Manual

Table Of Contents

DobotVisionStudio User Guide

- Major and minor axis: the length and width of the smallest area of

circumscribed rectangle, as shown below.

- Circularity and rectangularity: the similarity to a circle or rectangle.

- Barycenter offset: absolute pixel offset between Blob barycenter and center

of circumscribed rectangle of Blob minimum area.

- Axis ratio: short axis and long axis of box.

- Sort feature: it has several characteristics, such as area, perimeter, circularity,

rectangularity, connected domain center x, connected domain center y, box

angle, box width, box height, rectangular upper left vertex x, rectangular

upper left vertex y, second-order center distance, principal axis angle, axis

ratio, etc.

- Sort mode: ascending, descending and non sorting are used in combination

with the sorting feature.

• Connectivity: In image processing, the object we are interested in is usually a combination

of interconnected pixels. Therefore, in order to obtain an area, we must calculate all the connected

areas that are contained in the area after division. On a rectangular pixel grid, there are two

definitions of connectivity. The first one is that the two pixels have a common edge, that is, one

pixel is above, below, to the left or to the right of the other pixel, which is called 4-connectivity. The

second definition is the extension of the first definition. The adjacent pixels on the diagonal line are

also included, which is called 8-connectivity. The relation between these two kinds of connectivity

is shown below.

• Min. Overlap Rate:

- This parameter is used to filter Blob and filter out some Blob intersecting

ROI.