WarpBilinearBack

Perform inverse warp bilinear transform

Synopsis

FwStatus   fwiWarpBilinearBack_8u_C1R ( const Fw8u * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw8u * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_8u_C3R ( const Fw8u * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw8u * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_8u_C4R ( const Fw8u * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw8u * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_8u_AC4R ( const Fw8u * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw8u * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_32f_C1R ( const Fw32f * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw32f * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_32f_C3R ( const Fw32f * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw32f * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_32f_C4R ( const Fw32f * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw32f * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_32f_AC4R ( const Fw32f * pSrcFwiSize srcSizeint srcStepFwiRect srcRoiFw32f * pDstint dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_8u_P3R ( const Fw8u * const pSrc[3]FwiSize srcSizeint srcStepFwiRect srcRoiFw8u * const pDst[3]int dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_8u_P4R ( const Fw8u * const pSrc[4]FwiSize srcSizeint srcStepFwiRect srcRoiFw8u * const pDst[4]int dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_32f_P3R ( const Fw32f* const pSrc[3]FwiSize srcSizeint srcStepFwiRect srcRoiFw32f* const pDst[3]int dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );
FwStatus   fwiWarpBilinearBack_32f_P4R ( const Fw32f* const pSrc[4]FwiSize srcSizeint srcStepFwiRect srcRoiFw32f* const pDst[4]int dstStepFwiRect dstRoiconst double coeffs[2][4]int interpolation );

Parameters

coeffs[2][4]   Coefficients for Warp Affine Bilinear transform.
dstRoi   Destination image ROI.
dstStep   Destination buffer step size (width of the buffer in bytes).
interpolation   Specifies the method of interpolation.
pDst   Pointer to a location in a destination buffer.
pDst[3]   Pointer to a location in a three-channel planar destination buffer (array values point to a location in each plane).
pDst[4]   Pointer to a location in a four-channel planar destination buffer (array values point to a location in each plane).
pSrc   Pointer to a location in a source buffer.
pSrc[3]   Pointer to a location in a three-channel planar source buffer (array values point to a location in each plane).
pSrc[4]   Pointer to a location in a four-channel planar source buffer (array values point to a location in each plane).
srcRoi   Source image ROI.
srcSize   Source image size.
srcStep   Source buffer step size (width of the buffer in bytes).

Description

These functions step through a source ROI, perform an inverse warp bilinear transform on the source data, apply a specified method of interpolation, and write the data to a destination ROI.

Edge smoothing interpolation is applicable only when the destination quadrangle is completely within the destination image ROI.

The following transformation formula is used.

 c00*x'y' + c01*x' + c02*y' + c03 = x
 c10*x'y' + c11*x' + c12*y' + c13 = y

Where cij represents the transform coefficients

The following interpolation modes are available.

 FWI_INTER_NN: nearest neighbor interpolation
 FWI_INTER_LINEAR: linear interpolation
 FWI_INTER_CUBIC: cubic interpolation