[postgis-tickets] [PostGIS] #3483: Problem with ST_Union

[PostGIS]

#3483: Problem with ST_Union
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  Reporter:  krzysiek  |      Owner:  Bborie Park
      Type:  defect    |     Status:  new
  Priority:  blocker   |  Milestone:  PostGIS 2.5.0
 Component:  raster    |    Version:  2.1.x
Resolution:            |   Keywords:  ST_Union, raster, alignment
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Comment (by krzysiek):

 The problem was the accuracy of the georeference of the images (as far as
 I remember). The imaging system was used to visualise a surface of the
 road. It was build of two cameras. During the callibration of the system
 we got numbers with 14 significand digits. After fifth or sixth digit
 there were zeros only until 12 or latter. Since we were following the road
 the sysyem tend to cumulate error and it got bigger than one pixel after a
 while and this was detected as a problem described in this ticket.
 The occurence of the probem seemd to be random and I've noticed the source
 after a few sleepless nights.
 Looks like you can close the ticket.

 Thank you and regards
 Krzysiek

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3483#comment:12>
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