Easy Method to Find Dimensions of JPG Image

David T. Ashley · External Since: May 13, 2006 Posts: 10

I've been experimenting with ImageMagick, i.e.

http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/

The one missing element (as I lay out web pages manually) is that I'm not
aware of a command (ImageMagick or other) that will display the pixel
dimensions of a .JPG image.

???

Thanks.

P.S.--All of my photo web pages are really boring and have the same layout,
i.e.

http://www.dtashley.com/photos/2006/pics20060910/index2.php

I normally edit the HTML or PHP on a Linux box, so I'm looking for a command
that I can execute on the Linux box that will give me the dimensions an
arbitrary JPG file.

left_coast · External Since: Jul 19, 2006 Posts: 692

David T. Ashley wrote:

> I've been experimenting with ImageMagick, i.e.
>
> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>
> The one missing element (as I lay out web pages manually) is that I'm not
> aware of a command (ImageMagick or other) that will display the pixel
> dimensions of a .JPG image.
>
> ???
>
> Thanks.
>
> P.S.--All of my photo web pages are really boring and have the same
> layout, i.e.
>
> http://www.dtashley.com/photos/2006/pics20060910/index2.php
>
> I normally edit the HTML or PHP on a Linux box, so I'm looking for a
> command that I can execute on the Linux box that will give me the
> dimensions an arbitrary JPG file.

If you are using php, you can do it with a PHP command:

http://us3.php.net/getimagesize

Chris F.A. Johnson · External Since: Oct 06, 2004 Posts: 589

On 2006-12-29, David T. Ashley wrote:
> I've been experimenting with ImageMagick, i.e.
>
> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>
> The one missing element (as I lay out web pages manually) is that I'm not
> aware of a command (ImageMagick or other) that will display the pixel
> dimensions of a .JPG image.

identify -format '%w %h\n' IMAGE.jpg

--
Chris F.A. Johnson, author | <http://cfaj.freeshell.org>
Shell Scripting Recipes: | My code in this post, if any,
A Problem-Solution Approach | is released under the
2005, Apress | GNU General Public Licence

Michael C. · External Since: Jul 10, 2006 Posts: 29

["Followup-To:" header set to alt.os.linux.]
On Fri, 29 Dec 2006 01:03:18 -0500,
David T. Ashley <dta.RemoveThis@e3ft.com> wrote:
> I've been experimenting with ImageMagick, i.e.
>
> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>
> The one missing element (as I lay out web pages manually) is that I'm not
> aware of a command (ImageMagick or other) that will display the pixel
> dimensions of a .JPG image.

identify -format "%wx%h" image.jpg

identify is part of ImageMagick.

I have a Bash script on my site,

http://mcsuper5.freeshell.org/stripdups/stripdups

that attempts to find duplicate images that uses identify in
multiple places, and creates a webpage. I haven't played with it
in a while, but it worked reasonably well. By default it
requires you to edit a file if dups are found, you delete the
lines for the images you wish to keep.

HTH,

Michael C.
--
mcsuper5.RemoveThis@freeshell.org http://mcsuper5.freeshell.org/

Someone asked me the difference between ignorance and apathy,
I told them I don't know and I don't care.

David T. Ashley · External Since: May 13, 2006 Posts: 10

"Michael C." <mjchappell.DeleteThis@verizon.net> wrote in message
news:slrnep9ep2.3nr.mjchappell@cerberus.softshoppe.net...
> ["Followup-To:" header set to alt.os.linux.]
> On Fri, 29 Dec 2006 01:03:18 -0500,
> David T. Ashley <dta.DeleteThis@e3ft.com> wrote:
>> I've been experimenting with ImageMagick, i.e.
>>
>> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>>
>> The one missing element (as I lay out web pages manually) is that I'm
>> not
>> aware of a command (ImageMagick or other) that will display the pixel
>> dimensions of a .JPG image.
>
> identify -format "%wx%h" image.jpg
>
> identify is part of ImageMagick.
>
> I have a Bash script on my site,
>
> http://mcsuper5.freeshell.org/stripdups/stripdups
>
> that attempts to find duplicate images that uses identify in
> multiple places, and creates a webpage. I haven't played with it
> in a while, but it worked reasonably well. By default it
> requires you to edit a file if dups are found, you delete the
> lines for the images you wish to keep.

Thanks a lot. The Bash script you linked to is a good starting point for
me. I'm trying to do approximately the same thing. I get a bunch of photos
off my digital camera and into a directory, and the first task for me is to
make thumbnails with links and arrange them into a web page. This is very
laborious.

I don't see any need to overcomplicate the matter. If a Bash script has
enough control functionality to make it happen, ... I'm not seeing the need
to use a scripting language or write a 'C' program.

Thanks again.

ray · External Since: Nov 13, 2004 Posts: 3387

On Fri, 29 Dec 2006 13:16:16 -0500, David T. Ashley wrote:

> "Michael C." <mjchappell.DeleteThis@verizon.net> wrote in message
> news:slrnep9ep2.3nr.mjchappell@cerberus.softshoppe.net...
>> ["Followup-To:" header set to alt.os.linux.]
>> On Fri, 29 Dec 2006 01:03:18 -0500,
>> David T. Ashley <dta.DeleteThis@e3ft.com> wrote:
>>> I've been experimenting with ImageMagick, i.e.
>>>
>>> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>>>
>>> The one missing element (as I lay out web pages manually) is that I'm
>>> not
>>> aware of a command (ImageMagick or other) that will display the pixel
>>> dimensions of a .JPG image.
>>
>> identify -format "%wx%h" image.jpg
>>
>> identify is part of ImageMagick.
>>
>> I have a Bash script on my site,
>>
>> http://mcsuper5.freeshell.org/stripdups/stripdups
>>
>> that attempts to find duplicate images that uses identify in
>> multiple places, and creates a webpage. I haven't played with it
>> in a while, but it worked reasonably well. By default it
>> requires you to edit a file if dups are found, you delete the
>> lines for the images you wish to keep.
>
> Thanks a lot. The Bash script you linked to is a good starting point for
> me. I'm trying to do approximately the same thing. I get a bunch of photos
> off my digital camera and into a directory, and the first task for me is to
> make thumbnails with links and arrange them into a web page. This is very
> laborious.
>
> I don't see any need to overcomplicate the matter. If a Bash script has
> enough control functionality to make it happen, ... I'm not seeing the need
> to use a scripting language or write a 'C' program.
>
> Thanks again.

'imageindex' is what I use for doing the thumbnails etc. and making the
web page. See examples at www.rcarter.net/local.html

David T. Ashley · External Since: May 13, 2006 Posts: 10

"Michael C." <mjchappell.RemoveThis@verizon.net> wrote in message
news:slrnep9ep2.3nr.mjchappell@cerberus.softshoppe.net...
>
> I have a Bash script on my site,
>
> http://mcsuper5.freeshell.org/stripdups/stripdups
>
> that attempts to find duplicate images that uses identify in
> multiple places, and creates a webpage. I haven't played with it
> in a while, but it worked reasonably well. By default it
> requires you to edit a file if dups are found, you delete the
> lines for the images you wish to keep.

Thanks. I appreciate it. Your script is a good starting point for me. I
just unload large groups of images from my digital camera and want a
"starting point" web page with thumbnails created.

Peter Kai Jensen · External Since: Oct 23, 2006 Posts: 202

David T. Ashley wrote:

> I don't see any need to overcomplicate the matter. If a Bash script
> has enough control functionality to make it happen, ... I'm not seeing
> the need to use a scripting language or write a 'C' program.

Heh, I'm suddenly reminded of the lesson of Master Foo and the Ten
Thousand Lines:

http://catb.org/~esr/writings/taoup/html/ten-thousand.html

A lesson that all too many people (myself included) forget from time to
time ...

--
PeKaJe

Word is a fine tool when you don't need your output to look identical on
every machine that might use it. -- Erik Funkenbusch, Microsoft apologist

Baron · External Since: Dec 14, 2006 Posts: 12

David T. Ashley wrote:

> I've been experimenting with ImageMagick, i.e.
>
> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>
> The one missing element (as I lay out web pages manually) is that
> I'm not aware of a command (ImageMagick or other) that will display
> the pixel dimensions of a .JPG image.
>
> ???
>
> Thanks.
>
> P.S.--All of my photo web pages are really boring and have the same
> layout, i.e.
>
> http://www.dtashley.com/photos/2006/pics20060910/index2.php
>
> I normally edit the HTML or PHP on a Linux box, so I'm looking for a
> command that I can execute on the Linux box that will give me the
> dimensions an arbitrary JPG file.

In KDE holding the mouse cursor over an image gives me a thumbnail
with all the data inc pixel size !

--
Best Regards:
Baron.

Doug Mitton · External Since: Oct 14, 2005 Posts: 37

"David T. Ashley" <dta.RemoveThis@e3ft.com> wrote:

>I've been experimenting with ImageMagick, i.e.
>
>http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>
>The one missing element (as I lay out web pages manually) is that I'm not
>aware of a command (ImageMagick or other) that will display the pixel
>dimensions of a .JPG image.

If you like a GUI I've been using gThumb as a general image browser.
It also displays specs on the image being viewed.

http://gthumb.sourceforge.net/

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SPAM Reduction: Remove "x." from my domain.
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Allodoxaphobia · External Since: Aug 20, 2004 Posts: 114

On Fri, 29 Dec 2006 01:03:18 -0500, David T. Ashley wrote:
> I've been experimenting with ImageMagick, i.e.
>
> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>
> The one missing element (as I lay out web pages manually) is that I'm not
> aware of a command (ImageMagick or other) that will display the pixel
> dimensions of a .JPG image.

Well, if you are laying out your pages manually, you are also probably
viewing/browsing the images to select the one(s) that concern you.
Viewing the images with konqueror displays the pixel size in the title bar.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: <http//jonz.net/ng.htm>

Baron · External Since: Dec 14, 2006 Posts: 12

Allodoxaphobia wrote:

> On Fri, 29 Dec 2006 01:03:18 -0500, David T. Ashley wrote:
>> I've been experimenting with ImageMagick, i.e.
>>
>> http://www.dtashley.com/howtos/2006/12/imagemagick_thumbnails/
>>
>> The one missing element (as I lay out web pages manually) is that
>> I'm not aware of a command (ImageMagick or other) that will display
>> the pixel dimensions of a .JPG image.
>
> Well, if you are laying out your pages manually, you are also
> probably viewing/browsing the images to select the one(s) that
> concern you. Viewing the images with konqueror displays the pixel
> size in the title bar.
>
> Jonesy

I did point out to the OP that "In KDE holding the mouse cursor over
an image gives me a thumbnail with all the data inc pixel size !"
He probably has the feature turned off !

--
Best Regards:
Baron.