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diff --git a/arm_compute/runtime/CL/functions/CLNonMaximaSuppression3x3.h b/arm_compute/runtime/CL/functions/CLNonMaximaSuppression3x3.h
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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_CLNONMAXIMASUPPRESSION3X3_H__
+#define __ARM_COMPUTE_CLNONMAXIMASUPPRESSION3X3_H__
+
+#include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/CL/ICLSimpleFunction.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Basic function to execute non-maxima suppression over a 3x3 window. This function calls the following CL kernels:
+ *
+ * -# @ref CLFillBorderKernel (executed if border_mode == CONSTANT or border_mode == REPLICATE)
+ * -# @ref CLNonMaximaSuppression3x3Kernel
+ */
+class CLNonMaximaSuppression3x3 : public ICLSimpleFunction
+{
+public:
+    /** Initialise the function's source, destinations and border mode.
+     *
+     * @note The implementation supports just 2 border modes: UNDEFINED and CONSTANT
+     *       The constant values used with CONSTANT border mode is 0
+     *
+     * @param[in,out] input       Source tensor. Data types supported: U8, F32. (Written to only for @p border_mode != UNDEFINED)
+     * @param[out]    output      Destination for the Non-Maxima suppressions 3x3. Data types supported: same as @p input.
+     * @param[in]     border_mode Border mode to use for non-maxima suppression.
+     *                                   The implementation supports just 2 border modes: UNDEFINED and CONSTANT
+     */
+    void configure(ICLTensor *input, ICLTensor *output, BorderMode border_mode);
+};
+}
+#endif /* __ARM_COMPUTE_CLNONMAXIMASUPPRESSION3X3_H__ */