Class CVEdgeDetectBlock

Namespace

VisioForge.Core.MediaBlocks.OpenCV

Assembly

VisioForge.Core.dll

OpenCV edge detection block for identifying boundaries and contours in video streams. This block performs edge detection using various computer vision algorithms including Canny, Sobel, Laplacian, and Scharr operators. Edge detection is fundamental for object recognition, feature extraction, image segmentation, and computer vision applications. The block provides configurable threshold parameters, gradient calculations, and noise reduction capabilities. Essential for medical imaging, industrial inspection, autonomous vehicles, and surveillance systems. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class CVEdgeDetectBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

object

MediaBlock

CVEdgeDetectBlock

Implements

IMediaBlock

IDisposable

IMediaBlockInternals

Inherited Members

MediaBlock._isBuilt

MediaBlock._pipeline

MediaBlock._pipelineCtx

MediaBlock.GetPipelineContext()

MediaBlock.SetPipelineContext(BlockPipelineContext)

MediaBlock.SetPipeline(MediaBlocksPipeline)

MediaBlock.Context

MediaBlock.Name

MediaBlock.IsBuilt

MediaBlock.Owner

MediaBlock.Type

MediaBlock.ID

MediaBlock.Input

MediaBlock.Inputs

MediaBlock.Output

MediaBlock.Outputs

MediaBlock.HasInputs

MediaBlock.HasOutputs

MediaBlock.Build()

MediaBlock.CreateElements()

MediaBlock.AddElementsToPipeline()

MediaBlock.RemoveElementsFromPipeline()

MediaBlock.DeepCopy(string)

MediaBlock.Reset()

MediaBlock.ToYAMLBlock()

MediaBlock.ClearPads()

MediaBlock.Dispose(bool)

MediaBlock.Dispose()

object.Equals(object?)

object.Equals(object?, object?)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object?, object?)

object.ToString()

Extension Methods

MediaBlockExtensions.GetInputPadByType(IMediaBlock, MediaBlockPadMediaType)

MediaBlockExtensions.GetOutputPadByType(IMediaBlock, MediaBlockPadMediaType)

MediaBlockHelper.SendEndOfStream(MediaBlock)

MediaBlockHelper.SendEvent(MediaBlock, Event)

MediaBlockHelper.SetState(MediaBlock, State)

Constructors

CVEdgeDetectBlock(CVEdgeDetectSettings)

Initializes a new instance of the VisioForge.Core.MediaBlocks.OpenCV.CVEdgeDetectBlock class with the specified edge detection settings.

public CVEdgeDetectBlock(CVEdgeDetectSettings settings)

Parameters

settings CVEdgeDetectSettings

The edge detection configuration settings containing algorithm parameters.

Properties

Input

Gets the input pad for connecting video sources to be processed.

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Inputs

Gets all input pads for this edge detection block.

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Output

Gets the output pad for connecting to downstream processing blocks.

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Outputs

Gets all output pads for this edge detection block.

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Settings

Gets or sets the edge detection configuration settings. Defines algorithm selection, threshold parameters, and detection sensitivity.

public CVEdgeDetectSettings Settings { get; set; }

Property Value

CVEdgeDetectSettings

Type

Gets the media block type identifier.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Constructs and initializes the OpenCV edge detection element within the pipeline. This method creates the edge detection filter with the specified algorithm settings, establishes input and output pads, and prepares the block for computer vision processing.

public override bool Build()

Returns

bool

true if the edge detection element was successfully built and configured; false if initialization failed.

CleanUp()

Releases all resources and performs cleanup operations for this OpenCV edge detection block. This method disposes of the edge detection element and resets the build state.

public void CleanUp()

Dispose(bool)

Releases unmanaged and - optionally - managed resources.

protected override void Dispose(bool disposing)

Parameters

disposing bool

true to release both managed and unmanaged resources; false to release only unmanaged resources.

GetCore()

Gets the core BaseElement wrapper that provides additional functionality around the OpenCV edge detection element.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper instance that encapsulates the edge detection functionality.

GetElement()

Gets the underlying GStreamer element that performs the edge detection operation.

public Element GetElement()

Returns

Element

The GStreamer Element instance representing the OpenCV edge detection filter.

IsAvailable()

Determines whether this media block is available. Correct NuGet SDK redist should be included into your project. Checks for OpenCV library availability and edge detection algorithm support.

public static bool IsAvailable()

Returns

bool

true if OpenCV edge detection functionality is available; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Associates this OpenCV edge detection block with a pipeline and initializes its internal context. This method is called internally when the block is added to a pipeline.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The MediaBlocksPipeline instance that will manage this block.

See Also

MediaBlock

IMediaBlockInternals

IDisposable