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24 #ifndef __ARM_COMPUTE_NELAPLACIANPYRAMID_H__
25 #define __ARM_COMPUTE_NELAPLACIANPYRAMID_H__
27 #include "arm_compute/core/Types.h"
28 #include "arm_compute/runtime/IFunction.h"
29 #include "arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h"
30 #include "arm_compute/runtime/NEON/functions/NEDepthConvertLayer.h"
31 #include "arm_compute/runtime/NEON/functions/NEGaussian5x5.h"
32 #include "arm_compute/runtime/NEON/functions/NEGaussianPyramid.h"
33 #include "arm_compute/runtime/Pyramid.h"
43 /** Basic function to execute laplacian pyramid. This function calls the following NEON kernels and functions:
45 * -# @ref NEGaussianPyramidHalf
46 * -# @ref NEGaussian5x5
47 * -# @ref NEArithmeticSubtraction
49 * First a Gaussian pyramid is created. Then, for each level i, the corresponding tensor I(i) is blurred with the Gaussian 5x5 filter, and then
50 * difference between the two tensors is the corresponding level L(i) of the Laplacian pyramid.
51 * L(i) = I(i) - Gaussian5x5(I(i))
52 * Level 0 has always the same first two dimensions as the input tensor.
54 class NELaplacianPyramid : public IFunction
59 /** Initialise the function's source, destinations and border mode.
61 * @param[in] input Source tensor. Data type supported: U8.
62 * @param[out] pyramid Destination pyramid tensors, Data type supported at each level: S16.
63 * @param[out] output The lowest resolution tensor necessary to reconstruct the input tensor from the pyramid. Data type supported: S16.
64 * The first two dimensions of this tensor must match the first two dimensions of the tensor in the last level of the pyramid, that is:
65 * out.width = in.width() / pow(2,pyramid_levels-1) and out.height = in.height() / pow(2,pyramid_levels-1)
66 * @param[in] border_mode Border mode to use.
67 * @param[in] constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT.
70 void configure(const ITensor *input, IPyramid *pyramid, ITensor *output, BorderMode border_mode, uint8_t constant_border_value);
72 // Inherited methods overridden:
77 NEGaussianPyramidHalf _gaussian_pyr_function;
78 std::unique_ptr<NEGaussian5x5[]> _convf;
79 std::unique_ptr<NEArithmeticSubtraction[]> _subf;
82 NEDepthConvertLayer _depth_function;
85 #endif /*__ARM_COMPUTE_NELAPLACIANPYRAMID_H__ */