Detect Circle Centers

Image

Image

Centers of circles in the image input to this port will be detected.

Circle Shape Info

Shape2D/Circle[]

Information of the detected circles (including center, and radius).

Visualization Image

Image -

Image for visualization.

Circle Detector Type

Edge Sharpness Level

Parameter description: This parameter is used to set the requirement for circle edge sharpness during detection. Larger values require higher edge clarity.
Default value: 5

Circle Similarity

Parameter description: This parameter is used to set the similarity threshold between candidate targets and ideal circles.
Default value: 5

Edge Smoothness Level

Parameter description: This parameter is used to set the threshold for determining circle edge smoothness.
Default value: 9

Minimum Distance between Circles

Parameter description: This parameter is used to set the minimum circle center distance allowed between two detection results.
Default value: 500 px

Gradient Threshold

Parameter description: This parameter is used to set a high threshold for the Canny detector. The lower the value, the more edge pixels.
Default value: 50

Accumulator Threshold

Parameter description: This parameter is used to set the accumulator threshold for the circle center during detection. The lower the threshold, the more circles are detected.
Default value: 20

Dp

Parameter description: The ratio of the image resolution to the accumulator resolution. The higher the value, the larger the number of circles detected.
Default value: 2

Min Radius

Parameter description: This parameter is used to set the minimum radius of circles to be detected.
Default value: 10 px

Max Radius

Parameter description: This parameter is used to set the maximum radius of circles to be detected.
Default value: 20 px

Output Type