Autodesk 05720-017408-9641 User Guide - Page 66

5 Calibrating Raster Images Click here 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 button on the toolbar of the Calibration window. WiseImage pans the image so that the pair is shown in the centre of the screen. Use the standard button to view the required 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. 67