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> Unreal Engine Blueprint API Reference > Open CV > Ar Uco > OpenCV ArUco Detect Markers

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OpenCV ArUco Detect Markers

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Detects all ArUco markers in the supplied image

Target is Open CVBlueprint Function Library

OpenCV ArUco Detect Markers

In Render Target

Select Asset

In Dictionary

Dict4x4

In Dictionary Size

DictSize50

Debug Draw Markers

Estimate Pose

In Marker Length in Meters

In Lens Distortion Parameters

Out Debug Texture

Select Asset

Out Detected Markers

Return Value

Inputs

	In Exec
	In Render Target Texture Render Target 2D Object Reference	Input image in which to search for markers
	In Dictionary EOpenCVArucoDictionary Enum	Which ArUco marker dictionary to use for detection
	In Dictionary Size EOpenCVArucoDictionarySize Enum	The size of the ArUco marker dictionary
	Debug Draw Markers Boolean	If true, output a Texture2D showing the detected marker debug info overlaid on the input image
	Estimate Pose Boolean	If true, return the 3D pose for each marker relative to the camera position
	In Marker Length in Meters Float (single-precision)	Length in meters of one side of the physical marker (required if bEstimatePose is True)
	In Lens Distortion Parameters Open CVLens Distortion Parameters Base Structure (by ref)

Outputs

	Out Exec
	Out Debug Texture Texture 2D Object Reference	Output debug image (required if bDebugDrawMarkers is True)
	Out Detected Markers Array of Open CVAruco Detected Marker Structures	Output array of markers detected in the input image
	Return Value Integer	Total number of markers detected in the input image

This API reference document refers to UE 5.0 or earlier. API docs for 5.1 or later are currently being finalized and will be available at a later date.