Autodesk 00126-050008-1620A - Autocad 2006 Essentials User Manual page 66

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4. Specify X Size and Y Size of the grid cell.
Enter 32 to X Size and Y Size.
5. Specify numbers of grid cells along the X-axis and Y-axis entering 2 to X Cell
and Y Cell, respectively.
6. Choose OK to create a calibration grid and return to the Calibrate dialog box.
A grid of calibration pairs is displayed.
The real and measured points of each calibration pair have the same
coordinates. They represent the known position of raster grid nodes.
Define the measured points
1. Select the first calibration pair Grid (01,01) from the list in the Calibration
dialog box. WiseImage highlights the selected point with grips.
2. Zoom to the selected pair by clicking the
Calibration window. WiseImage pans the image so that the pair is shown in
the centre of the screen. Use the standard
point more exactly.
3. Change the current measured point location.
Place the mouse cursor over the grip and click. Move the cursor and click
again to specify its new location.
5 Calibrating Raster Images
button on the toolbar of the
button to view the required
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