Re: [SIP-devel] [I'm considering another backend library for SIP]

[Ricardo F. <rf...@gm...>]

Hi, Zhang,

I just came back from a 10day vacation, in a town at Long Island, NY,
it was really nice.

> The calling to mogrify() from Scilab will cause Scilab to crash. I
> checked out mogrify_int.c, but found nothing unusual. So I suspect that
> this is a bug for Window ImageMagick, but I don't have time to prove it.

>=20
> A workaound currently is to rewrite mogrify() in Scilab script.=20
>
What do you mean?


About ImageMagick, here is why I adopted it:

- it supports more formats than any other library; its codecs are very
well debugged.
- works neatly on Linux and windows
- It may be big, 25Meg, but this is nothing nowadays. Besides, image
processing and the manipulation of image formats is a complex issue
and we cannot run from it. The libraries are all huge, because the
subject of image processing is huge.
- code reuse
- ImageMagick has an active user and developer base; they usually fix
a bug right after you post a bug report.

> But I come up with an idea that
> ImageMagick maybe not the best backend library for SIP. ImageMagick is
> huge in size, 25mega bytes, which makes SIP cumbersome when installed on
> Windows. What's more, I think what SIP really nead is a lightweight
> image I/O library which can handle with the variety of image formats.
> The image manipulation should be mainly implemented by SIP instead of
> strong dependent on ImageMagick. Thus we can change SIP's functions as
> we need, and the basic I/O image library can be packaged with SIP which
> makes SIP's distribution easier. However, I know switching means much
> coding and testing.
>=20
> I've found such a library, Free Image Library, free, open source, simple
> to use and deliver. I plan to test its ability as SIP's backend. I want
> to hear your comments and opinions on the issue.
>=20
> I hope SIP will become the official image processing toolbox for Scilab
> in the future. I'll keep working for it.
>=20
> Zhang Cheng
>=20
>=20
>=20
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>=20


--=20
Ricardo Fabbri

PhD Student in Computer Engineering / Computer Vision
LEMS - Laboratory for Engineering Man-Machine Systems
Brown University, USA