Class NPPNativeMethods.NPPi.ColorToGray

RGB Color to Gray conversion using user supplied conversion coefficients.

Here is how NPP converts gamma corrected RGB Color to Gray using user supplied conversion coefficients.

nGray =  aCoeffs[0] * R + aCoeffs[1] * G + aCoeffs[2] * B; 

Inheritance

System.Object

NPPNativeMethods.NPPi.ColorToGray

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: ManagedCuda.NPP

Assembly: NPP.dll

Syntax

public static class ColorToGray

Methods

nppiColorToGray_16s_AC4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 16-bit signed packed RGB with alpha to 1 channel 16-bit signed packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_16s_AC4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_16s_C3C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

3 channel 16-bit signed packed RGB to 1 channel 16-bit signed packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_16s_C3C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_16s_C4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 16-bit signed packed RGBA with alpha to 1 channel 16-bit signed packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_16s_C4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_16u_AC4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 16-bit unsigned packed RGB with alpha to 1 channel 16-bit unsigned packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_16u_AC4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_16u_C3C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

3 channel 16-bit unsigned packed RGB to 1 channel 16-bit unsigned packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_16u_C3C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_16u_C4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 16-bit unsigned packed RGBA to 1 channel 16-bit unsigned packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_16u_C4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_32f_AC4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 32-bit floating point packed RGB with alpha to 1 channel 32-bit floating point packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_32f_AC4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_32f_C3C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

3 channel 32-bit floating point packed RGB to 1 channel 32-bit floating point packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_32f_C3C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_32f_C4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 32-bit floating point packed RGBA with alpha to 1 channel 32-bit floating point packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_32f_C4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_8u_AC4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 8-bit unsigned packed RGB with alpha to 1 channel 8-bit unsigned packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_8u_AC4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_8u_C3C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

3 channel 8-bit unsigned packed RGB to 1 channel 8-bit unsigned packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_8u_C3C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiColorToGray_8u_C4C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize, Single[])

4 channel 8-bit unsigned packed RGBA to 1 channel 8-bit unsigned packed Gray conversion.

Declaration

public static NppStatus nppiColorToGray_8u_C4C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float[] aCoeffs)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single[]	aCoeffs	fixed size array of constant floating point conversion coefficient values, one per color channel.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError