[magick-users] Montage - simple resolution question.

[gertjan hofman]

Fred, Anthony,

Thanks for the responses.   I am still very puzzled.

The suggestion to use convert -append works fine i.e. :

  convert d_6.jpg d_7.jpg d_8.jpg d_9.jpg  -append out.jpg

the images maintain their original resolution. All thats missing now is a
way of introducing some space between the tiles (-geometry does a different
thing here than in montage I believe).  I guess I can add a border prior to
the append operation.

But the examples of montage fail as before:

 montage d_6.jpg  d_7.jpg d_8.jpg d_9.jpg -tile 1x  out.jpg

resamples the image to a fraction of the resolution. Its not related to the
output file (whether its ps or jpg) and I am using V6 on the latest release
of Ubuntu.

The examples on   http://imagemagick.org/Usage/montage/ arent all that
useful here because they do not show the original images so I can not tell
if the resolution is preserved.

What puzzles me is that these program are so widely used,  *it must* be
something trivial that I am doing wrong.

Any other tips are appreciated

Cheers

Gertjan





On Feb 12, 2008 6:36 PM, Anthony Thyssen <anthony at griffith.edu.au> wrote:

> "gertjan hofman" on  wrote...
> | Dear ImageMagick users
> |
> | This is probably a trivial question, but I just can not get montage to
> | do the simplest things.
> |
> | I have 4 gif images, 600x200 pixels. I would like them stacked on a
> | page (1 colum, 4 rows). No matter what option
> | (density, page size, geometry, resample) i play with the result is
> | always that the images are resampled at very low resolution into the
> | output file
> |
> | i.e. the original 600x200 resolution is lost.
> |
> | I have tried things like:
> |    montage d1.gif d2.gif d3.gif d4.gif -page A4 -tile 1x4 -geometry
> | +2+2 hello.ps
> |
> | or adding -density 100 etc. I can change the overal output file size,
> | but I always end up with fuzzy images on a page.
> |
> | It doesn't really matter what the starting images are or what format.
> | I am missing some fundamental understanding of what montage is doing.
> |
> | Can someone post a simple example for me ?
> |
> The option is -tile but your example was using it.
>
> Your -geometry option should turn off any resizing of the image
> The -page A4 should not effect anything as you have set it AFTER
> reading the images.
>
> Examples of montage usage is in IM Examples, Montage
>   http://imagemagick.org/Usage/montage/
> The images shown IS what the listed code actually produces, as that code
> is extracted from the HTML page and executed to produce those images.
>
> I think however the first thing you need to do is check...
>
>              What version of ImageMagick are you using?
>
> It's odd behaviour sounds more like version 5 problems of ImageMagick
> that existed before the command line handling was overhauled for IM v6
>
>
>
>  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
>
>  -----------------------------------------------------------------------------
>   "Oh, the pain... the pain of it all!"  -- Doctor Smith, Lost in Space
>
>  -----------------------------------------------------------------------------
>     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/<http://www.cit.gu.edu.au/%7Eanthony/>
>



-- 

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Gertjan Hofman
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http://koslx1.triumf.ca/gertjan
604-982-3574
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