void boxFilter_64f(cv::Mat& src, cv::Mat& dest, const int r, const int boxType, const int parallelType);
void boxFilter_32f(cv::Mat& src, cv::Mat& dest, int r, int boxType, int parallelType);
void boxFilter_8u(cv::Mat& src, cv::Mat& dest, int r, int boxType, int parallelType);I will merge there 3 functions into one boxFilter. these functions are for double/float/uchar image.
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src image
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dest image
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kernel radius
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box filter type (details are presented)
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parallel type (3 type, NAIVE: sirial, OMP: paralleized by openmp, PARALLEL_FOR_ parallelized by OpenCV framework)
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O(r^2) convolution
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O(r) separable convolution
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O(1) integral image
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O(1) separable summed area table (SSAT)
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O(1) one pass SAT
enum BoxTypes { BOX_OPENCV,//using opencv function
BOX_NAIVE,// naive convolution O(r^2) implementation
BOX_NAIVE_SSE,// SSE convolution O(r^2) implementation
BOX_NAIVE_AVX,// AVXconvolution O(r^2) implementation
BOX_SEPARABLE_HV, //naive separable implementation, horizontal then vertical O(r) implementation
BOX_SEPARABLE_HV_SSE, //SSE separable implementation, horizontal then vertical O(r) implementation
BOX_SEPARABLE_HV_AVX, //AVX separable implementation, horizontal then vertical O(r) implementation
BOX_SEPARABLE_VH_AVX, //AVX separable implementation, vertical then horizontal O(r) implementation (no naive, SSE)
BOX_SEPARABLE_VHI, //naive separable implementation, intereleve vertical filtering andhorizontal filtering O(r) implementation
BOX_SEPARABLE_VHI_SSE, //naive separable implementation, intereleve vertical filtering andhorizontal filtering O(r) implementation
BOX_SEPARABLE_VHI_AVX, //naive separable implementation, intereleve vertical filtering andhorizontal filtering O(r) implementation
BOX_INTEGRAL, //naive integral image based O(1) implementation
BOX_INTEGRAL_SSE, //SSE integral image based O(1) implementation
BOX_INTEGRAL_AVX, //AVX integral image based O(1) implementation
BOX_INTEGRAL_ONEPASS, //naive integral image based O(1) implementation (we cannot vectorize)
BOX_INTEGRAL_ONEPASS_AREA,// ??
BOX_SSAT_HV, //naive O(1) separable horizontal then vertical
BOX_SSAT_HV_SSE, //SSE O(1) separable horizontal then vertical
BOX_SSAT_HV_AVX, //AVX O(1) separable horizontal then vertical
BOX_SSAT_HV_BLOCKING,
BOX_SSAT_HV_BLOCKING_SSE,
BOX_SSAT_HV_BLOCKING_AVX,
BOX_SSAT_HV_4x4,
BOX_SSAT_HV_8x8,
BOX_SSAT_HV_ROWSUM_GATHER_SSE,
BOX_SSAT_HV_ROWSUM_GATHER_AVX,
BOX_SSAT_HtH,
BOX_SSAT_HtH_SSE,
BOX_SSAT_HtH_AVX,
BOX_SSAT_VH, //naive O(1) separable vertical then horizontal filtering
BOX_SSAT_VH_SSE, //SSE O(1) separable vertical then horizontal filtering
BOX_SSAT_VH_AVX, //AVX
BOX_SSAT_VH_ROWSUM_GATHER_SSE,
BOX_SSAT_VH_ROWSUM_GATHER_AVX,
BOX_SSAT_VtV,
BOX_SSAT_VtV_SSE,
BOX_SSAT_VtV_AVX,
BOX_OPSAT, // one pas SAT
BOX_OPSAT_2Div,
BOX_OPSAT_nDiv,
NumBoxTypes // num of boxtypes. must be last element
};