Struct opencv::dnn::NormalizeBBoxLayer

pub struct NormalizeBBoxLayer { /* fields omitted */ }

- normalization layer.

Parameters

• p: Normalization factor. The most common p = 1 for - normalization or p = 2 for - normalization or a custom one.
• eps: Parameter to prevent a division by zero.
• across_spatial: If true, normalize an input across all non-batch dimensions. Otherwise normalize an every channel separately.

Across spatial: @f[ norm = \sqrt[p]{\epsilon + \sum_{x, y, c} |src(x, y, c)|^p } \ dst(x, y, c) = \frac{ src(x, y, c) }{norm} @f]

Channel wise normalization: @f[ norm(c) = \sqrt[p]{\epsilon + \sum_{x, y} |src(x, y, c)|^p } \ dst(x, y, c) = \frac{ src(x, y, c) }{norm(c)} @f]

Where x, y - spatial coordinates, c - channel.

An every sample in the batch is normalized separately. Optionally, output is scaled by the trained parameters.

Methods

impl NormalizeBBoxLayer

pub fn as_raw_NormalizeBBoxLayer(&self) -> *mut c_void

pub unsafe fn from_raw_ptr(ptr: *mut c_void) -> Self

impl NormalizeBBoxLayer

pub fn create(params: &LayerParams) -> Result<PtrOfNormalizeBBoxLayer>

Trait Implementations

impl Algorithm for NormalizeBBoxLayer

fn as_raw_Algorithm(&self) -> *mut c_void

fn clear(&mut self) -> Result<()>

Clears the algorithm state

fn write(&self, fs: &mut FileStorage) -> Result<()>

Stores algorithm parameters in a file storage

fn write_1(&self, fs: &PtrOfFileStorage, name: &str) -> Result<()>

simplified API for language bindings

fn read(&mut self, _fn: &FileNode) -> Result<()>

Reads algorithm parameters from a file storage

fn empty(&self) -> Result<bool>

Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read

fn save(&self, filename: &str) -> Result<()>

Saves the algorithm to a file. In order to make this method work, the derived class must implement Algorithm::write(FileStorage& fs).

fn get_default_name(&self) -> Result<String>

Returns the algorithm string identifier. This string is used as top level xml/yml node tag when the object is saved to a file or string.

impl Layer for NormalizeBBoxLayer

fn as_raw_Layer(&self) -> *mut c_void

fn blobs(&mut self) -> Result<VectorOfMat>

List of learned parameters must be stored here to allow read them by using Net::getParam().

fn set_blobs(&mut self, val: VectorOfMat) -> Result<()>

List of learned parameters must be stored here to allow read them by using Net::getParam().

fn name(&mut self) -> Result<String>

Name of the layer instance, can be used for logging or other internal purposes.

fn set_name(&mut self, val: &str) -> Result<()>

Name of the layer instance, can be used for logging or other internal purposes.

fn _type(&mut self) -> Result<String>

Type name which was used for creating layer by layer factory.

fn set_type(&mut self, val: &str) -> Result<()>

Type name which was used for creating layer by layer factory.

fn preferable_target(&self) -> Result<i32>

prefer target for layer forwarding

fn finalize_to(
    &mut self,
    inputs: &dyn ToInputArray,
    outputs: &mut dyn ToOutputArray
) -> Result<()>

Computes and sets internal parameters according to inputs, outputs and blobs. ## Parameters * inputs: vector of already allocated input blobs * outputs: [out] vector of already allocated output blobs

fn forward(
    &mut self,
    inputs: &dyn ToInputArray,
    outputs: &mut dyn ToOutputArray,
    internals: &mut dyn ToOutputArray
) -> Result<()>

Given the @p input blobs, computes the output @p blobs. ## Parameters * inputs: the input blobs. * outputs: [out] allocated output blobs, which will store results of the computation. * internals: [out] allocated internal blobs

fn forward_fallback(
    &mut self,
    inputs: &dyn ToInputArray,
    outputs: &mut dyn ToOutputArray,
    internals: &mut dyn ToOutputArray
) -> Result<()>

Given the @p input blobs, computes the output @p blobs. ## Parameters * inputs: the input blobs. * outputs: [out] allocated output blobs, which will store results of the computation. * internals: [out] allocated internal blobs

fn finalize(&mut self, inputs: &VectorOfMat) -> Result<VectorOfMat>

Deprecated:

Use Layer::finalize(InputArrayOfArrays, OutputArrayOfArrays) instead

Deprecated: Use Layer::finalize(InputArrayOfArrays, OutputArrayOfArrays) instead

fn run(
    &mut self,
    inputs: &VectorOfMat,
    outputs: &mut VectorOfMat,
    internals: &mut VectorOfMat
) -> Result<()>

Deprecated:

This method will be removed in the future release.

Allocates layer and computes output. Deprecated: This method will be removed in the future release.

fn input_name_to_index(&mut self, input_name: &str) -> Result<i32>

Returns index of input blob into the input array. ## Parameters * inputName: label of input blob

fn output_name_to_index(&mut self, output_name: &str) -> Result<i32>

Returns index of output blob in output array. @see inputNameToIndex()

fn support_backend(&mut self, backend_id: i32) -> Result<bool>

Ask layer if it support specific backend for doing computations. ## Parameters * backendId: computation backend identifier. @see Backend

fn init_halide(
    &mut self,
    inputs: &VectorOfPtrOfBackendWrapper
) -> Result<PtrOfBackendNode>

Returns Halide backend node. ## Parameters * inputs: Input Halide buffers. @see BackendNode, BackendWrapper

fn init_inf_engine(
    &mut self,
    inputs: &VectorOfPtrOfBackendWrapper
) -> Result<PtrOfBackendNode>

fn try_attach(&mut self, node: &PtrOfBackendNode) -> Result<PtrOfBackendNode>

Implement layers fusing. ## Parameters * node: Backend node of bottom layer. @see BackendNode

fn set_activation(&mut self, layer: &PtrOfActivationLayer) -> Result<bool>

Tries to attach to the layer the subsequent activation layer, i.e. do the layer fusion in a partial case. ## Parameters * layer: The subsequent activation layer.

fn try_fuse(&mut self, top: &mut PtrOfLayer) -> Result<bool>

Try to fuse current layer with a next one ## Parameters * top: Next layer to be fused. ## Returns True if fusion was performed.

fn get_scale_shift(&self, scale: &mut Mat, shift: &mut Mat) -> Result<()>

Returns parameters of layers with channel-wise multiplication and addition. ## Parameters * scale: [out] Channel-wise multipliers. Total number of values should be equal to number of channels. * shift: [out] Channel-wise offsets. Total number of values should be equal to number of channels.

fn unset_attached(&mut self) -> Result<()>

"Deattaches" all the layers, attached to particular layer.

fn get_memory_shapes(
    &self,
    inputs: &VectorOfVectorOfint,
    required_outputs: i32,
    outputs: &mut VectorOfVectorOfint,
    internals: &mut VectorOfVectorOfint
) -> Result<bool>

fn get_flops(
    &self,
    inputs: &VectorOfVectorOfint,
    outputs: &VectorOfVectorOfint
) -> Result<i64>

fn set_params_from(&mut self, params: &LayerParams) -> Result<()>

Initializes only #name, #type and #blobs fields.

impl Drop for NormalizeBBoxLayer

fn drop(&mut self)

Executes the destructor for this type.

impl Send for NormalizeBBoxLayer