Gaming Alexandria has published tons of my scans, but there you can see no moiré patterns in them; he has some not free software that descreens pretty well, but unfortunately I don't know which one it is. If you do your research, you'll probably find out about it, but I'm sure that it will be kinda expensive  ;D
Can you tell us wich software are you using??
"Saludos" from Spain!

Title: Re: can my printer descreen?
Post by: ShoothimNow on May 27, 2018, 05:15:21 PM

either 1) use VueScan or 2) snap a screenshot of your scanner program options and post it up here for us to see.  we will let you know.

Your scanner will scan with descreen, but will your software allow it, thats the question

Title: Re: can my printer descreen?
Post by: wiggy on May 27, 2018, 07:16:10 PM

“Surface Blur” in photoshop should become your new best friend.