registration grid menu

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The Grid menu is for creating grid images. These are simple vector images where the vectors form a regular grid of a specified size. Such a grid image can be used in the registration menu as a master image to correct a slave image for optical distortions.

The procedure for creating a grid image is as follows:

  1. Specify the spacing between the grid lines by entering the distances in the Grid x-interval and Grid y-interval menu fields.
  2. Specify the grid resolution in the Grid resolution menu field. If you need a positional accuracy of 1/1000th of the grid spacing, you would enter 0.001 here.
  3. Specify the units you used in step 1) above by entering them in the Grid units menu field.
  4. Enter the number of grid boxes you want horizontally and vertically. For example, if you need five grid intervals horizontally and three vertically, you would enter 5 in the Grid x-boxes field and 3 in the Grid y-boxes field.
  5. Enter the name you want for the grid image in the Grid image name menu field.
  6. Click on CREATE GRID IMAGE.