[Octave-bug-tracker] [bug #38179] cp2tform: 'projective' transform very slow

[Pantxo Diribarne]

URL:
  <http://savannah.gnu.org/bugs/?38179>

                 Summary: cp2tform: 'projective' transform very slow
                 Project: GNU Octave
            Submitted by: pantxo
            Submitted on: dim. 27 janv. 2013 22:46:56 GMT
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Performance
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

Due to the use of svd() decomposition, projective transform is slow (N² ->
can't accept very larger datasets). 
Attached is a patch that avoids the use of svd and makes the function run much
faster.



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File Attachments:


-------------------------------------------------------
Date: dim. 27 janv. 2013 22:46:56 GMT  Name: cp2tf_remsvd.patch  Size: 794 o  
By: pantxo

<http://savannah.gnu.org/bugs/download.php?file_id=27333>

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