Integration Wrappers for Intel® Integrated Performance Primitives Developer Guide and Reference 2019

API Quick Reference Guide

  • 2020
  • 09/30/2019
  • Public Content
Contents

iwiFilterCannyDeriv

Syntax
class IwiFilterCannyDerivParams: public ::IwiFilterCannyDerivParams
{
public:
    IW_BASE_PARAMS_CONSTRUCTORS(IwiFilterCannyDerivParams, iwiFilterCannyDeriv_SetDefaultParams)
    IwiFilterCannyDerivParams(IppNormType norm = ippNormL2)
};
IW_DECL_CPP(IppStatus) iwiFilterCannyDeriv(
    const IwiImage                  &srcImageDx,
    const IwiImage                  &srcImageDy,
    IwiImage                        &dstImage,
    Ipp32f                           treshLow   = 50,
    Ipp32f                           treshHigh  = 150
    const IwiFilterCannyDerivParams &auxParams  = IwiFilterCannyDerivParams()
);
Parameters
srcImageDx
Reference to the X derivative of the source image.
srcImageDy
Reference to the Y derivative of the source image.
dstImage
Pointer to the destination image.
treshLow
Lower threshold for edges detection.
treshHigh
Upper threshold for edges detection.
auxParams
Reference to the auxiliary parameters structure.
Auxiliary Arguments
Argument
Default Value
Description
norm
ippNormL2
Normalization mode. Supported values:
ippNormL1
 and
ippNormL2
.
Description
This function applies the Canny edge detector to the input image derivatives. For more information, refer to the
iwiFilterCannyDeriv
 function description in
C Reference
.
Return Values
ippStsNoErr
No errors.
Exception Values
ippStsDataTypeErr
The
dataType
 value is illegal.
ippStsNumChannelsErr
The
channels
 value is illegal.
ippStsNotEvenStepErr
The
srcStep
 and/or
dstStep
 value is not divisible by size of elements.
ippStsNoMemErr
Failed to allocate memory.
ippStsSizeErr
Values of the
size
 fields are illegal.
ippStsNullPtrErr
At least one of the pointers (except
tile
) is
NULL
.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.