Difference between revisions of "Function:Subtract"

From CUVI Wiki
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<syntaxhighlight lang="cpp">
<syntaxhighlight lang="cpp">
CuviStatus subtract(CuviImage* srcImage1,
CuviStatus subtract(const CuviImage& src1,
                     CuviImage* srcImage2,
                     const CuviImage& src2,
                     CuviImage* dstImage,
                     CuviImage& dst,
                     CuviStream* stream = NULL);
                     const CuviStream& stream = CuviStream());
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! Description
! Description
|-
|-
| srcImage1
| src1
| CuviImage*
| const CuviImage&
| First Image
| First Image
|-
|-
| srcImage2
| src2
| CuviImage*
| const CuviImage&
| Second Image
| Second Image
|-
|-
| dstImage
| dst
| CuviImage*
| CuviImage&
| Resultant Image
| Resultant Image
|-
|-
| stream  
| stream  
| CuviStream*
| const CuviStream&
| GPU stream ID for execution
| GPU stream ID for execution


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<syntaxhighlight lang="cpp">
<syntaxhighlight lang="cpp">


CuviImage* gimg1 = new CuviImage(size,img1->depth,img1->nChannels);
CuviImage gimg1 = cuvi::io::loadImage(path);
CuviImage* gimg2 = new CuviImage(size,img2->depth,img2->nChannels);
CuviImage gimg2 = cuvi::io::loadImage(path);
CuviImage* gout = new CuviImage(size,img2->depth,img2->nChannels);
CuviImage gout;
 
//Upload input data
gimg1->upload(img1->imageData,img1->widthStep);
gimg2->upload(img2->imageData,img2->widthStep);


//Subtract two images
//Subtract two images

Revision as of 17:17, 19 April 2013

Subtracts pixel values of second image from the first image

Function

CuviStatus subtract(const CuviImage& src1,
                    const CuviImage& src2,
                    CuviImage& dst,
                    const CuviStream& stream = CuviStream());

Parameters

Name Type Description
src1 const CuviImage& First Image
src2 const CuviImage& Second Image
dst CuviImage& Resultant Image
stream const 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 = cuvi::io::loadImage(path);
CuviImage gimg2 = cuvi::io::loadImage(path);
CuviImage gout;

//Subtract two images
cuvi::arithmeticLogical::subtract(gimg1,gimg2,gout);
Retrieved from "https://wiki.cuvilib.com/index.php?title=Function:Subtract&oldid=678"