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24 #ifndef __ARM_COMPUTE_NEBATCHNORMALIZATIONLAYER_H__
25 #define __ARM_COMPUTE_NEBATCHNORMALIZATIONLAYER_H__
27 #include "arm_compute/core/NEON/kernels/NEBatchNormalizationLayerKernel.h"
28 #include "arm_compute/core/Types.h"
29 #include "arm_compute/runtime/IFunction.h"
30 #include "arm_compute/runtime/NEON/functions/NEActivationLayer.h"
36 /** Basic function to run @ref NENormalizationLayerKernel and simulate a batch normalization layer.
38 * Batch normalization is calculated by:
39 * @f[ out_i = \gamma * (\frac{in_i - \mu_{B}}{\sqrt{\sigma^2_{B} + \epsilon}}) + \beta \equiv BN_{\gamma,\beta}(in_i) @f]
42 class NEBatchNormalizationLayer : public IFunction
45 /** Default constructor */
46 NEBatchNormalizationLayer();
47 /** Set the input and output tensors.
49 * @note If the output tensor is a nullptr or is equal to the input, the batch normalization function will be performed in-place
51 * @param[in, out] input Source tensor. In case of @p output tensor = nullptr, this tensor will store the result.
52 * 3 lower dimensions represent a single input with dimensions [width, height, FM].
53 * The rest are optional and used for representing batches. Data types supported: QS8/QS16/F16/F32.
54 * @param[out] output Destination tensor. Output will have the same number of dimensions as input. Data type supported: same as @p input
55 * @param[in] mean Mean values tensor. 1 dimension with size equal to the feature maps [FM]. Data types supported: Same as @p input
56 * @param[in] var Variance values tensor. 1 dimension with size equal to the feature maps [FM]. Data types supported: Same as @p input
57 * @param[in] beta (Optional) Beta values tensor info. 1 dimension with size equal to the feature maps [FM]. If not provided, default value for beta is 0. Data types supported: Same as @p input
58 * @param[in] gamma (Optional) Gamma values tensor info. 1 dimension with size equal to the feature maps [FM]. If not provided, default value for gamma is 1. Data types supported: Same as @p input
59 * @param[in] epsilon (Optional) Small value to avoid division with zero. Default value is 0.001f.
60 * @param[in] act_info (Optional) Activation layer information in case of a fused activation. Only RELU, BOUNDED_RELU and LU_BOUNDED_RELU supported.
62 void configure(ITensor *input, ITensor *output, const ITensor *mean, const ITensor *var, const ITensor *beta = nullptr, const ITensor *gamma = nullptr, float epsilon = 0.001f,
63 ActivationLayerInfo act_info = ActivationLayerInfo());
64 /** Static function to check if given info will lead to a valid configuration of @ref NEBatchNormalizationLayer
66 * @param[in] input Source tensor info. In case of @p output tensor = nullptr, this tensor will store the result.
67 * 3 lower dimensions represent a single input with dimensions [width, height, FM].
68 * The rest are optional and used for representing batches. Data types supported: QS8/QS16/F16/F32.
69 * @param[in] output Destination tensor info. Output will have the same number of dimensions as input. Data type supported: same as @p input
70 * @param[in] mean Mean values tensor info. 1 dimension with size equal to the feature maps [FM]. Data types supported: Same as @p input
71 * @param[in] var Variance values tensor info. 1 dimension with size equal to the feature maps [FM]. Data types supported: Same as @p input
72 * @param[in] beta (Optional) Beta values tensor info. 1 dimension with size equal to the feature maps [FM]. If not provided, default value for beta is 0. Data types supported: Same as @p input
73 * @param[in] gamma (Optional) Gamma values tensor info. 1 dimension with size equal to the feature maps [FM]. If not provided, default value for gamma is 1. Data types supported: Same as @p input
74 * @param[in] epsilon (Optional) Small value to avoid division with zero. Default value is 0.001f.
75 * @param[in] act_info (Optional) Activation layer information in case of a fused activation. Only RELU, BOUNDED_RELU and LU_BOUNDED_RELU supported.
79 static Status validate(const ITensorInfo *input, const ITensorInfo *output,
80 const ITensorInfo *mean, const ITensorInfo *var,
81 const ITensorInfo *beta = nullptr, const ITensorInfo *gamma = nullptr,
82 float epsilon = 0.001f, ActivationLayerInfo act_info = ActivationLayerInfo());
84 // Inherited methods overridden:
88 NEBatchNormalizationLayerKernel _norm_kernel; /**< Batch normalization layer kernel */
91 #endif /* __ARM_COMPUTE_NEBATCHNORMALIZATIONLAYER_H__ */