Horizontal Trapezoid

The Horizontal Trapezoid test gives the ratio between the size of the left border of the image and the size of the right border of the image.



Horizontal Trapezoid = Left border size / Right border size

In detail:

For each sample EBij of the binocular eyebox, the Horizontal Trapezoid gives the ratio, left border size / right border size.

Left border size: For each sample EBij of the binocular eyebox, the left 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 bottom left sample of the virtual image seen from the sample EBij of the binocular eyebox and projected on the target image.

Right border size: For each sample EBij of the binocular eyebox, the right border size is the distance, in millimeter, from the top right 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 Horizontal 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.