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• Description: Performs instance normalization. Compared with , aclnnInstanceNorm normalizes each sample instance instead of the entire batch, making this function more suitable for processing data such as images.
• Formula:$$y = {{x-E(x)}\over\sqrt {Var(x)+eps}} * gamma + beta$$

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Each operator has calls. First, aclnnInstanceNormGetWorkspaceSize is called to obtain the input parameters and compute the workspace size required by the process. Then, aclnnInstanceNorm is called to perform computation.

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• Parameters:

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• Returns:

  aclnnStatus: status code. For details, see .

  The first-phase API implements input parameter verification. The following errors may be thrown:

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• Parameters:

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• Returns:

  aclnnStatus: status code. For details, see .

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• Function dimensions:
  • The supported data types are as follows:
    • x, gamma, beta, y, mean, and variance support FLOAT32 and FLOAT16.
  • The data format can be ND.
  • The shape of x and y must be four-dimensional. gamma/beta must be one-dimensional and consistent with the C axis of x and y.
  • The H*W size of x and y must be greater than or equal to 32 bytes, and the C axis size must also be greater than or equal to 32 bytes.
  • dataFormat can only be NHWC or NCHW.
• Description of boundary value scenarios:
  • When the input is Inf, the output is Inf.
  • When the input is NaN, the output is NaN.
• Deterministic compute:
  • aclnnInstanceNorm defaults to a deterministic implementation.

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The following example is for reference only. For details, see .