From 6ff3b19ee6120edf015fad8caab2991faa3070af Mon Sep 17 00:00:00 2001 From: Anthony Barbier Date: Mon, 4 Sep 2017 18:44:23 +0100 Subject: COMPMID-344 Updated doxygen Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae --- .../runtime/NEON/functions/NEEqualizeHistogram.h | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 arm_compute/runtime/NEON/functions/NEEqualizeHistogram.h (limited to 'arm_compute/runtime/NEON/functions/NEEqualizeHistogram.h') diff --git a/arm_compute/runtime/NEON/functions/NEEqualizeHistogram.h b/arm_compute/runtime/NEON/functions/NEEqualizeHistogram.h new file mode 100644 index 0000000000..6cf8008480 --- /dev/null +++ b/arm_compute/runtime/NEON/functions/NEEqualizeHistogram.h @@ -0,0 +1,77 @@ +/* + * Copyright (c) 2016, 2017 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_NEEQUALIZEHISTOGRAM_H__ +#define __ARM_COMPUTE_NEEQUALIZEHISTOGRAM_H__ + +#include "arm_compute/core/NEON/kernels/NECumulativeDistributionKernel.h" +#include "arm_compute/core/NEON/kernels/NEHistogramKernel.h" +#include "arm_compute/core/NEON/kernels/NETableLookupKernel.h" +#include "arm_compute/runtime/Distribution1D.h" +#include "arm_compute/runtime/IFunction.h" +#include "arm_compute/runtime/Lut.h" + +#include + +namespace arm_compute +{ +class ITensor; +using IImage = ITensor; + +/** Basic function to execute histogram equalization. This function calls the following NEON kernels: + * + * -# @ref NEHistogramKernel + * -# @ref NECumulativeDistributionKernel + * -# @ref NETableLookupKernel + * + */ +class NEEqualizeHistogram : public IFunction +{ +public: + /** Default Constructor. */ + NEEqualizeHistogram(); + /** Initialise the kernel's inputs. + * + * @note Currently the width of the input image must be a multiple of 16. + * + * @param[in] input Input image. Data type supported: U8. + * @param[out] output Output image. Data type supported: same as @p input + */ + void configure(const IImage *input, IImage *output); + + // Inherited methods overridden: + void run() override; + +private: + NEHistogramKernel _histogram_kernel; /**< Kernel that calculates the histogram of input. */ + NECumulativeDistributionKernel _cd_histogram_kernel; /**< Kernel that calculates the cumulative distribution + and creates the relevant LookupTable. */ + NETableLookupKernel _map_histogram_kernel; /**< Kernel that maps the input to output using the lut. */ + Distribution1D _hist; /**< Distribution that holds the histogram of the input image. */ + Distribution1D _cum_dist; /**< Distribution that holds the cummulative distribution of the input histogram. */ + Lut _cd_lut; /**< Holds the equalization lookuptable. */ + static constexpr uint32_t nr_bins{ 256 }; /**< Histogram bins of the internal histograms. */ + static constexpr uint32_t max_range{ nr_bins - 1 }; /**< Histogram range of the internal histograms. */ +}; +} +#endif /*__ARM_COMPUTE_NEEQUALIZEHISTOGRAM_H__ */ -- cgit v1.2.1