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NAME

i.ortho.corr - Corrects orthophoto taking part of the adjacent orthophotos using a camera angle map.

KEYWORDS

imagery, orthorectification

SYNOPSIS

i.ortho.corr
i.ortho.corr --help
i.ortho.corr input=name [osuffix=ortho] [csuffix=ortho] tiles=name [field=name] [exclude=name] [output=name] [--help] [--verbose] [--quiet] [--ui]

Flags:

--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

input=name [required]
Name of input raster map
osuffix=ortho
Suffix of ortophoto map, default is .ortho, use None for no suffix
csuffix=ortho
Suffix of camera angle map, default is .camera_angle, use None for no suffix
tiles=name [required]
Name of input vector tiles map create by a list of orthophoto
field=name
Name of location's field in the input vector tiles map
exclude=name
Pattern to use if you want exclude some tiles
output=name
Name of output raster map

Table of contents

DESCRIPTION

i.ortho.corr allows to correct orthophotos using the camera angle map create by i.ortho.photo.

It creates a new image by searching further images adjacent to the input image. The output contains part of near images where the camera angle value is optimal.

NOTES

It requires a tile index to be created containing all the images to be processed (e.g., GDAL's gdaltindex can create that):
gdaltindex tile.shp $GRASSDATA/$LOCATION/$MAPSET/cellhd/*imagery.ortho
The field option is used for the field's name which contains the path to the file, the default is location that it is used by gdaltindex. The exclude option serves to remove some tiles, for example when having tiles from a different flight, they can be excluded by passing a string or a regular expression.

EXAMPLES

Create tile index:
gdaltindex tile.shp $GRASSDATA/$LOCATION/$MAPSET/cellhd/*imagery.ortho

Import tile index inside the mapset

v.in.ogr dns=tile.shp out=tile_images

Start i.ortho.corr with the default parameters, the output map's name will be image.ortho_corr. You can use default parameters if you didn't change the output prefix in i.ortho.photo:

i.ortho.corr input=image.ortho tiles=tile_images

Start i.ortho.corr with different parameters

i.ortho.corr input=image.photo tiles=tile_images osuffix=.photo csuffix=.camera 

SEE ALSO

i.ortho.photo, i.photo.rectify

AUTHOR

Luca Delucchi, Fondazione E. Mach (Italy)

Last changed: $Date: 2016-02-20 14:37:38 +0100 (Sat, 20 Feb 2016) $

SOURCE CODE

Available at: i.ortho.corr source code (history)


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