diff options
Diffstat (limited to 'src/core/NEON/kernels/NECumulativeDistributionKernel.cpp')
-rw-r--r-- | src/core/NEON/kernels/NECumulativeDistributionKernel.cpp | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/src/core/NEON/kernels/NECumulativeDistributionKernel.cpp b/src/core/NEON/kernels/NECumulativeDistributionKernel.cpp deleted file mode 100644 index 58a9a2f1fb..0000000000 --- a/src/core/NEON/kernels/NECumulativeDistributionKernel.cpp +++ /dev/null @@ -1,114 +0,0 @@ -/* - * 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. - */ -#include "src/core/NEON/kernels/NECumulativeDistributionKernel.h" - -#include "arm_compute/core/Error.h" -#include "arm_compute/core/Helpers.h" -#include "arm_compute/core/IDistribution1D.h" -#include "arm_compute/core/ILut.h" -#include "arm_compute/core/ITensor.h" -#include "arm_compute/core/Types.h" -#include "arm_compute/core/Validate.h" -#include "src/core/helpers/AutoConfiguration.h" -#include "src/core/helpers/WindowHelpers.h" - -#include <algorithm> -#include <cmath> -#include <numeric> - -using namespace arm_compute; - -NECumulativeDistributionKernel::NECumulativeDistributionKernel() - : _input(nullptr), _distribution(nullptr), _cumulative_sum(nullptr), _output(nullptr) -{ -} - -bool NECumulativeDistributionKernel::is_parallelisable() const -{ - return false; -} - -void NECumulativeDistributionKernel::configure(const IImage *input, const IDistribution1D *distribution, IDistribution1D *cumulative_sum, ILut *output) -{ - ARM_COMPUTE_ERROR_ON_NULLPTR(input, distribution, cumulative_sum, output); - ARM_COMPUTE_ERROR_ON_TENSOR_NOT_2D(input); - - set_format_if_unknown(*input->info(), Format::U8); - - ARM_COMPUTE_ERROR_ON(distribution->num_bins() != cumulative_sum->num_bins()); - ARM_COMPUTE_ERROR_ON(distribution->num_bins() != output->num_elements()); - ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8); - ARM_COMPUTE_ERROR_ON(input->info()->data_type() != output->type()); - - _input = input; - _distribution = distribution; - _cumulative_sum = cumulative_sum; - _output = output; - - INEKernel::configure(calculate_max_window(*input->info())); -} - -void NECumulativeDistributionKernel::run(const Window &window, const ThreadInfo &info) -{ - ARM_COMPUTE_UNUSED(info); - ARM_COMPUTE_UNUSED(window); - ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); - ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window); - ARM_COMPUTE_ERROR_ON(_distribution->buffer() == nullptr); - ARM_COMPUTE_ERROR_ON(_cumulative_sum->buffer() == nullptr); - ARM_COMPUTE_ERROR_ON(_output->buffer() == nullptr); - ARM_COMPUTE_ERROR_ON_MSG(_distribution->num_bins() < 256, "Distribution must have 256 bins"); - - // Calculate the cumulative distribution (summed histogram). - const uint32_t *hist = _distribution->buffer(); - uint32_t *cumulative_sum = _cumulative_sum->buffer(); - uint8_t *output = _output->buffer(); - - // Calculate cumulative distribution - std::partial_sum(hist, hist + _histogram_size, cumulative_sum); - - // Get the number of pixels that have the lowest value in the input image - const uint32_t cd_min = *std::find_if(hist, hist + _histogram_size, [](const uint32_t &v) - { - return v > 0; - }); - const uint32_t image_size = cumulative_sum[_histogram_size - 1]; - - ARM_COMPUTE_ERROR_ON(cd_min > image_size); - - // Create mapping lookup table - if(image_size == cd_min) - { - std::iota(output, output + _histogram_size, 0); - } - else - { - const float diff = image_size - cd_min; - - for(unsigned int x = 0; x < _histogram_size; ++x) - { - output[x] = lround((cumulative_sum[x] - cd_min) / diff * 255.0f); - } - } -} |