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WiseImage – User’s Guide
68
1
2
The figure above shows the
real
(1) and the
measured
(2) points positions.
The real point of the calibration pair sets the known position of the raster grid
node, and the measured point shows the position of the raster grid node on
the original (distorted) image.
4.
Go to the next calibration pair by pressing the
button in
Calibration
dialog
box.
WiseImage pans the image so that the measured point of the next calibration
pair is shown in the screen centre.
To go to the previous calibration pair, press the
button in the
Calibration
dialog box.
5.
Repeat steps 3 and 4 for all calibration pairs to specify the measured point’s
position.
Transformation method selection
As follows from the table on the page 64, the
Grid adaptive bilinear
method is
the most appropriate method to correct grid distortions.
From the
Calibration Method
list, select
Grid adaptive bilinear
.
- or -
Select
Choose automatically
from the same list.
To estimate the calibration transformation precision
Click the
button in the
Calibration
dialog box.
The program will find the
calculated
points’ coordinates –the points for the
measured points of all calibration pairs to be moved to, and their position will
be shown with yellow cross marks on the image. Also, the program calculates
the distances between the
calculated
points and the real points of the
calibration pairs in order to estimate the mean, maximal and minimal