Re: [Gimp-user] Scaling an image down without ruining the text

[Liam R E Quin]

On Thu, 2017-06-15 at 11:01 +0200, CC4581 wrote:
> Hi,
> 
> I have an image that is currently 2590 x 344. It is a footer image to
> be used in auto generated letters for a bespoke CRM system that is
> currently being developed. The required dimensions for the image are
> 790 x 115.

Then develop the CRM system to support SVG vector images, or to be able
to add text to an image on the fly (e.g. see the gd library).


> Unfortunately, when I scale the image down to these dimensions,

As others pointed out, you can't scale down 2590x344 to get to 790x115
without adding distortion.

Make your larger image be a whole-number multiple of your target size -
ideally a power of two larger (2, 4, 8, 16...). It will scale don a LOT
better. For example, 3160 x 460 pixels (4 * 790, 4 * 115). If there was
a typo in your mail and you didn't mean 790x115, use 4 times the size
you meant :-)

Then use tool options to try the various different scaling algorithms
to see which is best. For Gimp 2.8 I'd likely do
(1) flatten the image
(2) gaussian blur 3x3
(3) scale down with "cubic" or "lancsoz" (experiment to compare)
(4) filters->enhance->sharpen (in 2.8 this is better than unsharp mask,
or I found it so, for this application).

For gimp 2.8 try without doing the blur first, and then try unsharp
mask after.

Then export, then undo to get back to having multiple layers.

You could also add the text later. For www.fromoldbooks.org I add the
text to the images using ImageMagick.

Liam


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Liam R E Quin 

Web slave for fromoldbooks.org
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Re: [Gimp-user] Cannot install program

[Jernej Simončič]

On Thu, 15 Jun 2017 00:55:09 +0200, empty_search wrote:

> I downloaded the latest version of GIMP on my Windows 7 64-bit  machine.  
> When I
> try to install it, a box pops up which says "Error - This program requires
> Windows Service pack 3 or later.  As far as my computer is concerned, I am
> completely updated in terms of updates.  I have also looked for a Service 
> Pack 3
> for Windows 7 and cannot find one.

This sounds like you're running the installer in XP compatibility mode -
check the installer's properties (the Compatibility tab).

-- 
< Jernej Simončič ><><><><>< http://eternallybored.org/ >

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Re: [Gimp-user] Scaling an image down without ruining the text

[Rick Strong]

Try making your image at a very high DPI, say 1200 for text.
Or, when you scale down, make it 1200 or 2400 DPI.
Or, my choice, use a free vector editor like Inkscape and a hi-rez image 
behind the text at final size.


Rick S.

-Original Message- 
From: CC4581

Sent: Thursday, June 15, 2017 5:01 AM
To: gimp-user-list@gnome.org
Cc: notificati...@gimpusers.com
Subject: [Gimp-user] Scaling an image down without ruining the text

Hi,

I have an image that is currently 2590 x 344. It is a footer image to be 
used in

auto generated letters for a bespoke CRM system that is currently being
developed. The required dimensions for the image are 790 x 115.

Unfortunately, when I scale the image down to these dimensions, the text
included on the image degrades and becomes completely unreadable. The entire
image also loses quality which isn't really acceptable, I need it to retain 
the

quality and the text to remain legible when scaling the image down.

Hope someone can help me out!

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[Gimp-user] Cannot install program

[empty_search]

>The SP3 requirement was for M$ WindowsXP
>
>Check your computer using Control Panel -> System & Security -> See
>the name of this computer
>
>Which should get you an information panel as the attached screenshot.
>
>My advice,
>
>Make sure you get the Gimp installation file from www.gimp.org
>
>Do not try and install using any of the Windows 'legacy' options, just
>run the installer, just use the default settings for locations etc.
>
>A short video on installation, uses Win10 but Win7 is exactly the
>same.  https://www.youtube.com/watch?v=klV_1PslFG4
>
>Of course you might have already done all that, in which case give
>details of your exact installation and computer. Maybe someone can
>help.
 
Thanks for the feedback.  On a whim I tried to open the download this morning
again and, voila, it worked.  I guess it decided that this isn't an XP edition
of Windows after all.

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[Gimp-user] Scaling an image down without ruining the text

[rich2005]

>Hi,
>
>I have an image that is currently 2590 x 344. It is a footer image to
>be used in auto generated letters for a bespoke CRM system that is
>currently being developed. The required dimensions for the image are
>790 x 115.
>
>Unfortunately, when I scale the image down to these dimensions, the
>text included on the image degrades and becomes completely unreadable.
>The entire image also loses quality which isn't really acceptable, I
>need it to retain the quality and the text to remain legible when
>scaling the image down.
>
>Hope someone can help me out!

Gimp is a raster editor (bitmap) editor any scaling up or down degrades the
image. Scaling down will 'throw' pixels away.

What might be possible and depending on the complexity of the image, is remove
somehow, usually 'clone-out' the text leaving the background and re-make the
text in the smaller image.

There is a practical limit on this, I would say anything smaller than 20 pt
(that is point not pixels) in the original is too small. 20 pt in the larger
image roughly equates to 8 pt in the smaller size.

notes: 

2590x344 uniformly scales to 790x105 not 790x115

Avoid exporting in jpeg format, that introduces artefacts around small text, try
png.

What is the size of the printed letter? 790 pix is about 1/3rd the width of a
regular Gimp 300 ppi US letter template. 790 pix width for a footer seems small
to me.

Could you re-work your image in vector SVG format? Will that be acceptable to
your software? It might scale in the printed document better than a raster
image.

Attachments:
* http://www.gimpusers.com/system/attachments/612/original/2590x344.jpg
* http://www.gimpusers.com/system/attachments/613/original/790x115.png

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[Gimp-user] Scaling an image down without ruining the text

[CC4581]

Hi,

I have an image that is currently 2590 x 344. It is a footer image to be used in
auto generated letters for a bespoke CRM system that is currently being
developed. The required dimensions for the image are 790 x 115.

Unfortunately, when I scale the image down to these dimensions, the text
included on the image degrades and becomes completely unreadable. The entire
image also loses quality which isn't really acceptable, I need it to retain the
quality and the text to remain legible when scaling the image down.

Hope someone can help me out!

-- 
CC4581 (via www.gimpusers.com/forums)
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[Gimp-user] Move tool locks; what's triggering it?

[nateart]

thanks...
>These comments are correct
>However, it is the manufacturers, publishers of the products (jigsaw puzzles,
posters, products, greeting cards, and magazine ads with their ad specs etc) who
specify the specifications for the imagery they will use. And... the licensing
agents are aware of these specifications and will therefore not submit work to
these clients that does not comply.
>Often when creating the images, I take the following steps to assist in a
better workflow to stay within the abilities of my system and software =
>1. I work different parts of an image independently, combining them (in layers,
flattening) near completion to speed up processing
>2. I save often, and will combine layers on some of the iterative versions...
if something needs to be corrected, I can go back a version without needing to
start from scratch (painful lessons learned)
>3. I have 16 gigs of ram, running windows 10, 64 bits, x64 processor. Yes, more
is better... budget allowing
> I like your suggestions and comments and always welcome them  
++
>Yes. I routinely work with print-sized images at 2400dpi (and then
>make
> lower-resolution versions of cropped details to sell). But I use a
>Linux system. Usually I have only one layer.
>
>As others have said, the tile cache size matters most - set it to
>maybe
>three quarters or your machine's memory.
>
>Actually buying more memory is often a really cost-effective upgrade
>for a computer. I have 32GBytes of RAM on this system, and for very
>large images (say, 6 gigabytes) sometimes have to quit other programs
>and work in small stages.
>
>GIMP reports the memory size of the image in the title bar and/or
>status bar. If you open the undo history there's a button at lower
>right (in the English locales at least; in Hebrew or Arabic it might
>be
>at lower left) which clears the undo history - this throws away the
>memory of what you did, so don't do it if you think you might need to
>undo what you've already done. But it saves a lot of memory to do this
>every now and then, especially after making several selections in a
>row
>or doing anything that affects the whole image, like "curves".
>
>When you end up "stuck with the move tool" do the menus still work? If
>you wait for 10 minutes or so, do you get "GIMP is not responding"
>popping up? It's possible it's just taking a very very long time.
>Moving an image-sized layer can mean loading the entire image into
>memory a piece at a time to update the on-screen preview.
>
>Liam

Attachments:
* http://www.gimpusers.com/system/attachments/610/original/NATOWE119902.jpg

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[Gimp-user] Cannot install program

[rich2005]

>I downloaded the latest version of GIMP on my Windows 7 64-bit 
>machine.  When I try to install it, a box pops up which says "Error -
>This program requires Windows Service pack 3 or later.  As far as my
>computer is concerned, I am completely updated in terms of updates.  I
>have also looked for a Service Pack 3 for Windows 7 and cannot find
>one.
>
>Hope that someone can explain what I am doing wrong.

The SP3 requirement was for M$ WindowsXP

Check your computer using Control Panel -> System & Security -> See the name of
this computer

Which should get you an information panel as the attached screenshot.

My advice,

Make sure you get the Gimp installation file from www.gimp.org

Do not try and install using any of the Windows 'legacy' options, just run the
installer, just use the default settings for locations etc.

A short video on installation, uses Win10 but Win7 is exactly the same. 
https://www.youtube.com/watch?v=klV_1PslFG4

Of course you might have already done all that, in which case give details of
your exact installation and computer. Maybe someone can help.

Attachments:
* http://www.gimpusers.com/system/attachments/611/original/win7.jpg

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[Gimp-user] Cannot install program

[empty_search]

I downloaded the latest version of GIMP on my Windows 7 64-bit  machine.  When I
try to install it, a box pops up which says "Error - This program requires
Windows Service pack 3 or later.  As far as my computer is concerned, I am
completely updated in terms of updates.  I have also looked for a Service Pack 3
for Windows 7 and cannot find one.

Hope that someone can explain what I am doing wrong.

-- 
empty_search (via www.gimpusers.com/forums)
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[Gimp-user] Move tool locks; what's triggering it?

[OldPhotog]

In my case, the files are not especially large. They are jpgs right out of an
older Canon Rebel, something like 36x24 inches @ 72 ppi, one layer, at the most
two.
I'll keep an eye on the problem and see if I can isolate a particular command
sequence triggering it.

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