Function:HaarFwd

Performs one-level wavelet decomposition of an image using haar basis. The four resultant images are half the width and half the height of the original image

Function

CuviStatus haarFwd(CuviImage* srcImage, CuviImage* dstApprox, CuviImage* dstDetailX, CuviImage* dstDetailY, CuviImage* dstDetailXY, CuviStream* stream = NULL);

Parameters

Name	Type	Description
srcImage	CuviImage*	Input image
dstApprox	CuviImage*	Output approximation image
dstDetailX	CuviImage*	Output horizontal detail image
dstDetailY	CuviImage*	Output vertical detail image
dstDetailXY	CuviImage*	Output diagonal detail image
stream	CuviStream*	GPU stream ID for execution

Image Type Support

Input	Output
8uC1	32fC1 x 4

Sample

File:Haar.jpg

Example

//Input Image CuviImage *gimg = new CuviImage(size,depth,nChannels); //Four output images CuviImage *a = new CuviImage(sizeHalf,32,1); CuviImage *x = new CuviImage(sizeHalf,32,1); CuviImage *y = new CuviImage(sizeHalf,32,1); CuviImage *xy = new CuviImage(sizeHalf,32,1); //Populate the GPU image with pixel data gimg->upload(hostImg->imageData,hostImg->widthStep); //compute one-level haar wavelet decomposition cuvi::imageTransforms::haarFwd(gimg,a,x,y,xy);