Vertical Trapezoid

The Vertical Trapezoid test gives the ratio between the size of the top border of the image and the size of the bottom border of the image.



Vertical Trapezoid = Top border size / Bottom border size

In detail:

For each sample EBij of the binocular eyebox, the Vertical Trapezoid gives the ratio, top border size / bottom border size.

Top border size: For each sample EBij of the binocular eyebox, the top border size is the distance, in millimeter, from the top left sample of the virtual image seen from the sample EBij of the binocular eyebox and projected on the target image to the top right sample of the virtual image seen from the sample EBij of the binocular eyebox and projected on the target image.

Bottom border size: For each sample EBij of the binocular eyebox, the bottom border size is the distance, in millimeter, from the bottom left sample of the virtual image seen from the sample EBij of the binocular eyebox and projected on the target image to the bottom right sample of the virtual image seen from the sample EBij of the binocular eyebox and projected on the target image.

Note: In the plugin, the dynamic distortion (the virtual image seen from the sample EBij) is computed in three dimensions.

The result of the computation is displayed as a table that contains the Vertical Trapezoid computed for each sample EBij of the binocular eyebox.



In particular, you can notice that:
  • There is one table result by configuration created.
  • Each table has the size of the sampling of the binocular eyebox.
  • The test also displays a sum up, for each configuration, of the Average, the Standard deviation, the Minimum and the Maximum of the value contained in the table.