Mike Chaney's Tech Corner
December 27, 2024, 02:38:58 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Qimage registration expired? New lifetime licenses are only $59.99!
 
   Home   Help Login Register  
Pages: [1]
  Print  
Author Topic: Qimage Sharpening Methods  (Read 6347 times)
JimH
Newbie
*
Posts: 22


« on: January 06, 2012, 10:29:48 PM »

I would like to know something more about the sharpening method that is just to the right of Fill Light in the Batch Filter.  There is much discussion of Unsharp Mask, Smart Sharpening, and now Tone Targeted Sharpening in the help files and online but I have never seen an explicit discussion (or even any explicit mention) of the "plain old sharpen" function.  What method is being used?  What advantages or disadvantages does it have compared to USM?  That kind of discussion is what I'm looking for.

Sorry if I'm missing something here.  I have done searches and have come up with nothing.

JimH
Logged
Fred A
Forum Superhero
*****
Posts: 5644



WWW Email
« Reply #1 on: January 06, 2012, 11:14:47 PM »

Quote
I would like to know something more about the sharpening method that is just to the right of Fill Light in the Batch Filter.  There is much discussion of Unsharp Mask, Smart Sharpening, and now Tone Targeted Sharpening in the help files and online but I have never seen an explicit discussion (or even any explicit mention) of the "plain old sharpen" function.  What method is being used?  What advantages or disadvantages does it have compared to USM?  That kind of discussion is what I'm looking for.

Jim,
I used to know the exact numbers to the answer, but right now I can say that the Sharpen control that you refer to is a regular application of the unsharp mask in steps. I just don't recall the strength or radius numbers.
You can use that control... no problems.
I use it for a standard kick to sharpen a document or a scan of something.
I could use it on images, but I have more fun with Tone Targeted Sharpening.

Just for fun, Jim try the regular Unsharp mask with a setting of Radius 6 and strength 50   

Fred
Logged
JimH
Newbie
*
Posts: 22


« Reply #2 on: January 07, 2012, 12:20:20 AM »

Thanks, Fred.

I thought perhaps it was an implementation of some other sharpening method than USM.  I'll take your suggestion and play around with it some more along with USM.

JimH (in Texas)
Logged
Terry-M
The Honourable Metric Mann
Forum Superhero
*****
Posts: 3251



WWW
« Reply #3 on: January 07, 2012, 10:06:43 AM »

Quote
but I have more fun with Tone Targeted Sharpening.
Jim,
You can see a video about TTS here http://www.youtube.com/watch_popup?v=xn7Ipw8IAhQ&vq=hd720
Terry
Logged
JimH
Newbie
*
Posts: 22


« Reply #4 on: January 07, 2012, 03:03:27 PM »

Terry,

Yes, I have watched that video and almost all the rest.  They are very good and informative and I have enjoyed them.

But my question was about "plain old sharpening".  I still wonder why it is not mentioned anywhere in the help files or in the videos to my knowledge.  I have used it often and with good results.  Whenever I am using some function, I can always observe the results and draw my own conclusions but it helps to know what that function is doing and, to a degree, how it is doing it.   I appreciate Fred's answer that it is just an easier-to-use implementation of USM and that scratches most of my itch but the more information the better.

JimH
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!
Security updates 2022 by ddisoftware, Inc.