ResizeGetSrcRoi
Computes the ROI of the source image for resizing by tile processing.
Syntax
Single precision
IppStatus ippiResizeGetSrcRoi_<mod>(
const
IppiResizeSpec_32f*
pSpec
, IppiPoint
dstRoiOffset
, IppiSize
dstRoiSize
, IppiPoint*
srcRoiOffset
, IppiSize*
srcRoiSize
);
Supported values for
mod
:8u | 16u | 16s | 32f |
Double precision
IppStatus ippiResizeGetSrcRoi_64f(
const
IppiResizeSpec_64f*
pSpec
, IppiPoint
dstRoiOffset
, IppiSize
dstRoiSize
, IppiPoint*
srcRoiOffset
, IppiSize*
srcRoiSize
);
Processing images with platform-aware functions
IppStatus ippiResizeGetSrcRoi_L(
const
IppiResizeSpec*
pSpec
, IppiPointL
dstRoiOffset
, IppiSizeL
dstRoiSize
, IppiPointL*
srcRoiOffset
, IppiSizeL*
srcRoiSize
);
Include Files
ippi.h
Flavors with the
_L
suffix: ippi_l.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
,
ipps.h
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
Parameters
- pSpec
- Pointer to the spec structure for the resize filter.
- dstRoiOffset
- Offset of the tiled destination image ROI.
- dstRoiSize
- Size of the tiled destination image ROI.
- srcRoiOffset
- Offset of the source image ROI.
- srcRoiSize
- Pointer to the size of the source image ROI.
Description
This function computes the ROI of the processed source image using the processed ROI of the destination image for the corresponding resize transform by tile processing. The
pSpec
parameter defines the resize algorithm parameters. Prior to using the ippiResizeGetSrcRoi
function, you need to initialize the pSpec
parameter by calling one of the following functions: ippiResizeNearestInit
, ippiResizeLinearInit
, ippiResizeCubicInit
, ippiResizeLanczosInit
, or ippiResizeSuperInit
.If the destination ROI size exceeds the image origin, the source ROI will be obtained for an intersection of the destination ROI and image origin.
Return Values
- ippStsNoErr
- Indicates no error.
- ippStsNullPtrErr
- Indicates an error if one of the specified pointers isNULL.
- ippStsContextMatchErr
- Indicates an error if pointer to the spec structure is invalid.
- ippStsOutOfRangeErr
- Indicates an error if the destination image offset point is outside the destination image origin.
- ippStsSizeWrn
- Indicates a warning if the destination ROI exceeds the destination image origin.