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diff --git a/src/core/CL/kernels/CLNonLinearFilterKernel.h b/src/core/CL/kernels/CLNonLinearFilterKernel.h
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+++ b/src/core/CL/kernels/CLNonLinearFilterKernel.h
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+/*
+ * Copyright (c) 2017-2020 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_CLNONLINEARFILTERKERNEL_H
+#define ARM_COMPUTE_CLNONLINEARFILTERKERNEL_H
+
+#include "arm_compute/core/Types.h"
+#include "src/core/CL/ICLSimple2DKernel.h"
+
+#include <cstdint>
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Interface for the kernel to apply a non-linear filter */
+class CLNonLinearFilterKernel : public ICLSimple2DKernel
+{
+public:
+    /** Default constructor */
+    CLNonLinearFilterKernel();
+    /** Set the source, destination and border mode of the kernel
+     *
+     * @param[in]  input            Source tensor. Data types supported: U8
+     * @param[out] output           Destination tensor. Data types supported: U8
+     * @param[in]  function         Non linear function to perform
+     * @param[in]  mask_size        Mask size. Supported sizes: 3, 5
+     * @param[in]  pattern          Mask pattern
+     * @param[in]  mask             The given mask. Will be used only if pattern is specified to PATTERN_OTHER
+     * @param[in]  border_undefined True if the border mode is undefined. False if it's replicate or constant.
+     */
+    void configure(const ICLTensor *input, ICLTensor *output, NonLinearFilterFunction function,
+                   unsigned int mask_size, MatrixPattern pattern, const uint8_t *mask,
+                   bool border_undefined);
+    /** Set the source, destination and border mode of the kernel
+     *
+     * @param[in]  compile_context  The compile context to be used.
+     * @param[in]  input            Source tensor. Data types supported: U8
+     * @param[out] output           Destination tensor. Data types supported: U8
+     * @param[in]  function         Non linear function to perform
+     * @param[in]  mask_size        Mask size. Supported sizes: 3, 5
+     * @param[in]  pattern          Mask pattern
+     * @param[in]  mask             The given mask. Will be used only if pattern is specified to PATTERN_OTHER
+     * @param[in]  border_undefined True if the border mode is undefined. False if it's replicate or constant.
+     */
+    void configure(const CLCompileContext &compile_context, const ICLTensor *input, ICLTensor *output, NonLinearFilterFunction function,
+                   unsigned int mask_size, MatrixPattern pattern, const uint8_t *mask,
+                   bool border_undefined);
+
+    // Inherited methods overridden:
+    BorderSize border_size() const override;
+
+private:
+    BorderSize _border_size; /**< Border size */
+};
+} // namespace arm_compute
+#endif /*ARM_COMPUTE_CLNONLINEARFILTERKERNEL_H */