Regional characteristics

1:

Looking at the region feature after the threshold, you can see it through feature detection on the toolbar

Region features are divided into three parts:

1. Basic features: area, center, width and height, upper left and lower right coordinates, elliptical direction of long half-axis and short half-axis, number and area of holes, roughness, connection number, maximum radius, direction, etc.

2. Switching characteristics: radius of outer circle, radius of inner circle, roundness, compactness, length, rectangularity, convexity, eccentricity, bulkiness, direction and length of outer rectangle, etc.

3. Geometric moment characteristics: second-order moment, third-order moment, principal inertial axis, etc.

Region feature selection, using select_shape, is determined to be connected ():

Select_shape (Regions: Selected Regions: Features, operations, Min, Max:)

Role: Select a specific region to refer to Halcon's own routine: select_shape.hdev

Image: Regions: Row, Column, Tolerance, MinSize:)

Function: Region growing method is used to segment images to obtain regions, where MinSize is the minimum area value of a single region, and if it is less than this value, it is filtered out.

Area_center (Regions::: Area, Row, Column)

Function: Calculate area and arbitrary shape of the region center position (the center position is not necessarily on the region)

Two:

Regional joint operations:

1. union 1, union 2 summation

2. Intersection Intersection

3. Differential Differentiation

4. Complement

The following are explanations:

Union 1 (Region: RegionUnion::)

Action: Joint connected region.

Union 2 (Region1, Region2: RegionUnion:)

Role: Merge two regions into one region.

Difference (Region, Sub: RegionDifference::)

Role: Part of Sublast year's Region

Comple (Region: RegionCompletion::)

Function: Computing the complement of Region

The region transformation operation:

1. convex hull

2. outer_circle

3. inner_circle

4. retangle 1

5. retangle 2

6. inner_rectangle1

The following are explanations:

Region transformation operations are mainly used for operators:

Shape_trans (Region: RegionTrans: Type:)

Function: The shape of the transformation region is the six shapes listed above (convexity, circumscribed circle, circumscribed circle, circumscribed rectangle, etc.).

So much for region for the time being.