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authorAnthony Barbier <anthony.barbier@arm.com>2017-09-04 18:44:23 +0100
committerAnthony Barbier <anthony.barbier@arm.com>2018-09-17 13:03:09 +0100
commit6ff3b19ee6120edf015fad8caab2991faa3070af (patch)
treea7a6dcd16dfd56d79fa1b56a313caeebcc939b68 /arm_compute/runtime/CL/functions/CLEqualizeHistogram.h
downloadComputeLibrary-6ff3b19ee6120edf015fad8caab2991faa3070af.tar.gz
COMPMID-344 Updated doxygen
Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
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+/*
+ * 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_CLEQUALIZEHISTOGRAM_H__
+#define __ARM_COMPUTE_CLEQUALIZEHISTOGRAM_H__
+
+#include "arm_compute/core/CL/kernels/CLHistogramKernel.h"
+#include "arm_compute/core/CL/kernels/CLTableLookupKernel.h"
+#include "arm_compute/runtime/CL/CLDistribution1D.h"
+#include "arm_compute/runtime/CL/CLLut.h"
+#include "arm_compute/runtime/IFunction.h"
+
+#include <cstdint>
+
+namespace arm_compute
+{
+class ICLTensor;
+using ICLImage = ICLTensor;
+
+/** Basic function to execute histogram equalization. This function calls the following CL kernels:
+ *
+ * -# @ref CLHistogramKernel
+ * -# @ref CLTableLookupKernel
+ *
+ */
+class CLEqualizeHistogram : public IFunction
+{
+public:
+ /** Default Constructor. */
+ CLEqualizeHistogram();
+ /** Initialise the kernel's inputs.
+ *
+ * @param[in] input Input image. Data types supported: U8.
+ * @param[out] output Output of same data type with equalized brightness and contrast.
+ */
+ void configure(const ICLImage *input, ICLImage *output);
+
+ // Inherited methods overridden:
+ void run() override;
+
+private:
+ CLHistogramKernel _histogram_kernel; /**< Kernel that calculates the histogram of input. */
+ CLHistogramBorderKernel _border_histogram_kernel; /**< Kernel that calculates the histogram on the borders. */
+ CLTableLookupKernel _map_histogram_kernel; /**< Kernel that maps the input to output using the lut. */
+ CLDistribution1D _hist; /**< Distribution that holds the histogram of the input image. */
+ CLDistribution1D _cum_dist; /**< Distribution that holds the cummulative distribution of the input histogram. */
+ CLLut _cd_lut; /**< Holds the equalization lookuptable. */
+ static const uint32_t max_range = 256; /**< Histogram range of the internal histograms. */
+ static const uint32_t nr_bins = 256; /**< Histogram bins of the internal histograms. */
+};
+}
+#endif /*__ARM_COMPUTE_CLEQUALIZEHISTOGRAM_H__ */