3D Contour Intersection

Operator Function

On the contour image, extract two straight lines respectively. If the two lines intersect, output the intersection point coordinates. If the two lines are parallel, an error is reported.

Parameter Introduction

Input Parameters

Parameter	Range	Default Value	Description	Illustration
Input Image	0-8	0	The IM number for image input

Calculation Parameters

Parameter	Range	Default Value	Description	Illustration
Region			Only enabled when acquisition method is line fitting; fit line based on points within the region
Type	1D Window	1D Window	Only enabled in manual mode; set manually selected type: 1D Window
Start Point			Only enabled in manual mode; input X, Z coordinates of start point
End Point			Only enabled in manual mode; input X, Z coordinates of end point
Calculate Angle			If enabled, calculate the angle between lines

Result Display

Parameter	Range	Default Value	Description	Illustration
Line 1	true/false	false	If enabled, display Line 1 in the image
Line 2	true/false	false	If enabled, display Line 2 in the image
Intersection Point	true/false	false	If enabled, display the intersection point of two lines in the image
Angle	true/false	false	If enabled, display the angle between two lines in the image

Output Parameters

Name	Type	Range	Description
Result	bool	true/false	true for success false for failure
Warning	bool	true/false	true indicates there is a warning false indicates there is none
Message	string		Outputs success, error, or warning information; if there is no error or warning, it is empty
Time	float		Operator execution time, unit: ms
intersection_point	point1d		Output intersection point

Tip

For more detailed explanations of parameter types, please refer to Type Definitions

Exception Troubleshooting

No.	Exception Information	Corresponding Parameter	Solution
1	Failed to get feature points in crop region		Adjust start and end parameters of point acquisition region to ensure valid points exist in selected area
2	Input region type is {0}, invalid region type	Region Type	Input region type must be 1D Window
3	Error getting region for Line 1		Adjust start and end parameters of Line 1 acquisition region to ensure at least two valid points exist in selected area
4	Error getting region for Line 2		Adjust start and end parameters of Line 2 acquisition region to ensure at least two valid points exist in selected area
5	Two lines are parallel	-	-

Example Introduction

Engineering Design

1. Select the Load Point Cloud tool to load the 3D point cloud image to be processed into IM0.

2. Select the 3D Contour Extraction tool to extract contours into IM1, IM2, IM3 respectively.

3. Select the 3D Contour Intersection tool.

Tool Usage

1. Select the input image for operation; the image number must match the IM number where the image is located in the project.

2. Move the window to the position where line fitting is needed, enclosing the area where line fitting is required.

Usage Tips

1. Use the ROI controller on the image window to drag or scale the window;
2. Directly modify the start or end coordinates of the window in the calculation parameters to adjust the window position and size;

3. Check the content you want to display in the result display section

4. Click Test to check if the image window and parameters meet expectations

5. If there are no issues, click Save, then run the operator in the run list to view the results in the corresponding IM