Re: [otb-users] Re: Image tile fusion

2016-04-18 Thread Abdelghani Souirji 

Hello,

Thank you very much for this information. I have downloaded the image 
mosaicking remote module from Remi Cresson and sent him an email to ask 
him how to use it inside Monteverdi 3.0.1.


Best regards,
Abdelghani Souirji


Le 18/04/2016 10:27, Julien Michel a écrit :

Hi Ghanisen,

The TileFusion application (and former monteverdi 1.x module) is not 
meant for general mosaicing based on image geolocation : it only 
allows to stitch back together tiles that are exactly adjacent. A good 
example of this kind of data is when a ground segment cuts images into 
parts which weight less than 2 Gb each (to accomodate for poor 
filesystems limitations).


If you want a tool for general mosaicing (which includes resampling 
images to a common spatial reference system, and compute seamlines), 
you may want to have a look at :
- The image mosaiking remote module from Remi Cresson : 
https://github.com/remicres/otb-mosaic

- gdalwarp which has mosaicing capabilities.

Regards,

Julien

Le 18/04/2016 10:14, ghanisen.g a écrit :

Hi Arthur, hi Guillaume,

Thanks for the explanations. The problem is that when you mosaic 
images there is generally an overlap hence the number of rows and 
columns of the mosaic is different (less) than the sum of the rows 
and columns of the mosaicked images. Also, the mosaicing window 
allows to enter only 1 time the number or rows and columns, therefore 
these are those of the mosaic.


The question is how determine the 'future' number of rows and columns 
of the mosaic. There are also possibilities to do this through 
formulas but the explanations given in the help provided in the 
mosaicing window are not clear.


Do you have any information on how to determine before hand the 
mosaic's number of rows and columns through these formulas or otherwise?


Kind regards.

Le lundi 18 avril 2016 09:52:44 UTC+2, Guillaume Pasero a écrit :

Hi,

Arthur is right. The number of tile columns and tile rows
corresponds to the layout of the tiles you want to fuse.
Let say you give 6 input tiles, you should use the rows & columns
parameters to specify if the tile array is 2 columns by 3 rows ,
or 3 columns by 2 rows.

Regards,
Guillaume

On 04/18/2016 09:42 AM, arthurd wrote:

Hi,

I don't use Monteverdi but I guess it's very similar to the
command otbcli_TileFusion, where Nb of tile columns/rows refer
to the way your images were delivered. For Pleiades for example,
each tile has a suffix R1C1, R1C2, etc. This means Row 1 Column
1, Row 1 Column 2. The parameters you need are the total Nb of
columns/rows.

Le vendredi 15 avril 2016 12:25:27 UTC+2, ghanisen.g a écrit :

Hello,

I have great difficulties using the *Image tile fusion
*module in OTB-Monteverdi because very little information on
fusion parameters is given in the documentation tab of the
Image fusion window and in the user manual of Monteverdi.

My main problem is about the *Number of tile columns* and
*Number of tile rows*. It is not clear what these parameters
correspond to and how to find them.

Does anybody have any detailed information about this?

Any help shall be greatly appreciated.

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Responsable technique
*Business Unit E-SPACE & Geo Information - Département Image &
Applications*

*CS Systèmes d'Information*
Parc de la Grande Plaine - 5, Rue Brindejonc des Moulinais - BP 15872
31506 Toulouse Cedex 05 - FRANCE
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Re: [otb-users] Re: Image tile fusion

2016-04-18 Thread Julien Michel 

Hi Ghanisen,

The TileFusion application (and former monteverdi 1.x module) is not 
meant for general mosaicing based on image geolocation : it only allows 
to stitch back together tiles that are exactly adjacent. A good example 
of this kind of data is when a ground segment cuts images into parts 
which weight less than 2 Gb each (to accomodate for poor filesystems 
limitations).


If you want a tool for general mosaicing (which includes resampling 
images to a common spatial reference system, and compute seamlines), you 
may want to have a look at :
- The image mosaiking remote module from Remi Cresson : 
https://github.com/remicres/otb-mosaic

- gdalwarp which has mosaicing capabilities.

Regards,

Julien

Le 18/04/2016 10:14, ghanisen.g a écrit :

Hi Arthur, hi Guillaume,

Thanks for the explanations. The problem is that when you mosaic 
images there is generally an overlap hence the number of rows and 
columns of the mosaic is different (less) than the sum of the rows and 
columns of the mosaicked images. Also, the mosaicing window allows to 
enter only 1 time the number or rows and columns, therefore these are 
those of the mosaic.


The question is how determine the 'future' number of rows and columns 
of the mosaic. There are also possibilities to do this through 
formulas but the explanations given in the help provided in the 
mosaicing window are not clear.


Do you have any information on how to determine before hand the 
mosaic's number of rows and columns through these formulas or otherwise?


Kind regards.

Le lundi 18 avril 2016 09:52:44 UTC+2, Guillaume Pasero a écrit :

Hi,

Arthur is right. The number of tile columns and tile rows
corresponds to the layout of the tiles you want to fuse.
Let say you give 6 input tiles, you should use the rows & columns
parameters to specify if the tile array is 2 columns by 3 rows ,
or 3 columns by 2 rows.

Regards,
Guillaume

On 04/18/2016 09:42 AM, arthurd wrote:

Hi,

I don't use Monteverdi but I guess it's very similar to the
command otbcli_TileFusion, where Nb of tile columns/rows refer to
the way your images were delivered. For Pleiades for example,
each tile has a suffix R1C1, R1C2, etc. This means Row 1 Column
1, Row 1 Column 2. The parameters you need are the total Nb of
columns/rows.

Le vendredi 15 avril 2016 12:25:27 UTC+2, ghanisen.g a écrit :

Hello,

I have great difficulties using the *Image tile fusion
*module in OTB-Monteverdi because very little information on
fusion parameters is given in the documentation tab of the
Image fusion window and in the user manual of Monteverdi.

My main problem is about the *Number of tile columns* and
*Number of tile rows*. It is not clear what these parameters
correspond to and how to find them.

Does anybody have any detailed information about this?

Any help shall be greatly appreciated.

-- 
-- 
Check the OTB FAQ at

http://www.orfeo-toolbox.org/FAQ.html


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-- 
 	*Guillaume PASERO*

Responsable technique
*Business Unit E-SPACE & Geo Information - Département Image &
Applications*

*CS Systèmes d'Information*
Parc de la Grande Plaine - 5, Rue Brindejonc des Moulinais - BP 15872
31506 Toulouse Cedex 05 - FRANCE
+33 561 17 64 21 - guillaum...@c-s.fr 

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18,

Re: [otb-users] Re: Image tile fusion

2016-04-18 Thread Guillaume Pasero 

  
  
Hi,

Arthur is right. The number of tile columns and tile rows
corresponds to the layout of the tiles you want to fuse. 
Let say you give 6 input tiles, you should use the rows &
columns parameters to specify if the tile array is 2 columns by 3
rows , or 3 columns by 2 rows.

Regards,
Guillaume

On 04/18/2016 09:42 AM, arthurd wrote:


  Hi,

I don't use Monteverdi but I guess it's very similar to the
command otbcli_TileFusion, where Nb of tile columns/rows refer
to the way your images were delivered. For Pleiades for example,
each tile has a suffix R1C1, R1C2, etc. This means Row 1 Column
1, Row 1 Column 2. The parameters you need are the total Nb of
columns/rows.

Le vendredi 15 avril 2016 12:25:27 UTC+2, ghanisen.g a écrit :

  Hello,

I have great difficulties using the Image tile fusion module
in OTB-Monteverdi because very little information on fusion
parameters is given in the documentation tab of the Image
fusion window and in the user manual of Monteverdi.

My main problem is about the Number of tile columns
and Number of tile rows. It is not clear what these
parameters correspond to and how to find them. 

Does anybody have any detailed information about this?

Any help shall be greatly appreciated.

  

  
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  Guillaume PASERO
Responsable technique
Business Unit E-SPACE & Geo Information -
  Département Image & Applications

CS Systèmes d'Information
Parc de la Grande Plaine - 5, Rue Brindejonc des
Moulinais - BP 15872
31506 Toulouse Cedex 05 - FRANCE
+33 561 17 64 21 - guillaume.pas...@c-s.fr
  
  

  

  




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