The Mosaicoperation is used
to create
a
mosaic from a set of rasters. Image mosaic refer to that multi
images,
which are shot in
the same or different shooting condition and have overlapped
regions, are stitched and combined to a image to enlarge the
field of vision that a image can cover.
It is
accessible through:
Raster
Processing
> Mosaic...(list
of all
raster layers will be available)
This
wizard consists of the
following steps:
Wizard Page 1 - Selection
of the layers to mosaic (Layer
Search)
On the List
of Layers select the raster layers to apply the
mosaic.
Optionally use Filter By
Name
field
giving part of the layer name to help find the layer in
the list.
Press Next
to go to next step or Cancel to close the
dialog.
Wizard Page 2 - Mosaic parameters
Select the Type of
mosaic to
be used and set their specific parameters.
Geo Mosaic: Create a mosaic
from a set of geo-referenced rasters.
Tie Points Mosaic: Create a
mosaic from a set of rasters using tie-points over each
adjacent rasters pair.
Layer
A
Layer
B
Geometric
transformation
Tie
Points
Link Type
Use tool
to show the interface for the acquisition of tie
points. This interface
is the same used in the register
operation.
Sequence
Mosaic: Create mosaics from a sequence of overlapped
rasters using an automatic tie-points detection method.
Geometric Transformation
Reference Band:
The band used to
locate tie-points.
Minimum Required Tie
Points: The
minimum required tie-points covered area percent of
each raster area -
valid range [0,100] (default : 0).
Tie Point Locator
Parameters: This
interface
is the same used in the register
operation.
The common
parameters
are:
Interpolator: The
raster
interpolator method.
Blender: The pixel
blending method.
No Data:
Value: The pixel
value used where
no raster data is available (default : 0).
ForceInput Value:
If checked, no
data value will be used as the no-data value for input
rasters.
Options
Auto Equalize:
Auto equalization
will be performed using the overlapped image areas.
Use Raster Cache: If
checked, more RAM memory will be used to
optimize the process.
GeoMosaic Specific Parameters:
Target Means: a
set of target mean values used when the target
equalization type is selected.
Target Standard
Deviation: a set of target standard
deviation values used when the target equalization
type is selected.
Equalization type:
type of equalization performed if the
Auto-Equalize option is checked(
CenterEqType:Mosaic will be equalized following
the center. TargetEqtype:Mosaic will be
equalized following the supplied target means
and standard deviation values.
LocalEqType:Mosaic will be equalized following a
local strategy. ).
Press Next to
apply the
contrast or Back to go to the previous wizard page.
Wizard Page 3 - Output
information
Raster Info
- First press and inform the folder where the resulting
file will be saved.
Name - inform
the raster name.
Extra
Parameters - if there are some, see the details on
how to inform
then here.
Press Finish
to save the resulting contrasted raster or Back
to go to the previous wizard page.
Hint: The mosaic image will be added as a new layer at the
TerraView project.