Measure

Calculate Angle

This node allows the measurement of an angle between two vectors. The measurement is taken counterclockwise from the reference vector.

The result or its individual components can be broken down using the Break Angular Measurement node and thus used for further processing.

Flow

Parameter set

Attribute	Type	Description
Reference Vector	Vector 2D	The reference vector from which the angle is measured.
Vector	Vector 2D	The second vector for angle measurement, relative to the reference vector.
Return	Angular Measurement	The calculated intersection point, the angular distance, and the starting angle of the arc.

Measure Angle (Line)

This node allows the measurement of an angle between two lines. There is a reference line from which the measurement is taken counterclockwise.

The result or its individual components can be broken down using the Break Angular Measurement node and thus used for further processing.

Flow

Parameter set

Attribute	Type	Description
Reference Line	Line 2D	The reference line from which the angle is measured.
Line	Line 2D	The second line is for measuring angles, relative to the reference line.
Return	Angular Measurement	Calculated intersection point, angular distance, and arc start angle.

Measure Angle (Rectangle)

Measures the angle between a straight line and a side of a non-square rectangle counterclockwise.

The result or its individual components can be broken down using the Break Angular Measurement node and thus used for further processing.

Flow

Parameter set

Attribute	Type	Description
Rectangle	Rectangle	Rectangle for measuring angle width.
Line	Line 2D	Line defined as `ax + by + c = 0`.
Reference	ReferenceType	Indicates whether the angle should be measured using the shorter or the longer side of the rectangle. Possible values: Line RectangleSide
Side Reference	RectangleSideReference	Indicates whether the angle should be measured using the shorter or the longer side of the rectangle. Possible values: Width Height
Return	Angular Measurement	Calculated intersection point, angular distance, and arc start angle.

Measure Angle (Segment)

This node allows the measurement of an angle between two lines. There is a reference line from which the measurement is taken counterclockwise.

The result or its individual components can be broken down using the Break Angular Measurement node and thus used for further processing.

Flow

Parameter set

Attribute	Type	Description
Reference Segment	Segment 2D	The reference segment from which the angle is measured.
Segment	Segment 2D	The second segment, used to measure the angle relative to the reference segment.
Return	Angular Measurement	Calculated intersection point, angular distance, and arc start angle.

Measure Distance (Line)

This node allows you to measure the distance between a line and a point.

Flow

Parameter set

Attribute	Type	Description
Point	Point 2D	The reference point from which the distance is measured.
Line	Line 2D	The straight line defined by the equation `ax + by + c = 0`.
Return	Single	Measured distance in pixels.

Measure Distance (Segment)

This node allows you to measure the distance between a line segment and a point.

Flow

Parameter set

Attribute	Type	Description
Point	Point 2D	The reference point from which the distance is measured.
Segment	Segment 2D	The input segment used for distance calculations.
Mode	DistanceMode	The method of distance measurement. You can choose between three modes: "To Shortest" calculates the shortest distance between the point and the path. "To Start" calculates the distance between the point and the starting point of the path. "To End" calculates the distance between the point and the endpoint of the path.
Return	Single	Measured distance in pixels.

Measure Line To Line

This node allows you to measure the distance between two lines.

Flow

Parameter set

Attribute	Type	Description
Reference Line	Line 2D	The reference line from which the distance is measured.
Line	Line 2D	The straight line defined by the equation `ax + by + c = 0`.
Return	Single	Calculated distance in pixels.

Measure Segment To Segment

This node allows the measurement of the distance between two segments. It calculates the shortest, average, and longest distances between the segments.

Flow

Parameter set

Attribute	Type	Description
Reference Segment	Segment 2D	The reference segment from which the distance is measured.
Segment	Segment 2D	The input segment to which the distance is measured.
Shortest Distance	Single	Shortest distance between segment and reference segment.
Average Distance	Single	Average distance between segment and reference segment.
Longest Distance	Single	Longest distance between segment and reference segment.

Find Homography

Calculates the homography matrix H, which maps image coordinates to world coordinates, optionally using a robust estimation method.

Flow

Parameter set

Parameter	Type	Description
Image Points	Point 2D<Array>	The set of image points (e.g., pixel coordinates) used as source positions.
World Points	Point 2D<Array>	The corresponding world points that are used as target positions.
Method	HomographyMethods	The robust estimation method to be used in calculating homography.
H	Matrix2D	The 3x3 homography matrix H, which maps image points to world points.
Inlier	Boolean	A mask that indicates for each pair of points whether it has been accepted as an inlier.
Reprojection Error	Boolean	True if all inlier points satisfy the reprojection error constraints; otherwise false.

Perspective Transform

This node enables the conversion of pixel values into the metric system based on the matrix H and the determined pixels.

Flow

Parameter set

Parameter	Type	Description
Homography Matrix	Matrix 2D	The homography matrix, which can be calculated using the "Find Homography" node.
Pixel Points	Point 2D<Array>	Points at the source level that are to be transformed to the target level.
Return	Point 2D<Array>	Returns the converted points based on matrix H and the determined pixels.