Reading an Image
Dietmar Berger
I'm looking for a function that reads an image (.jpg or .bmp) into a
matrice (similar to Matlab function Imread) . I work with scilab 5.1.1 /
Win (Vista or XP).
My aim is: I want to read a scanned diagram (curve) and determine the
corresponding numerical values of the curve.
I already read about the SIP toolbox (Windows version) but most comments
dealed with older versions of scilab or reported of failures.
As I'm new to scilab I would appreciated if anyone would advise me or
report about his experiences.
Thanks in advance for any helpful answers.
Regards
Dietmar
Guillaume Dutilleux
Hello,
http://siptoolbox.sourceforge.net/
http://sivp.sourceforge.net/
Best regards,
G. Dutilleux
Sam
> Hello NG,
>
> I'm looking for a function that reads an image (.jpg or .bmp) into a
> matrice (similar to Matlab function Imread) . I work with scilab 5.1.1 /
> Win (Vista or XP).
>
> My aim is: I want to read a scanned diagram (curve) and determine the
> corresponding numerical values of the curve.
>
> I already read about the SIP toolbox (Windows version) but most comments
> dealed with older versions of scilab or reported of failures.
That's right. There are no longer available online binaries of SIP
for
Scilab > 4.1.2 on WinXP, and personnal tentatives of rebuilding it
with a C compiler have failed.
I have succeeded in building SIVP (builder.sce. C compiler needed)
for Scilab 5.1.1 on winXP. Then, it works. But i have failed to do so
for
Scilab master > 5.1.1 (while many big improvements of Scilab
have been developped since last April's 5.1.1 release, for the
pending 5.2 release). This is clearly a big drawback: No longer
available image processing tool for Scilab >=5.2 on winXP.
Is there anyone else on the newsgroup having succeeded with SIVP
on winXP / Scilab > 5.1.1 ? Other comments are welcome.
Regards
Samuel
Francois Vogel
> That's right. There are no longer available online binaries of SIP
> for Scilab > 4.1.2 on WinXP
The SIP website advertises that SIP 0.4.0 is supposed to work with
Scilab 5.1. See right column at:
http://siptoolbox.sourceforge.net/
The corresponding binary file for Windows can be found at:
https://sourceforge.net/projects/siptoolbox/files/
(see file sip-0.4.0-bin-win32-sci4.0-beta.exe under SIP 0.4.0-candidate 1)
I did not try this build but I would be interested by your feedback.
Indeed, SIP having been stalled for several years I had turned to
SIVP. Now the situation seems to be the opposite: SIP has new binaries
but SIVP authors seem to have fallen off the face of the earth
(checked in their forum at SourceForge, and in their bug tracking
system, latest news is > 1 year old, and so on).
Lack of durability (i.e. long term support) of such software is a
pain, but you cannot expect it when using a toolbox developed by
students that sooner or later are no longer students. If SIP is now
leading again I'll have to return back to SIP and leave SIVP.
But I'll first see which one is working under Scicoslab before making
my decision. Anyone has experience in using SIP or SIVP under
Scicoslab perhaps?
> I have succeeded in building SIVP (builder.sce. C compiler needed)
> for Scilab 5.1.1 on winXP. Then, it works. But i have failed to do so
> for Scilab master > 5.1.1
What was the problem, and how did you try to build it (which compiler,
for instance)? (this is just for my education, I'll not dig into this
problem).
Francois
Sam
> > for Scilab 5.1.1 on winXP. Then, it works. But i have failed to do so
> > for Scilab master > 5.1.1
>
> What was the problem, and how did you try to build it (which compiler,
> for instance)? (this is just for my education, I'll not dig into this
> problem).
The compiler: Microsoft Visual Studio 9.0
Hereafter is the output from exec builder.sce, up to the error:
Cheers
Samuel
-------
-->exec builder.sce
-->////////////////////////////////////////////////////////////
-->// SIVP - Scilab Image and Video Processing toolbox
-->// Copyright (C) 2008 Shiqi Yu
-->//
-->// This program is free software; you can redistribute it and/or
modify
-->// it under the terms of the GNU General Public License as
published by
-->// the Free Software Foundation; either version 2 of the License,
or
-->// (at your option) any later version.
-->//
-->// This program is distributed in the hope that it will be useful,
-->// but WITHOUT ANY WARRANTY; without even the implied warranty of
-->// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-->// GNU General Public License for more details.
-->//
-->// You should have received a copy of the GNU General Public
License
-->// along with this program; if not, write to the Free Software
-->// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
-->////////////////////////////////////////////////////////////
-->lines(0);
-->gateway_dir = get_absolute_file_path('builder.sce');
-->previous_dir = pwd();
-->cd(gateway_dir);
-->ilib_name = 'libsivp';
-->//get all *.c file in this directory
-->srcfiles = listfiles('*.c');
-->//remove libsivp.c
-->files=[];
-->for myindex=1:size(srcfiles,1)
--> if( srcfiles(myindex) <> 'libsivp.c' ) then
--> files = [files, srcfiles(myindex)];
--> end
-->end
-->files = strsubst(files, '.c', '.o');
-->scilab_version=getversion();
-->if ~(str2code( part(scilab_version, 8)) <= 4) & (MSDOS==%F) then //
version >= 5.x.x
--> files = [files, 'common.h', 'config.h'];
-->end
-->// name known in scilab , C function called
-->table=[ 'sivptest', 'int_test'; 'sivp_init','int_sivp_init';
'imread', 'int_imread'; 'int_imwrite', 'int_imwrite'; 'imfinfo',
'int_imfinfo'; 'aviinfo', 'int_aviinfo'; 'aviopen',
'int_aviopen'; 'camopen', 'int_camopen'; 'avifile',
'int_avifile'; 'aviclose','int_aviclose'; 'avicloseall','int_avicloseall'; 'avilistopened',
'int_avilistopened'; 'avireadframe', 'int_avireadframe'; 'addframe',
'int_addframe'; 'int_imresize', 'int_imresize'; 'int_imabsdiff',
'int_imabsdiff'; 'int_imadd', 'int_imadd'; 'int_imsubtract',
'int_imsubtract'; 'int_immultiply', 'int_immultiply';
'int_imdivide', 'int_imdivide'; 'imfilter', 'int_imfilter';
'filter2', 'int_filter2'; 'mat2utfimg',
'int_mat2utfimg'; 'int_canny', 'int_canny'; 'int_sobel',
'int_sobel'; 'int_cvtcolor', 'int_cvtcolor'; 'ind2rgb',
'int_ind2rgb'; 'detectobjects', 'int_detectobjects'; 'camshift',
'int_camshift'; 'meanshift', 'int_meanshift'; 'detectforeground',
'int_detectforeground'; 'impyramid', 'int_impyramid'; ];
-->if (MSDOS) then
--> libname = ilib_build(ilib_name,table,files,[],'Makelib',' '"C:\
\PROGRA~1\\OpenCV\\lib\\cxcore.lib'" '"C:\\PROGRA~1\\OpenCV\\lib\
\cv.lib'" '"C:\\PROGRA~1\\OpenCV\\lib\\cvaux.lib'" '"C:\\PROGRA~1\
\OpenCV\\lib\\highgui.lib'" ', '-I'"C:\\PROGRA~1\\OpenCV\\cxcore\
\include'" -I'"C:\\PROGRA~1\\OpenCV\\cv\\include'" -I'"C:\\PROGRA~1\
\OpenCV\\cvaux\\include'" -I'"C:\\PROGRA~1\\OpenCV\\otherlibs\
\highgui'"');
Generate a gateway file
Generate a loader file
Generate a Makefile: Makelib
Running the makefile
Compilation de aviinfo
Compilation de avicloseall
Compilation de ind2rgb
Compilation de immultiply
Compilation de imwrite
Compilation de detectobjects
Compilation de imfilter
Compilation de mat2utfimg
Compilation de imread
Compilation de aviclose
Compilation de imfinfo
Compilation de common
Compilation de avilistopened
Compilation de sivp_init
Compilation de meanshift
Compilation de test
Compilation de canny
Compilation de sobel
Compilation de imdivide
Compilation de imresize
Compilation de filter2
Compilation de cvtcolor
Compilation de imsubtract
Compilation de aviopen
Compilation de camopen
Compilation de avifile
Compilation de avireadframe
Compilation de imadd
Compilation de detectforeground
Compilation de camshift
Compilation de addframe
Compilation de impyramid
Compilation de imabsdiff
Building shared library (be patient)
NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual
Studio 9.0\VC\bin\cl.EXE"'á: code retour '0x2'
Stop.
!--error 10000
unix_s: error during "nmake /Y /nologo /f Makelib.mak all" execution
at line 34 of function unix_s called by :
at line 61 of function ilib_compile called by :
at line 83 of function ilib_build called by :
I'"C:\\PROGRA~1\\OpenCV\\otherlibs\\highgui'"')
at line 51 of exec file called by :
exec builder.sce
Francois Vogel
> Hereafter is the output from exec builder.sce, up to the error:
This does not look like the output of SIVP-0.5.0. In the latter the
builder.sce is just a dummy file so that the entry shows up in the
toolboxes menu. What version of SIVP did you try? Why not the latest?
On the other hand I have checked that SIVP-0.5.0 runs with
Scicoslab-4.3, at least on Windows. There is a little issue because
getversion() does not return the same kind of things in Scilab-5 and
in Scicoslab. Just a slight change to do to make it run:
-->cd SCI/contrib/SIVP-0.5.0
ans =
C:\PROGRA~1\SCICOS~2\contrib\SIVP-0.5.0
-->scipad loader.sce
Then, comment lines 36 and 37 that read:
scilab_version=getversion();
scilab_version=str2code( part(scilab_version, 8));
and add:
scilab_version=4
Save and exit.
Then in Scicoslab, issue:
-->exec loader.sce
That's all. SIVP-0.5.0 seems to be ready to work with Scicoslab-4.3.
First try:
-->cd demos;
ans =
C:\PROGRA~1\SCICOS~2\contrib\SIVP-0.5.0\demos
-->exec canny.sce;
This works for me.
The problem is that SIVP-0.5.0 is very unstable, and most of the demos
crash:
face.sce crash on detectfaces()
noise.sce crash on imshow()
and so on.
I have no time to investigate now on this, unfortunately.
Francois