Filter with an integer vertical column kernel
MT, SSE2
| FwStatus | fwiFilterColumn_8u_C1R | ( | const Fw8u * pSrc, int srcStep, Fw8u * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_8u_C3R | ( | const Fw8u * pSrc, int srcStep, Fw8u * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_8u_C4R | ( | const Fw8u * pSrc, int srcStep, Fw8u * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_8u_AC4R | ( | const Fw8u * pSrc, int srcStep, Fw8u * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_16s_C1R | ( | const Fw16s * pSrc, int srcStep, Fw16s * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_16s_C3R | ( | const Fw16s * pSrc, int srcStep, Fw16s * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_16s_C4R | ( | const Fw16s * pSrc, int srcStep, Fw16s * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_16s_AC4R | ( | const Fw16s * pSrc, int srcStep, Fw16s * pDst, int dstStep, FwiSize dstRoiSize, const Fw32s * pKernel, int kernelSize, int yAnchor, int divisor ); | |
| FwStatus | fwiFilterColumn_32f_C1R | ( | const Fw32f * pSrc, int srcStep, Fw32f * pDst, int dstStep, FwiSize dstRoiSize, const Fw32f * pKernel, int kernelSize, int yAnchor ); | |
| FwStatus | fwiFilterColumn_32f_C3R | ( | const Fw32f * pSrc, int srcStep, Fw32f * pDst, int dstStep, FwiSize dstRoiSize, const Fw32f * pKernel, int kernelSize, int yAnchor ); | |
| FwStatus | fwiFilterColumn_32f_C4R | ( | const Fw32f * pSrc, int srcStep, Fw32f * pDst, int dstStep, FwiSize dstRoiSize, const Fw32f * pKernel, int kernelSize, int yAnchor ); | |
| FwStatus | fwiFilterColumn_32f_AC4R | ( | const Fw32f * pSrc, int srcStep, Fw32f * pDst, int dstStep, FwiSize dstRoiSize, const Fw32f * pKernel, int kernelSize, int yAnchor ); |
| divisor | An integer value by which a result is divided. | |
| dstRoiSize | Destination image ROI size. | |
| dstStep | Destination buffer step size (width of the buffer in bytes). | |
| kernelSize | Specifies the size of the kernel used in calculations. | |
| pDst | Pointer to a location in a destination buffer. | |
| pKernel | Pointer to the kernel array. | |
| pSrc | Pointer to a location in a source buffer. | |
| srcStep | Source buffer step size (width of the buffer in bytes). | |
| yAnchor | Anchor cell that specifies the vertical alignment of the kernel with respect to the input pixel. |
These functions step through an ROI in a source buffer, calculate the sum of products of the kernel values and the corresponding pixel values in an area defined by the kernel size and anchor coordinate, then divide by the divisor.
The filtered data is written to a destination buffer.
The vertical column kernel is an array of signed 32-bit integer values; the anchor coordinate location is relative to the bottom of the kernel.
Functions that operate on 8-bit unsigned data assume that the kernel values are small (in the -4096 to 4096 range).
If the results of the intermediate calculations exceed 24 bits, calculation errors may occur.
For very small kernel values, the functions use very fast code, at the expense of accuracy (+/- 1.5).