NVIDIA 2D Image And Signal Performance Primitives (NPP)
Version 10.2.*.*

Primitives for computing the norms of an image, the norms of difference, and the relative errors of two images. More...
Modules  
Norm_Inf  
Primitives for computing the infinity norm of an image. 

Norm_L1  
Primitives for computing the L1 norm of an image. 

Norm_L2  
Primitives for computing the L2 norm of an image. 

NormDiff_Inf  
Primitives for computing the infinity norm of difference of pixels between two images. 

NormDiff_L1  
Primitives for computing the L1 norm of difference of pixels between two images. 

NormDiff_L2  
Primitives for computing the L2 norm of difference of pixels between two images. 

NormRel_Inf  
Primitives for computing the relative error of infinity norm between two images. 

NormRel_L1  
Primitives for computing the relative error of L1 norm between two images. 

NormRel_L2  
Primitives for computing the relative error of L2 norm between two images. 

Primitives for computing the norms of an image, the norms of difference, and the relative errors of two images.
Given an image with width and height ,
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Given two images and both with width and height ,
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Given two images and both with width and height ,
The norm functions require the addition device scratch buffer for the computations.
pSrc1  SourceImage Pointer. 
nSrc1Step  SourceImage Line Step. 
pSrc2  SourceImage Pointer. 
nSrc2Step  SourceImage Line Step. 
oSizeROI  RegionofInterest (ROI). 
pMask  MaskImage Pointer. 
nMaskStep  MaskImage Line Step. 
nCOI  Channel_of_Interest Number. 
pNorm  Pointer to the norm value. 
pNormDiff  Pointer to the computed norm of differences. 
pNormRel  Pointer to the computed relative error for the infinity norm of two images. 
pDeviceBuffer  Pointer to the required device memory allocation, Scratch Buffer and Host Pointer. Use nppiNormInfGetBufferHostSize_XX_XXX to compute the required size (in bytes). 
nppStreamCtx  Application Managed Stream Context. 