Minimum Circle

This function block calculates the smallest enclosing circle around a specified shape (contour) in an image. It helps in identifying the minimum bounding circle for an object within an image.

📥 Inputs

Image Any The input image that contains the object or shape to be analyzed.

Contour The shape (contour) for which the minimum enclosing circle is to be calculated.

📤 Outputs

Image The output image showing the minimum enclosing circle drawn around the detected contour.

Center The coordinates of the center of the enclosing circle.

Radius The radius of the enclosing circle.

🕹️ Controls

No specific controls are needed for this function block; parameters are taken from the provided inputs.

🎨 Features

Minimum Enclosing Circle Calculation Efficiently computes the smallest circle that can encompass the given contour.

Visual Representation Outputs an image that visually represents the circle enclosing the specified shape, providing clear graphical feedback.

📝 Usage Instructions

1. Input Image: Connect an image to the Image Any input containing the object of interest.

2. Input Contour: Specify the contour of the object using the Contour input.

3. Evaluate: Run the block to compute the minimum enclosing circle.

📊 Evaluation

Executing this function block calculates and returns the center and radius of the minimum circle that surrounds the provided contour, along with a visual representation in the output image.

💡 Tips and Tricks

Preprocessing the Image

Consider preprocessing the image with functions such as Image Threshold or Blur to ensure that the contours are easily distinguishable from the background.

Validating Contours

Before connecting the contour input, ensure that the contour has been generated correctly. Use the Find Contour block to confirm that the shape can be accurately detected.

Storing Results

You can keep the resulting center and radius for future calculation in other blocks by connecting to Data Memory or Data Write Local.

🛠️ Troubleshooting

No Circle Drawn

If the output image does not display a circle, ensure that the contour input is valid and correctly defined. If the contour is empty or improperly formatted, the function block will not generate a circle.

Unexpected Circle Size

If the radius or center output seems unexpected, double-check the contour input to make sure it accurately represents the desired object or shape.