[Scilab-users] ?= Install image processing toolbo

Tue Mar 21 09:09:26 CET 2017

Hi,

> I faced case #1: Ubuntu 16.04 with recent kernel.
> The thing with Atoms is that you don't go and check the website, you just install and are left wondering why this module just killed your scilab install. It's a fairly bad first experience and I think it turns away some potential users.
I've put that in the "Additional build instructions", but apparently it 
is just visible for the maintainers. I should have put it in the 
description.
> Do you think it would be possible to design your atoms module to warn users of the issue and workaround?
> This could be done in the "IPCV.start" script.
I thought of that as well, however, I would need more installation 
feedback before I could cater for most possibilities. Else, the errors 
might be more unpredictable for other platform. I will look into the 
best way in next release.

thanks for your feedback.

rgds,
Chin Luh
>
> Antoine
>
>   
> Le Mardi, Mars 21, 2017 02:34 CET, Tan Chin Luh <chinluh at tritytech.com> a écrit:
>   
>> Hi,
>>
>> Great that you've get it works.
>> The crashed was caused by 2 reasons:
>>
>> 1. If you're running latest kernel (e.g Ubuntu 16.04), the crash is
>> caused by the older libgomp.so library distributed under Scilab 6
>> binary. This problem could be resolved with the OpenCV installed as
>> along the installation the latest libgomp.so would be installed to the
>> system as well.
>>
>> 2. If you're running an older version (e.g Ubuntu 14.04) , the crash is
>> caused during the loading of the IPCV library which is compiled with
>> newer version of gcc.
>>
>> Usually in linux, a lot of codes/program will just ask the user to
>> download the source and recompile on the system itself. This will
>> eliminate the issue of crashing. Another way is packaging the libraries
>> into the software package, which could be a more complicated process for
>> the developer.
>>
>> For the problem you faced, it is definitely not the atoms portal issue.
>> Atoms portal does not handle the third parties library an atoms-module
>> required, and the dependencies of the module which could also crashed
>> with the version of libraries carried by the Scilab binary.
>>
>> So with all these problem, I tried to come out with the "less" effort
>> way for the user to make it works on linux, still causing crash for the
>> first time, but with extra 1-2 steps will solve the problem.
>>
>> Thanks.
>>
>> Regards,
>> Chin Luh
>>
>> On 20/3/2017 6:39 PM, Antoine Monmayrant wrote:
>>> Answering my own message: It seems that core dump & segfault are almost part of the install process described here: http://scilabipcv.tritytech.com/2017/03/17/installation-of-scilab-ipcv/
>>> I followed these recommendations and I can restart scilab without a segfault.
>>>
>>> I have the feeling there is something wrong with such an install process (install prerequisite, use atoms, crash, do some hand tweaking, pray).
>>> As far as I remember, image processing toolboxes have always been a pain to install.
>>> Why is this the case?
>>> Is the atoms system inadequate?
>>>
>>> Antoine
>>>    
>>> Le Lundi, Mars 20, 2017 11:21 CET, "Antoine Monmayrant" <antoine.monmayrant at laas.fr> a écrit:
>>>    
>>>> Le Samedi, Mars 18, 2017 16:03 CET, Adailton Júnior <adailtonjn68 at gmail.com> a écrit:
>>>>    
>>>>> Hello,
>>>>>
>>>>> atomsInstall("IPCV") didn't work right away, and I tried in more than
>>>>> one computer. Although, after usingatomsSystemUpdate(), it worked.
>>>>> So, thanks for the quick reply. And good work. Now, I can proceed with
>>>>> my research.
>>>> Well I was less lucky than you: this package crashes a fresh install of scilab 6.0:
>>>>
>>>> tar -xvf scilab-6.0.0.bin.linux-x86_64.tar.gz
>>>> scilab-6.0.0/bin/scilab
>>>>
>>>> --> atomsInstall('IPCV')
>>>> Examen du dépôt http://atoms.scilab.org/6.0 ... Terminé
>>>>
>>>>    ans  =
>>>>
>>>> !IPCV  1.0  allusers  SCI/contrib/IPCV/1.0  I  !
>>>>
>>>> AtomsAutoload() // segfault & core dumped
>>>>
>>>>
>>>> Antoine
>>>>
>>>>> Best regards,
>>>>>
>>>>> -- 
>>>>> Adailton Júnior
>>>>> +5569992549337
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On 18/03/2017 09:06, Tan Chin Luh wrote:
>>>>>> hi,
>>>>>>
>>>>>> you might want to try:
>>>>>> --> atomsInstall("IPCV")
>>>>>>
>>>>>> a new module which is base on SIVP with more functions, just uploaded
>>>>>> about a day ago.
>>>>>>
>>>>>> Cheers!
>>>>>>
>>>>>> rgds,
>>>>>> CL
>>>>>>
>>>>>>
>>>>>> On 18/3/2017 1:47 AM, Viktor Goryainov wrote:
>>>>>>> Hello!
>>>>>>>
>>>>>>> 17.03.2017 18:43, Adailton Júnior пишет:
>>>>>>>
>>>>>>>> --> atomsInstall("SIP")
>>>>>>> As far as I can see from atoms.scilab.org, neither SIP, nor SIVP
>>>>>>> (Scilab Image and Video Processing toolbox) are available at all for
>>>>>>> Scilab 6.0 right now. The latter has less time since last update
>>>>>>> released (0.5.3.2 in 2014), but it was still intended for Scilab 5.x.
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Viktor
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