Intel® Integrated Performance Primitives Developer Reference

Developer Reference

  • 2021
  • 01/15/2021
  • Public Content
Contents

DilateBorder

Performs dilation of an image.

Syntax

IppStatus ippiDilateBorder_<mod>(const Ipp<datatype>*
pSrc
, int
srcStep
, Ipp<datatype>*
pDst
, int
dstStep
, IppiSize
roiSize
, IppiBorderType
borderType
, Ipp<datatype>
borderValue
, const IppiMorphState*
pSpec
, Ipp8u*
pBuffer
);
Supported values for
mod
:
8u_C1R
16u_C1R
16s_C1R
32f_C1R
IppStatus ippiDilateBorder_<mod>(const Ipp<datatype>*
pSrc
, int
srcStep
, Ipp<datatype>*
pDst
, int
dstStep
, IppiSize
roiSize
, IppiBorderType
borderType
, const Ipp<datatype>
borderValue[3]
, const IppiMorphState*
pSpec
, Ipp8u*
pBuffer
);
Supported values for
mod
:
8u_C3R
32f_C3R
IppStatus ippiDilateBorder_<mod>(const Ipp<datatype>*
pSrc
, int
srcStep
, Ipp<datatype>*
pDst
, int
dstStep
, IppiSize
roiSize
, IppiBorderType
borderType
, const Ipp<datatype>
borderValue[4]
, const IppiMorphState*
pSpec
, Ipp8u*
pBuffer
);
Supported values for
mod
:
8u_C4R
32f_C4R
IppStatus ippiDilateBorder_1u_C1R(const Ipp8u*
pSrc
, int
srcStep
, int
srcBitOffset
, Ipp8u*
pDst
, int
dstStep
, int
dstBitOffset
, IppiSize
roiSize
, IppiBorderType
borderType
, Ipp8u
borderValue
, const IppiMorphState*
pSpec
, Ipp8u*
pBuffer
);
Include Files
ippcv.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
,
ipps.h
,
ippi.h
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
,
ippi.lib
Parameters
pSrc
Pointer to the source image ROI.
srcStep
Distance in bytes between the starting points of consecutive lines in the source image.
srcBitOffset
Offset, in bits, from the first byte of the source image (for
1u_C1R
 flavor).
pDst
Pointer to the destination image ROI.
dstStep
Distance, in bytes, between the starting points of consecutive lines in the destination image.
dstBitOffset
Offset, in bits, from the first byte of the destination image (for
1u_C1R
 flavor).
roiSize
Size of the source and destination image ROI.
borderType
Type of border. Possible values are:
ippBorderRepl
Border is replicated from the edge pixels.
ippBorderInMem
Border is obtained from the source image pixels in memory.
borderValue
Constant value to assign to pixels of the constant border. This parameter is applicable only to the
ippBorderConst
 border type.
pSpec
Pointer to the specification structure.
pBuffer
Pointer to the external buffer required for dilation operations.
Description
This function operates with ROI.
This function expands a rectangular ROI area inside a one-channel two-dimensional image using a mask specified in the specification structure
pSpec
. Before using this function, you need to initialize the structure using the
MorphologyBorderInit
 function.
The output pixel is set to the maximum of the corresponding input pixel and its neighboring pixels that are picked out by the nonzero mask values.
Return Values
ippStsNoErr
Indicates no error.
ippStsNullPtrErr
Indicates an error when one of the specified pointers is
NULL
.
ippStsSizeErr
Indicates an error when:
  • roiSize
     has a field with a zero or negative value
  • roiSize.width
     is more than the maximum ROI
    roiWidth
     passed to the initialization function
ippStsStepErr
Indicates an error when
srcStep
 or
dstStep
 is less than
roiSize.width
*
<
pixelSize
>.
ippStsNotEvenStepErr
Indicates an error when one of the step values for 16-bit integer images is not divisible by 2.
ippStsBorderErr
Indicates an error when
borderType
 has an illegal value.
ippStsInplaceModeNotSupportedErr
Indicates an error when the
pSrc
 pointer is equal to the
pDst
 pointer.

Example

The code example below demonstrates how to use the
ippiMorphologyBorderGetSize_16u_C1R
,
ippiMorphologyBorderInit_16u_C1R
, and
ippiDilateBorder_16u_C1R
 functions to perform dilation of the source image. 
IppStatus func_MorfDilateBorder()
{
    IppiMorphState* pSpec = NULL;
    Ipp8u* pBuffer = NULL;
    IppiSize roiSize = {5, 5};
    Ipp8u pMask[3*3] = {1, 1, 1,
                        1, 0, 1,
                        1, 1, 1};
    IppiSize maskSize = {3, 3};
    Ipp16u pSrc[5*5] = { 1, 2, 4, 1, 2,
                        5, 1, 2, 1, 2,
                        1, 2, 1, 2, 1,
                        1, 2, 1, 2, 1,
                        2, 1, 5, 1, 2};
    Ipp16u pDst[5*5];
    int srcStep = 5*sizeof(Ipp16u);
    int dstStep = 5*sizeof(Ipp16u);
    int dstSize = 5;
    IppStatus status = ippStsNoErr;
    int specSize = 0, bufferSize = 0;
    IppiBorderType borderType= ippBorderRepl;
    Ipp16u borderValue = 0;
    
    status = ippiMorphologyBorderGetSize_16u_C1R( roiSize, maskSize, &specSize, &bufferSize );
    if (status != ippStsNoErr) return status;
    
    pSpec = (IppiMorphState*)ippsMalloc_8u(specSize);
    pBuffer = (Ipp8u*)ippsMalloc_8u(bufferSize);

    status = ippiMorphologyBorderInit_16u_C1R( roiSize, pMask, maskSize, pSpec, pBuffer );
    if (status != ippStsNoErr) {
        ippsFree(pBuffer);
        ippsFree(pSpec);
        return status;
    }
    
    status = ippiDilateBorder_16u_C1R( pSrc, srcStep, pDst, dstStep, roiSize, borderType, borderValue, pSpec, pBuffer);

    ippsFree(pBuffer);
    ippsFree(pSpec);
    return status;
}
The result is as follows:
pDst->
 5 5 4 4 2
 5 5 4 4 2
 5 5 2 2 2
 2 5 5 5 2
 2 5 5 5 2

Product and Performance Information

1

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