Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference
A newer version of this document is available. Customers should click here to go to the newest version.
ResizeAntialiasingLanczosInit
Initializes the specification structure for image resizing with antialiasing using interpolation with the Lanczos filter.
Syntax
IppStatus ippiResizeAntialiasingLanczosInit(IppiSize srcSize, IppiSize dstSize, Ipp32u numLobes, IppiResizeSpec_32f* pSpec, Ipp8u* pInitBuf);
64f equivalent function
IppStatus ippiResizeAntialiasingLanczosInit_64f(IppiSize srcSize, IppiSize dstSize, Ipp32u numLobes, IppiResizeSpec_64f* pSpec, Ipp8u* pInitBuf);
Platform-aware function
IppStatus ippiResizeAntialiasingLanczosInit_L(IppiSizeL srcSize, IppiSizeL dstSize, IppDataType dataType, Ipp32u numLobes, IppiResizeSpec* pSpec, Ipp8u* pInitBuf);
Threading layer (TL) function
IppStatus ippiResizeAntialiasingLanczosInit_LT(IppiSizeL srcSize, IppiSizeL dstSize, IppDataType dataType, Ipp32u numChannels, Ipp32u numLobes, IppiResizeSpec_LT* pSpec, Ipp8u* pInitBuf);
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
srcSize |
Size of the source image, in pixels. |
dstSize |
Size of the destination image, in pixels. |
numLobes |
Number of lobes for the Lanczos window. Possible values: 2 or 3. |
numChannels |
Number of image channels. Possible values: 1, 3, or 4. |
dataType |
Data type of the image. Supported values: ipp8u, ipp16u, ipp16s, ipp32f, ipp64f. |
pSpec |
Pointer to the specification structure for the resize filter. |
pInitBuf |
Pointer to the temporary buffer for initialization of the cubic filter. |
Description
This function initializes the IppiResizeSpec_32f structure for the resize operation with antialiasing using interpolation with the Lanczos filter. The Lanczos interpolation method is based on the 2-lobed or 3-lobed Lanczos window function as an interpolation function depending on the value of the numLobes parameter. Note, that ippiResizeAntialiasingLanczosInit_64f will initialize the IppiResizeSpec_64f structure.
Before using these functions, calculate the size of the temporary buffer and specification structure using the ippiResizeGetSize function with the antialiasing parameter equal to 1.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when one of the specified pointers is NULL. |
ippStsNoOperation |
Indicates a warning when width or height of the image is equal to zero. |
ippStsSizeErr |
Indicates an error if width or height of the source or destination image is negative. |
ippStsExceededSizeErr |
Indicates an error If width or height of the source or destination image exceeds 33554431 (0x1FFFFFF) (only for platform-aware and TL functions). |
ippStsDataTypeErr |
Indicates an error if dataType has an illegal value. |