Calculates X and Y gradients of image
Function
CuviStatus imageGradients(CuviImage* srcImage,
CuviImage* dstX,
CuviImage* dstY,
CuviGradientKernelType type = CUVI_GRADIENT_SOBEL_3x3,
CuviStream* stream = NULL);
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Parameters
| Name
|
Type
|
Description
|
| srcImage
|
CuviImage*
|
Input image
|
| dstX
|
CuviImage*
|
Horizontal image gradient
|
| dstY
|
CuviImage*
|
Vertical image gradient
|
| type
|
CuviGradientKernelType
|
Supports:
| CUVI_GRADIENT_CENTRAL_DIFFERENCE
|
| CUVI_GRADIENT_SOBEL_3x3
|
| CUVI_GRADIENT_SOBEL_5x5
|
| CUVI_GRADIENT_SCHARR_3x3
|
|
| stream
|
CuviStream*
|
GPU stream ID for execution
|
Image Type Support
| Input
|
Output
|
| 8uC1
|
32fC1
|
| 8uC3
|
32fC3
|
Sample
 Input Image |
 Sobel X, 3x3 |
 Sobel Y, 3x3 |
Example
//Container for input Image
CuviImage* gimg = new CuviImage(size,depth,nChannels);
//Containers for gradients
CuviImage* gX = new CuviImage(size,32,nChannels);
CuviImage* gY = new CuviImage(size,32,nChannels);
//Populating GPU input image
gimg->upload(hostImg->imageData, hostImg->widthStep);
//function call
cuvi::computerVision::imageGradients(gimg,gX,gY,CUVI_GRADIENT_CENTRAL_DIFFERENCE);
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