[scilab-Users] Re: GraphicsMagic1.3.15-windows-source in Scilab- 5.3.3

[Ricardo Fabbri]

Hi,

16bit tiff is suported.

You need your imagemagick to have 16bit enabled (which is usually default).

SIP code "normally normalizes" the ImageMagick image to a double
representation between 0-1.
The conversion is done in e.g. magick_truecolor_image_to_double_hypermat in
the file
src/sip_common.c from SIP, and uses a constant called MaxRGB for
normalization.

Therefore it is written to support 16bit.

A test confirms that:

$ identify onca.tiff

onca.tiff TIFF 238x182 238x182+0+0 16-bit Grayscale DirectClass 50KB 0.000u
0:00.00

--> a=imread('onca.tiff');
--> imshow(a);

best,
Ricardo Fabbri
--
Linux registered user #175401
www.lems.brown.edu/~rfabbri <http://www.lems.brown.edu/%7Erfabbri>
pt.wikipedia.org/wiki/IPRJ
labmacambira.sf.net


On Tue, May 22, 2012 at 5:16 PM, Antoine Monmayrant <
antoine.monmayrant at laas.fr> wrote:

> Le 22/05/12 21:19, Ricardo Fabbri a écrit :
>
>  SIP uses ImageMagick which is basically a variant of GraphicsMagick
>> (actually the other way around). ImageMagick is actually more advanced
>> than
>> GraphicsMagick, but a bit harder to keep track of backward compatibility
>> (but that's a developer's little issue).
>>
>> You should direct your efforts to try to install/link SIP to your scilab,
>> then you'll have a scilab API for libtiff (and hundreds of other image
>> format libs as well).
>>
> Is there support for 16bit tiff?
> If yes, I'll dump all my buggy code and switch back to sip...
>
>>
>> If you are not using Linux, you can still try to see what it takes to get
>> SIP up and running in your Operating System, since it has all the
>> machinery
>> required to link to an external lib like libtiff.
>>
>> best,
>> Ricardo Fabbri
>> --
>> Linux registered user #175401
>> www.lems.brown.edu/~rfabbri <http://www.lems.brown.edu/%7Erfabbri><ht**
>> tp://www.lems.brown.edu/%**7Erfabbri<http://www.lems.brown.edu/%7Erfabbri>
>> >
>>
>> pt.wikipedia.org/wiki/IPRJ
>> labmacambira.sf.net
>>
>>
>> On Tue, May 22, 2012 at 3:58 PM, Antoine Monmayrant<
>> antoine.monmayrant at laas.fr>  wrote:
>>
>>  Le 22/05/12 20:27, benes a écrit :
>>>
>>>  Hi. I´d like to call libtiff from Scilab but I don´t know how. Where do
>>> I
>>>
>>>> put
>>>> litiff and How do I call it?
>>>>
>>>>  well, it's a convoluted process, you need to write a function (in C)
>>> and
>>> then make a wrapper that call this function and check everything fits
>>> scilab requirements.
>>> I have to work on my horrible code to be able to post it here.
>>>
>>>
>>>  Another thing: I have libtiff-4.1 and Libtiff.NET. Which one better
>>>> suited
>>>> for Scilab?
>>>>
>>>>  I don't know. I have only used it on linux, so it was clearly not the
>>> .NET
>>> version ;-)
>>> But the way you compile and link it in scilab makes it fairly cross
>>> platform.
>>>
>>> Antoine
>>>
>>>
>>>  Thanks for your help.
>>>>
>>>> --
>>>> View this message in context: http://mailinglists.scilab.**
>>>> org/GraphicsMagic1-3-15-****windows-source-in-Scilab-5-3-****
>>>> 3-tp4006029p4007177.html<http:**//mailinglists.scilab.org/**
>>>> GraphicsMagic1-3-15-windows-**source-in-Scilab-5-3-3-**
>>>> tp4006029p4007177.html<http://mailinglists.scilab.org/GraphicsMagic1-3-15-windows-source-in-Scilab-5-3-3-tp4006029p4007177.html>
>>>> >
>>>>
>>>> Sent from the Scilab users - Mailing Lists Archives mailing list archive
>>>> at Nabble.com.
>>>>
>>>> --
>>>> To unsubscribe from this mailing-list, please send an empty mail to
>>>> users-unsubscribe at lists.**scil**ab.org <http://scilab.org><
>>>> users-unsubscribe@**lists.scilab.org<users-unsubscribe at lists.scilab.org>
>>>> >
>>>>
>>>> To check the archives of this mailing list, see
>>>> http://mailinglists.scilab.****org/<http://mailinglists.**scilab.org/<http://mailinglists.scilab.org/>
>>>> >
>>>>
>>>>
>>>>
>>>>  --
>>> To unsubscribe from this mailing-list, please send an empty mail to
>>> users-unsubscribe at lists.**scil**ab.org <http://scilab.org><
>>> users-unsubscribe@**lists.scilab.org<users-unsubscribe at lists.scilab.org>
>>> >
>>>
>>> To check the archives of this mailing list, see
>>> http://mailinglists.scilab.****org/<http://mailinglists.**scilab.org/<http://mailinglists.scilab.org/>
>>> >
>>>
>>>
>>>
>
> --
> To unsubscribe from this mailing-list, please send an empty mail to
> users-unsubscribe at lists.**scilab.org <users-unsubscribe at lists.scilab.org>
> To check the archives of this mailing list, see
> http://mailinglists.scilab.**org/ <http://mailinglists.scilab.org/>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20120523/e75f82d3/attachment.htm>