diff --git a/arm_compute/core/CL/kernels/CLSobel3x3Kernel.h b/arm_compute/core/CL/kernels/CLSobel3x3Kernel.h
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+++ b/arm_compute/core/CL/kernels/CLSobel3x3Kernel.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_CLSOBEL3X3KERNEL_H__
+#define __ARM_COMPUTE_CLSOBEL3X3KERNEL_H__
+
+#include "arm_compute/core/CL/ICLKernel.h"
+
+namespace arm_compute
+{
+class ICLTensor;
+
+/** Interface for the kernel to run a 3x3 Sobel filter on a tensor. */
+class CLSobel3x3Kernel : public ICLKernel
+{
+public:
+    /** Default constructor: initialize all the pointers to nullptr and parameters to zero. */
+    CLSobel3x3Kernel();
+    /** Prevent instances of this class from being copied (As this class contains pointers). */
+    CLSobel3x3Kernel(const CLSobel3x3Kernel &) = delete;
+    /** Prevent instances of this class from being copied (As this class contains pointers). */
+    CLSobel3x3Kernel &operator=(const CLSobel3x3Kernel &) = delete;
+    /** Allow instances of this class to be moved */
+    CLSobel3x3Kernel(CLSobel3x3Kernel &&) = default;
+    /** Allow instances of this class to be moved */
+    CLSobel3x3Kernel &operator=(CLSobel3x3Kernel &&) = default;
+    /** Default destructor */
+    ~CLSobel3x3Kernel() = default;
+    /** Initialise the kernel's source, destination and border.
+     *
+     * @note At least one of output_x or output_y must be set.
+     *
+     * @param[in]  input            Source tensor. Data types supported: U8.
+     * @param[out] output_x         (Optional) Destination tensor for the X gradient, Data types supported: S16.
+     * @param[out] output_y         (Optional) Destination tensor for the Y gradient, Data types supported: S16.
+     * @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_x, ICLTensor *output_y, bool border_undefined);
+
+    // Inherited methods overridden:
+    void run(const Window &window, cl::CommandQueue &queue) override;
+    BorderSize border_size() const override;
+
+private:
+    const ICLTensor *_input;       /**< Input tensor */
+    ICLTensor       *_output_x;    /**< Output tensor for Sobel X */
+    ICLTensor       *_output_y;    /**< Output tensor for Sobel Y */
+    bool             _run_sobel_x; /**< Do we need to run Sobel X ? */
+    bool             _run_sobel_y; /**< Do we need to run Sobel Y ? */
+};
+}
+#endif /*__ARM_COMPUTE_CLSOBEL3X3KERNEL_H__ */