[Blends-commit] r3686 - /projects/gis/trunk/debian-gis/tasks/sar

[a_valentino-guest at users.alioth.debian.org]

Author: a_valentino-guest
Date: Sun Dec 23 08:16:05 2012
New Revision: 3686

URL: http://svn.debian.org/wsvn/blends/?sc=1&rev=3686
Log:
Added points2grid and imcorr

Modified:
    projects/gis/trunk/debian-gis/tasks/sar

Modified: projects/gis/trunk/debian-gis/tasks/sar
URL: http://svn.debian.org/wsvn/blends/projects/gis/trunk/debian-gis/tasks/sar?rev=3686&op=diff
==============================================================================
--- projects/gis/trunk/debian-gis/tasks/sar (original)
+++ projects/gis/trunk/debian-gis/tasks/sar Sun Dec 23 08:16:05 2012
@@ -337,3 +337,49 @@
  .
  The package currently works with ERA-Interim Reanalysis, NARR and
  MERRA data, but can be easily extended to support more weather models.
+
+Depends: imcorr
+Homepage: http://nsidc.org/data/velmap/imcorr.html
+License: GPL-2.0+
+Pkg-Description: Program to do cross-correlation for motion tracking
+ IMCORR takes two images and a series of input parameters and attempts
+ to match small subscenes (called 'chips') from the two images.
+ The program uses a fast fourier transform based version of a
+ normalized cross-covariance method.
+ .
+ The most common use of this type of algorithm in image processing is
+ to accurately locate tie-point pairs in two images to coregister them.
+ However, if the images are already coregistered by other means, the
+ algorithm may be used to find the displacements of moving features,
+ provided that the features show little change in their appearance, and
+ that the motion is strictly translational.
+ .
+ The correlation, peak finding, and error estimation routines in IMCORR
+ are derived from FORTRAN subroutines from the Land Analysis System
+ software (LAS) written at NASA Goddard Space Flight Center and USGS
+ Eros Data Center.
+ .
+ IMCORR consists of a C code wrapper which makes the use of the
+ routines more straightforward and automated for velocity-mapping
+ applications.
+
+Depends: points2grid
+Homepage: http://www.opentopography.org/index.php/resources/otforge/points2grid
+License: BSD
+Pkg-Description: Generates Digital Elevation Models using a local gridding method
+ Points2Grid generates Digital Elevation Models (DEM) using a local gridding
+ method. The local gridding algorithm computes grid cell elevation using a
+ circular neighbourhood defined around each grid cell based on a radius
+ provided by the user. This neighbourhood is referred to as a bin, while the
+ grid cell is referred to as a DEM node.
+ .
+ Up to four values — minimum, maximum, mean, or inverse distance weighted
+ (IDW) mean — are computed for points that fall within the bin.
+ These values are then assigned to the corresponding DEM node and used to
+ represent the elevation variation over the neighbourhood represented by
+ the bin. If no points are found within a given bin, the DEM node receives
+ a value of null.
+ .
+ The Points2Grid service also provides a null filing option, which applies
+ an inverse distance weighted focal mean via a square moving window of 3, 5,
+ or 7 pixels to fill cells in the DEM that have null values.