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  1.    21 Jun 2017 #21
    Join Date : Mar 2016
    Posts : 137
    Windows 10
    Thread Starter

    Thanks for that, typically it is that one image that I am interested in, but I can't see any way to sharpen it enough to be able to read the text.
      My ComputerSystem Spec
  2.    22 Jun 2017 #22
    Join Date : Jun 2015
    UK
    Posts : 2,096
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    What you need to do from a scientific perspective is to deconvolve the image for which you need some idea of the characteristics of the blurring function. See https://en.wikipedia.org/wiki/Deconv..._other_imaging Simple image enhancement just uses variations of high pass filtering which tend to boost the image noise. Some photo processing programs like Lightroom have better tools where you can mask the areas requiring sharpening. Search for free deconvolution software if you feel like experimenting. I'll try Lightroom for you if you can post a higher resolution image.
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  3.    22 Jun 2017 #23
    Join Date : Oct 2013
    Newport, South Wales, UK
    Posts : 1,817
    Windows 10 Pro x64 FCU - XP/Vista/Win7/Win8.1 in VM for testing

    First of all do any conversions you need but forget PNG or JPG as these are designed to create and image for use on the web where the resolution of screen and thus the picture is quite low (72DPI for Apple and 96DPI for Windows ), I would suggest that you only make one conversion step to Uncompressed TIFF format or at least keep conversions to an absolute minimum as each conversion degrades the image .

    The basic Lightroom tools for image manipulation are also available in Adobe Bridge (as part of the Camera Raw package) - Unlike lightroom and Photoshop, Bridge is available free of charge Its True: Adobe Bridge CC Is Completely Free for Everyone, for Life! | ProDesignTools

    I sharpen images by use of a combination of the Sharpening and Noise Reduction tools

    Always work on a 100% view of the image as any other will not show the real state of the pixels

    With adobe tools the both mentioned have a range of 0 - 100, (I assume %), what I have found is the best image result is achieved by making the total of the two tools equal 100, ie use the sharpen tool and set to eg 55, then use the Noise reduction and set this to 45 - play about with these values to give the best image you can - Both of the tools have other controls which control the area of influence of the tool and these can be adjusted to suit.

    Always remember to regularly switch image size to your required output size to show the actual progress.

    Free graphics packages such as GIMP - GNU Image Manipulation Program may also have reasonable tools for this task, and there is also, the now free, (thanks Google), Google Nik Collection but this needs a container application to use their Sharpener Pro, (time to check out the 30 Day Free trial of Lightroom or Photoshop Maybe ? )
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  4.    22 Jun 2017 #24
    Join Date : Oct 2013
    Newport, South Wales, UK
    Posts : 1,817
    Windows 10 Pro x64 FCU - XP/Vista/Win7/Win8.1 in VM for testing

    I have just checked and Have found that the Google Nik Collection is compatible with Bridge, in addition to Photoshop and Lightroom, So if you install bridge and then install the NIK tools you will have free access to the NIK tools including Sharpener pro and dFine, (Noise Reduction).
      My ComputerSystem Spec
  5.    22 Jun 2017 #25
    Join Date : Mar 2016
    Posts : 137
    Windows 10
    Thread Starter

    Thanks for that, I will have a look.........
      My ComputerSystem Spec
  6.    22 Jun 2017 #26
    Join Date : Dec 2013
    Portsmouth Hampshire
    Posts : 1,829
    Windows 10 x86 14383 Insider Pro and Core 10240

    Drawing 433971 | National Trust Collections seems to be the image you are interested in, which they make available on that page as a "low res image".

    "SummaryAn ink and wash plan headed, 'Belton House Ground Plan', Showing out buildings with drains, culverts, fire mains, river and spring water services, cess pools, emptying valves and stop cocks etc. Linen backed paper and signed R. Basford, Clerk of Works, Brownlow Estate, Belton. 2nd October 1935.
    View more details"

    Like many National Trust Images, and other assets in their collections, they offer the image for sale to raise funds for maintenance of properties, land and their contents, with an "Order this image" link on the page link above.

    That may be the only way you can obtain a legible legitimate copy.
      My ComputersSystem Spec
  7.    22 Jun 2017 #27
    Join Date : May 2015
    Posts : 1,645
    Win 10 X64 Pro 15063

    Yikes. If the file has artifacts like those in JPEGs, sharpening it will probably yield a real mess.
      My ComputerSystem Spec

 
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