Suggestions for image resizing
Cyberdine
I need to batch resize a group of images from the command line. I'm not
having any luck finding a program that can do this without keeping the
original aspect ratio. Any suggestions?
--- Synchronet 3.13a-Win32 NewsLink 1.83
Cyberdine Systems BBS -[ telnet://cyberdine.servegame.com]-
foxidrive
> To: alt.msdos.batch
> I need to batch resize a group of images from the command line. I'm not
> having any luck finding a program that can do this without keeping the
> original aspect ratio. Any suggestions?
Irfanview?
Timo Salmi
> On Sun, 23 Apr 2006 01:52:17 GMT, Cyberdine wrote:
>> I need to batch resize a group of images from the command line.
>> I'm not
> Irfanview?
A good suggestion, but I even if I have it installed myself, I have
no knowledge if it can resize from the command line. And if so, how.
Anybody?
All the best, Timo
--
Prof. Timo Salmi ftp & http://garbo.uwasa.fi/ archives 193.166.120.5
Department of Accounting and Business Finance ; University of Vaasa
mailto:t...@uwasa.fi <http://www.uwasa.fi/~ts/> ; FIN-65101, Finland
Useful batch files and tricks ftp://garbo.uwasa.fi/pc/link/tsbat.zip
foxidrive
> foxidrive wrote:
>> On Sun, 23 Apr 2006 01:52:17 GMT, Cyberdine wrote:
>>> I need to batch resize a group of images from the command line.
>>> I'm not
>
>> Irfanview?
>
> A good suggestion, but I even if I have it installed myself, I have
> no knowledge if it can resize from the command line. And if so, how.
> Anybody?
>
> All the best, Timo
Here's a quick and dirty batch I had laying around - Lines will wrap.
There is a file in the irfanview folder outlining the command line options.
@echo off
if [%1]==[/?] echo. Purpose: convert/recompress graphic files with Irfanview
if [%1]==[/?] echo.
if [%1]==[/?] echo. Syntax: %0 [filespec.ext extension]
if [%1]==[/?] echo.
if [%1]==[/?] echo. example: %0 *.gif jpg
if [%1]==[/?] echo.
if [%1]==[/?] echo. with no parameters it defaults to all JPG in the current directory
if [%1]==[/?] echo. with ! as a parameter it resamples all JPG to 1024*768
if [%1]==[/?] echo. with !! as a parameter it resamples all JPG to 800*600
if [%1]==[/?] echo.
if [%1]==[/?] echo. (files are saved in .\!convert folder)
if [%1]==[/?] echo.
if [%1]==[/?] goto :EOF
if not [%2]==[] start "" /w "c:\Program Files\Iview32\i_view32.exe" .\%1 /convert=!convert\*.%2
if not [%2]==[] echo Done! & goto :EOF
if not [%1]==[!] if not [%1]==[!!] if not [%1]==[] %0 /?
echo processing *.JPG in the current directory
if [%1]==[!!] start "" /w "c:\Program Files\Iview32\i_view32.exe" .\*.jpg /resample=(800,600) /aspectratio /jpgq=80 /convert=!convert\*.jpg
if [%1]==[!] start "" /w "c:\Program Files\Iview32\i_view32.exe" .\*.jpg /resample=(1024,768) /aspectratio /jpgq=80 /convert=!convert\*.jpg
if [%1]==[] start "" /w "c:\Program Files\Iview32\i_view32.exe" .\*.jpg /jpgq=80 /convert=!convert\*.jpg
echo Done!
Sjouke Burry
Alchemy Mindworks
Creator of graphic and desktop applications for business, school and
home. Software to edit and manage image files and TruType fonts.
www.mindworkshop.com/alchemy/alchemy.html
I am just a (retired) user for some years.
Ted Davis
> To: alt.msdos.batch
>I need to batch resize a group of images from the command line. I'm not
>having any luck finding a program that can do this without keeping the
>original aspect ratio. Any suggestions?
ImageMagick (<http://www.imagemagick.org/script/index.php>). There
isn't much you *can't* do with images from the command line using the
tools in this package. It's free and open source.
convert -resize 5% foo bar
will make a 5% thumbnail of foo as bar - the format can be changed in
the process. Note: when running multiple processes on JPEGs, have the
first convert command also convert to a bitmapped format such as PSD
and the last one convert back to JPEG to avoid loosing too much
picture quality.
You can also specify an absolute image size
convert -resize 200x300 foo bar
to change the aspect ratio.
I use utilities from the package with batch files and gawk scripts
to rotate, resize, add date/time stamps, and add comments (JPEGs).
The latest work can be seen by clicking on the "Toomey Hall
construction pictures" link on my WildBlue home page:
<http://users.wildblue.net/daviste/>. (Avoid the "Annex" link because
it has over 300 images on it - the "Toomey" page has only 85 as of
last Friday.)
--
T.E.D. (tda...@gearbox.maem.umr.edu)
Timo Salmi
> On Sun, 23 Apr 2006 14:27:59 +0300, Timo Salmi wrote:
>> foxidrive wrote:
>>> Irfanview?
>> A good suggestion, but I even if I have it installed myself, I
>> have no knowledge if it can resize from the command line. And if
>> so, how.
> Here's a quick and dirty batch I had laying around - Lines will
> wrap. There is a file in the irfanview folder outlining the
> command line options.
Excellent. Thank you. This was exactly the kind of information I
needed to get going. Your posting made me look again at the Irfanview
help and I then saw the list of the Command Line Options. I had
missed it earlier. That was crucial.
Timo Salmi
> foxidrive wrote:
>> On Sun, 23 Apr 2006 14:27:59 +0300, Timo Salmi wrote:
>>> foxidrive wrote:
>>>> Irfanview?
> Your posting made me look again at the Irfanview help and I then
> saw the list of the Command Line Options. I had missed it earlier.
> That was crucial.
Below is what I subsequently wrote to make 80x60 images from a set of
digicam photos. I am including alt.msdos.batch.nt and redirecting
followups since my solution is for the XP.
@echo off & setlocal enableextensions
::
echo +----------------------------------------------------------+
echo : IRSCALED.CMD Resize a set of .jpg images to 80x60 pixels :
echo : By Prof. Timo Salmi, Last modified Sun 23-Apr-2006 :
echo +----------------------------------------------------------+
echo.
::
:: Set the defaults
set ir="C:\Program Files\IrfanView\i_view32.exe"
set sourceDir=C:\_L\VALITYS
set targetDir=C:\_L\VALITYS\SCALED
set sourceDir=C:\_M
set targetDir=C:\_M\SCALED
set pixW=80
set pixH=60
::
:: Is help needed
if "%~1"=="?" goto _help
if "%~1"=="/?" goto _help
if /i "%~1"=="/help" goto _help
::
:: If necessary, create the target folder
if not exist %targetDir% mkdir %targetDir%
::
:: Convert with Irfanview command line
rem Add /aspectratio if you want to force keeping the image
proportions
for %%f in (%sourceDir%\*.JPG) do (
start "" /wait %ir% %%~ff /resample=^(%pixW%,%pixH%^) /jpgq=75
/convert=%targetDir%\%%~nf.scaled%%~xf
)
::
:: Show the results
dir %targetDir%
goto _out
::
:_help
echo Usage: IRSCALED
echo.
echo Default source folder: %sourceDir%
echo Default target folder: %targetDir%
::
:_out
endlocal & goto :EOF
All the best, Timo
--
Prof. Timo Salmi ftp & http://garbo.uwasa.fi/ archives 193.166.120.5
Department of Accounting and Business Finance ; University of Vaasa
mailto:t...@uwasa.fi <http://www.uwasa.fi/~ts/> ; FIN-65101, Finland
Useful script files and tricks ftp://garbo.uwasa.fi/pc/link/tscmd.zip
charles
<cybe...@cyberdine.servegame.com.remove-v9b-this> wrote:
> To: alt.msdos.batch
>I need to batch resize a group of images from the command line. I'm not
>having any luck finding a program that can do this without keeping the
>original aspect ratio. Any suggestions?
Take a look at NConvert from Pierre Gougelet who also produces XnView
<http://perso.wanadoo.fr/pierre.g/xnview/en_nconvert.html>
Not open source but it is free (non-commercial use).