Re: Image processing module?

["M. Edward (Ed) Borasky" <znmeb@...>]

There's also SWIG, of course - http://www.swig.org/Doc1.3/Lua.html.
Rather than "shell out" to a command-line utility, just wrap the
underlying image processing libraries with SWIG and pass objects to
and from them.

On Thu, Aug 30, 2012 at 12:08 PM, Dirk Laurie <dirk.laurie@gmail.com> wrote:
> 2012/8/30 steve donovan <steve.j.donovan@gmail.com>:
>> On Wed, Aug 29, 2012 at 7:09 PM, Dirk Laurie <dirk.laurie@gmail.com> wrote:
>>> I don't mean bindings to a C library that forces you to think in C
>>
>> Amen to that!
>>
>> Image manipulation is such a big thing. Although if one had the
>> kitchen-sink ImageMagick convert program around, it would be possible
>> to write a nice wrapper that understood this tool and all its options.
>>
>
> The approach taken in Octave is: use Magick's library only to read and
> write images, and keep them internally as matrices, using Gnuplot, XView
> or whatever to render them.
>
> It might be an idea to hook on to gsl-shell (Francesco Abbate's replacement
> for the luajit interpreter offering some very convenient interfaces to the GSL).
>
> gsl-shell has a luajit cdata type (from Gnu Subroutine Library) for a
> matrix and
> a userdata type (from Antigrain Geometry) for a vector graphics object.  It can
> render and write vector graphics objects (SVG and bitmap) but not read them.
>
> It should not be insuperably hard or tedious to add just the abilities
> to read and
> write pixel matrices via Magick and render them, plus the small number of
> functions required to support image processing at the same functionality as
> Octave.  Total size of module: about 20 functions.
>
> It will be orders of magnitude more tedious (though not really harder)
> to provide an interface to the image processing abilities of Magick or VXL
> but that's not what I'm looking for.
>



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