ResizeNearest
Changes an image size using the nearest neighbor interpolation method.
Syntax
IppStatus ippiResizeNearest_<mod>(const Ipp<datatype>*
pSrc
, Ipp32s
srcStep
, Ipp<datatype>*
pDst
, Ipp32s
dstStep
, IppiPoint
dstOffset
, IppiSize
dstSize
, const IppiResizeSpec_32f*
pSpec
, Ipp8u*
pBuffer
);
Supported values for
mod
:8u_C1R | 16u_C1R | 16s_C1R | 32f_C1R |
8u_C3R | 16u_C3R | 16s_C3R | 32f_C3R |
8u_C4R | 16u_C4R | 16s_C4R | 32f_C4R |
Platform-aware functions
IppStatus ippiResizeNearest_<mod>_L(const Ipp<datatype>*
pSrc
, IppSizeL
srcStep
, Ipp<datatype>*
pDst
, IppSizeL
dstStep
, IppiPointL
dstOffset
, IppiSizeL
dstSize
, const IppiResizeSpec*
pSpec
, Ipp8u*
pBuffer
);
Supported values for
mod
:8u_C1R | 16u_C1R | 16s_C1R | 32f_C1R |
8u_C3R | 16u_C3R | 16s_C3R | 32f_C3R |
8u_C4R | 16u_C4R | 16s_C4R | 32f_C4R |
Threading layer (TL) functions
IppStatus ippiResizeNearest_<mod>_LT(const Ipp<datatype>*
pSrc
, IppSizeL
srcStep
, Ipp<datatype>*
pDst
, IppSizeL
dstStep
, const IppiResizeSpec_LT*
pSpec
, Ipp8u*
pBuffer
);
Supported values for
mod
:8u_C1R | 16u_C1R | 16s_C1R | 32f_C1R |
8u_C3R | 16u_C3R | 16s_C3R | 32f_C3R |
8u_C4R | 16u_C4R | 16s_C4R | 32f_C4R |
Include Files
ippi.h
Flavors with the
_LT
suffix: ippi_tl.h
Flavors with the
_L
suffix: ippi_l.h
Domain Dependencies
Flavors declared in
ippi.h
:Headers:
ippcore.h
,
ippvm.h
,
ipps.h
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
Flavors declared in
ippi_tl.h
:Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
,
ippi.lib
,
ippcore_tl.lib
,
ippi_tl.lib
Parameters
- pSrc
- Pointer to the source image.
- srcStep
- Distance, in bytes, between the starting points of consecutive lines in the source image buffer.
- pDst
- Pointer to the destination image.
- dstStep
- Distance, in bytes, between the starting points of consecutive lines in the destination image buffer.
- dstOffset
- Offset of the tiled destination image with respect to the destination image origin.
- dstSize
- Size of the destination image in pixels.
- pSpec
- Pointer to the specification structure for the resize filter.
- pBuffer
- Pointer to the work buffer.
Description
This function changes an image size using the nearest neighbor interpolation method. The image size can be either reduced or increased in each direction, depending on the destination image size.
This function operates with ROI. It resizes the source image ROI origin to the destination image ROI origin. You need to define the destination image ROI origin by the following parameters: the offset of the tiled destination image with respect to the destination image origin and the destination image size. The source image ROI origin is defined automatically. To obtain the source image ROI, use the
ippiResizeGetSrcRoi
function with the corresponding mod
value. To obtain the source image ROI origin offset, call the ippiResizeGetSrcOffset
function with the corresponding mod
value. Parameters pSrc
and pDst
must point to the processed source and destination image ROI origins, respectively.Function flavors operating on images of 64-bit sizes (with the
L
suffix) can process only whole images.The interpolation algorithm applied uses only pixels of the source image origin that are inside of the image boundaries.
Before using the
ippiResizeNearest
function, you need to initialize the resize specification structure using the ippiResizeNearestInit
function and compute the size of the external buffer pBuffer
using the ippiResizeGetBufferSize
function for the corresponding flavor. Return Values
- ippStsNoErr
- Indicates no error.
- ippStsNullPtrErr
- Indicates an error when one of the specified pointers isNULL.
- ippStsNoOperation
- Indicates a warning when width or height of the destination image is equal to zero.
- ippStsContextMatchErr
- Indicates an error when pointer to the spec structure is invalid.
- ippStsSizeErr
- Indicates an error when width or height of the source or destination image is negative.
- ippStsStepErr
- Indicates an error when the step value is not data type multiple.
- ippStsOutOfRangeErr
- Indicates an error when the destination image offset point is outside the destination image origin.
- ippStsSizeWrn
- Indicates a warning when the destination image size is more than the destination image origin size.