From ebcebf1dee7f8314976b1e0cabd62b4cf893d765 Mon Sep 17 00:00:00 2001 From: Michalis Spyrou Date: Wed, 21 Oct 2020 00:04:14 +0100 Subject: COMPMID-3638: Move NEON kernels Signed-off-by: Michalis Spyrou Change-Id: Ieed3e4bc8be7fef80c90c5094599b477a56fc473 Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4285 Comments-Addressed: Arm Jenkins Reviewed-by: Georgios Pinitas Tested-by: Arm Jenkins --- .../NEON/kernels/NECumulativeDistributionKernel.h | 85 ++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 src/core/NEON/kernels/NECumulativeDistributionKernel.h (limited to 'src/core/NEON/kernels/NECumulativeDistributionKernel.h') diff --git a/src/core/NEON/kernels/NECumulativeDistributionKernel.h b/src/core/NEON/kernels/NECumulativeDistributionKernel.h new file mode 100644 index 0000000000..1f8c65b5fa --- /dev/null +++ b/src/core/NEON/kernels/NECumulativeDistributionKernel.h @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2016-2020 Arm Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#ifndef ARM_COMPUTE_NECUMULATIVEDISTRIBUTIONKERNEL_H +#define ARM_COMPUTE_NECUMULATIVEDISTRIBUTIONKERNEL_H + +#include "src/core/NEON/INEKernel.h" + +#include + +namespace arm_compute +{ +class IDistribution1D; +class ILut; +class ITensor; +using IImage = ITensor; + +/** Interface for the cumulative distribution (cummulative summmation) calculation kernel. + * + * This kernel calculates the cumulative sum of a given distribution (meaning that each output element + * is the sum of all its previous elements including itself) and creates a lookup table with the normalized + * pixel intensities which is used for improve the constrast of the image. + */ +class NECumulativeDistributionKernel : public INEKernel +{ +public: + const char *name() const override + { + return "NECumulativeDistributionKernel"; + } + /** Default constructor */ + NECumulativeDistributionKernel(); + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NECumulativeDistributionKernel(const NECumulativeDistributionKernel &) = delete; + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NECumulativeDistributionKernel &operator=(const NECumulativeDistributionKernel &) = delete; + /** Allow instances of this class to be moved */ + NECumulativeDistributionKernel(NECumulativeDistributionKernel &&) = default; + /** Allow instances of this class to be moved */ + NECumulativeDistributionKernel &operator=(NECumulativeDistributionKernel &&) = default; + /** Default destructor */ + ~NECumulativeDistributionKernel() = default; + /** Set the input and output distribution. + * + * @param[in] input Input image. Data type supported: U8 + * @param[in] distribution Unnormalized 256-bin distribution of the input image. + * @param[out] cumulative_sum Cummulative distribution (Summed histogram). Should be same size as @p distribution. + * @param[out] output Equalization lookup table. Should consist of 256 entries of U8 elements. + */ + void configure(const IImage *input, const IDistribution1D *distribution, IDistribution1D *cumulative_sum, ILut *output); + + // Inherited methods overridden: + void run(const Window &window, const ThreadInfo &info) override; + bool is_parallelisable() const override; + +private: + const IImage *_input; /**< Input image. */ + const IDistribution1D *_distribution; /**< Input histogram of the input image. */ + IDistribution1D *_cumulative_sum; /**< The cummulative distribution. */ + ILut *_output; /**< Output with the equalization lookup table. */ +private: + static const uint32_t _histogram_size = 256; /**< Default histogram size of 256. */ +}; +} // namespace arm_compute +#endif /*ARM_COMPUTE_NECUMULATIVEDISTRIBUTIONKERNEL_H */ -- cgit v1.2.1