10. Create irregular grid 

A mouse function is used in “Evaluation window” to create an irregular evaluation grid. This function is very useful for distorted image calibration. 

 

To activate the mouse function, select menu as below:

 

 

Move the mouse arrow to the top-left corner and click left mouse button:

 

 

Select top-left radio button in dialogue box “Irregular grid” as below:

 

 

 

Move the mouse arrow to the lower-left corner and click left mouse button:

 

 

Select lower-left radio button in dialogue box “Irregular grid” as below:

 

 

Move the mouse arrow to the top-right corner and click left mouse button:

 

 

Select top-right radio button in dialogue box “Irregular grid” as below:

 

 

Move the mouse arrow to the lower-right corner and click left mouse button:

 

 

Select lower-right radio button in dialogue box “Irregular grid” as below:

 

 

Point the mouse arrow at the image and click left mouse button:

 

 

Input vertical line number (e.g. 17) and horizontal line number (e.g. 8) and press “create” button in dialogue box “Irregular grid” as below:

 

 

The irregular grid is completed as below:

 

 

Edpiv pE 2013 grid & points