ICogAcqROI.GetROIXYWidthHeight Method

ICogAcqROI GetROIXYWidthHeight Method

Cognex VisionPro 9.8

Gets the ROI. The ROI allows a subset of the pixels defined by the video format to be returned by a call to CompleteAcquire.

Namespace: Cognex.VisionPro
Assembly: Cognex.VisionPro.Core (in Cognex.VisionPro.Core.dll) Version: 75.1.0.0

Syntax

C++

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void GetROIXYWidthHeight(
	out int x,
	out int y,
	out int width,
	out int height
)

void GetROIXYWidthHeight(
	out int x,
	out int y,
	out int width,
	out int height
)

Sub GetROIXYWidthHeight ( 
	<OutAttribute> ByRef x As Integer,
	<OutAttribute> ByRef y As Integer,
	<OutAttribute> ByRef width As Integer,
	<OutAttribute> ByRef height As Integer
)

Sub GetROIXYWidthHeight ( 
	<OutAttribute> ByRef x As Integer,
	<OutAttribute> ByRef y As Integer,
	<OutAttribute> ByRef width As Integer,
	<OutAttribute> ByRef height As Integer
)

void GetROIXYWidthHeight(
	[OutAttribute] int% x, 
	[OutAttribute] int% y, 
	[OutAttribute] int% width, 
	[OutAttribute] int% height
)

void GetROIXYWidthHeight(
	[OutAttribute] int% x, 
	[OutAttribute] int% y, 
	[OutAttribute] int% width, 
	[OutAttribute] int% height
)

Parameters

x: Type: System Int32
The x-coordinate of the start of the ROI.

y: Type: System Int32
The y-coordinate of the start of the ROI.

width: Type: System Int32
The width of the ROI

height: Type: System Int32
The height of the ROI.

Remarks

Sets the acquisition region of interest (ROI). The ROI allows a subset of the pixels defined by the video format to be returned by CompleteAcquire(Int32, Int32 , Int32 ).

Examples

C++

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using Cognex.VisionPro;

private CogFrameGrabbers myFrameGrabbers;
private ICogFrameGrabber myFrameGrabber;
private ICogAcqFifo myAcqFifo;

private void InitializeFifo()
{
    const string VIDEO_FORMAT = "Sony XC75 640x480";
    ICogAcqROI ROIParams;
    int x, y, width, height;

    myFrameGrabbers = new CogFrameGrabbers();
    myFrameGrabber = myFrameGrabbers[0];
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, 
        Cognex.VisionPro.CogAcqFifoPixelFormatConstants.Format8Grey, 0, false);

    ROIParams = myAcqFifo.OwnedROIParams;
    if (ROIParams != null)
        ROIParams.GetROIXYWidthHeight(x, y, width, height);
}

using Cognex.VisionPro;

private CogFrameGrabbers myFrameGrabbers;
private ICogFrameGrabber myFrameGrabber;
private ICogAcqFifo myAcqFifo;

private void InitializeFifo()
{
    const string VIDEO_FORMAT = "Sony XC75 640x480";
    ICogAcqROI ROIParams;
    int x, y, width, height;

    myFrameGrabbers = new CogFrameGrabbers();
    myFrameGrabber = myFrameGrabbers[0];
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, 
        Cognex.VisionPro.CogAcqFifoPixelFormatConstants.Format8Grey, 0, false);

    ROIParams = myAcqFifo.OwnedROIParams;
    if (ROIParams != null)
        ROIParams.GetROIXYWidthHeight(x, y, width, height);
}

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Imports Cognex.VisionPro

Private myFrameGrabbers As CogFrameGrabbers
Private myFrameGrabber As Cognex.VisionPro.ICogFrameGrabber
Private myAcqFifo As Cognex.VisionPro.ICogAcqFifo

Private Sub InitializeFifo()
    Const VIDEO_FORMAT = "Sony XC75 640x480"
    Dim ROIParams As Cognex.VisionPro.ICogAcqROI
    Dim x As Long, y As Long, width As Long, height As Long

    myFrameGrabbers = New CogFrameGrabbers
    myFrameGrabber = myFrameGrabbers.Item(0)
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, CogAcqFifoPixelFormatConstants.Format8Grey, 0, False)

    ROIParams = myAcqFifo.OwnedROIParams

    If Not ROIParams Is Nothing Then
        ROIParams.GetROIXYWidthHeight(x, y, width, height)
    End If
End Sub

Imports Cognex.VisionPro

Private myFrameGrabbers As CogFrameGrabbers
Private myFrameGrabber As Cognex.VisionPro.ICogFrameGrabber
Private myAcqFifo As Cognex.VisionPro.ICogAcqFifo

Private Sub InitializeFifo()
    Const VIDEO_FORMAT = "Sony XC75 640x480"
    Dim ROIParams As Cognex.VisionPro.ICogAcqROI
    Dim x As Long, y As Long, width As Long, height As Long

    myFrameGrabbers = New CogFrameGrabbers
    myFrameGrabber = myFrameGrabbers.Item(0)
    myAcqFifo = myFrameGrabber.CreateAcqFifo(VIDEO_FORMAT, CogAcqFifoPixelFormatConstants.Format8Grey, 0, False)

    ROIParams = myAcqFifo.OwnedROIParams

    If Not ROIParams Is Nothing Then
        ROIParams.GetROIXYWidthHeight(x, y, width, height)
    End If
End Sub