Function:Subtract

Subtracts pixel values of second image from the first image

Function

CuviStatus subtract(CuviImage* srcImage1, CuviImage* srcImage2, CuviImage* dstImage, CuviStream* stream = NULL);

Parameters

Name	Type	Description
srcImage1	CuviImage*	First Image
srcImage2	CuviImage*	Second Image
dstImage	CuviImage*	Resultant Image
stream	CuviStream*	GPU stream ID for execution

Image Type Support

Input 1	Input 2	Output
8uC1	8uC1	8uC1
8uC3	8uC3	8uC3
16uC1	16uC1	16uC1
16uC3	16uC3	16uC3
32fC1	32fC1	32fC1
32fC3	32fC3	32fC3

Sample

Error creating thumbnail: Unable to save thumbnail to destination First Image	Error creating thumbnail: Unable to save thumbnail to destination Second Image
Error creating thumbnail: Unable to save thumbnail to destination Result

Example

CuviImage* gimg1 = new CuviImage(size,img1->depth,img1->nChannels); CuviImage* gimg2 = new CuviImage(size,img2->depth,img2->nChannels); CuviImage* gout = new CuviImage(size,img2->depth,img2->nChannels); //Upload input data gimg1->upload(img1->imageData,img1->widthStep); gimg2->upload(img2->imageData,img2->widthStep); //Subtract two images cuvi::arithmeticLogical::subtract(gimg1,gimg2,gout);