Class CudaHoughCirclesDetector

Base class for circles detector algorithm.

public class CudaHoughCirclesDetector : SharedPtrObject, IDisposable

Inheritance: object

DisposableObject

UnmanagedObject

SharedPtrObject

CudaHoughCirclesDetector

Inherited Members: SharedPtrObject._sharedPtr

SharedPtrObject.SharedPtr

UnmanagedObject._ptr

UnmanagedObject.Ptr

DisposableObject.Dispose()

DisposableObject.ReleaseManagedResources()

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

Create hough circles detector

public CudaHoughCirclesDetector(float dp, float minDist, int cannyThreshold, int votesThreshold, int minRadius, int maxRadius, int maxCircles = 4096)

dp float: Inverse ratio of the accumulator resolution to the image resolution. For example, if dp=1 , the accumulator has the same resolution as the input image. If dp=2 , the accumulator has half as big width and height.
minDist float: Minimum distance between the centers of the detected circles. If the parameter is too small, multiple neighbor circles may be falsely detected in addition to a true one. If it is too large, some circles may be missed.
cannyThreshold int: The higher threshold of the two passed to Canny edge detector (the lower one is twice smaller).
votesThreshold int: The accumulator threshold for the circle centers at the detection stage. The smaller it is, the more false circles may be detected.
minRadius int: Minimum circle radius.
maxRadius int: Maximum circle radius.
maxCircles int: Maximum number of output circles.

Finds circles in a grayscale image using the Hough transform.

public CircleF[] Detect(IInputArray image)

Finds circles in a grayscale image using the Hough transform.

public void Detect(IInputArray image, IOutputArray circles, Stream stream = null)

image IInputArray: 8-bit, single-channel grayscale input image.
circles IOutputArray: Output vector of found circles. Each vector is encoded as a 3-element floating-point vector.
stream Stream: Use a Stream to call the function asynchronously (non-blocking) or null to call the function synchronously (blocking).

Release the unmanaged memory associated with this circle detector.

protected override void DisposeObject()