For complex ones, firstly the polygons are simplified according to close points, then the longest diagonal is gotten, lastly, annotations are placed along long-diagonal.

The research results reflect the controllability of the twiddler is more difficult,and is affected by the vision input devices,the degree of the influence increases with decrease of the diagonal field of view,which the vision input device can afford.

Diagonal Register and Automatic Control System Based on Image Processing for the Sheet-fed Offset Press;

A simpleand easyway of using diagonal law to measure determinants;

The rotational inertia of arbitrary polygonal uniform rigid sheet around arbitrary diagonal;