Class NPPNativeMethods.NPPi.LinearTransforms

Linear image transforms, like Fourier and DCT transformations.

Inheritance

System.Object

NPPNativeMethods.NPPi.LinearTransforms

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 LinearTransforms

Methods

nppiMagnitude_32fc32f_C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize)

32-bit floating point complex to 32-bit floating point magnitude.

Converts complex-number pixel image to single channel image computing the result pixels as the magnitude of the complex values.

Declaration

public static NppStatus nppiMagnitude_32fc32f_C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI)

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).

Returns

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

nppiMagnitudeSqr_32fc32f_C1R(CUdeviceptr, Int32, CUdeviceptr, Int32, NppiSize)

32-bit floating point complex to 32-bit floating point squared magnitude.

Converts complex-number pixel image to single channel image computing the result pixels as the squared magnitude of the complex values.

The squared magnitude is an itermediate result of magnitude computation and can thus be computed faster than actual magnitude. If magnitudes are required for sorting/comparing only, using this function instead of nppiMagnitude_32fc32f_C1R can be a worthwhile performance optimization.

Declaration

public static NppStatus nppiMagnitudeSqr_32fc32f_C1R(CUdeviceptr pSrc, int nSrcStep, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI)

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).

Returns

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