WiseImage – User’s Guide
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Mean error
indicates the average error of the method chosen. Also, pay
attention to the
Xerr
and
Yerr
values to estimate the error of the chosen
method for every point.
Example of an Image Calibration
This example shows the calibration of a color image from the UTRECHT.TIF file of
the SAMPLES subfolder of the program root folder.
Image loading
Choose
Open
from the
rFile
menu.
In the dialog box go to the SAMPLES folder and double-click the
UTRECHT.TIF file name.
- or -
Select the UTRECHT.TIF file and press the
Open
button in the dialog box.
Note that this image sample has raster grid with a X-axis of 2 cells and an
Y-axis of 2 cells. The size of cells in this grid is known to be 32x32 mm, and in
the original scanned image the grid cells are distorted. We assume that the
whole image distortion corresponds to the grid distortion.
Use calibration procedure to eliminate distortion.
Open the Calibration dialog box
From the
rImage
menu, choose
Calibration
or click the
button on the
WiseImage
toolbar.
Creating a set of calibration pairs using calibration grid
1. Press the
button in the
Calibration
dialog box. The
Calibration Grid
dialog
box appears.
2. Zoom to the image lower-left corner.
3. Enter the exact coordinates of the lower-left grid node to
Origin
the UCS is
defined or press the
Measure
button
and click a point at the raster lower-
left grid node, as shown in the figure below.
