@spec enableWinograd(t(), boolean()) :: Evision.DNN.Model.t() | {:error, String.t()}

enableWinograd

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()
• useWinograd: bool

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

enableWinograd(useWinograd) -> retval

@spec getDecodeType(Keyword.t()) :: any() | {:error, String.t()}

@spec getDecodeType(t()) :: binary() | {:error, String.t()}

Get the decoding method

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

Return

• retval: string

@return the decoding method

Python prototype (for reference only):

getDecodeType() -> retval

@spec getVocabulary(Keyword.t()) :: any() | {:error, String.t()}

@spec getVocabulary(t()) :: [binary()] | {:error, String.t()}

Get the vocabulary for recognition.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

Return

• retval: [string]

@return vocabulary the associated vocabulary

Python prototype (for reference only):

getVocabulary() -> retval

@spec predict(t(), Evision.Mat.maybe_mat_in()) ::
  [Evision.Mat.t()] | {:error, String.t()}

Given the @p input frame, create input blob, run net and return the output @p blobs.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()
• frame: Evision.Mat

Return

• outs: [Evision.Mat].

  Allocated output blobs, which will store results of the computation.

Python prototype (for reference only):

predict(frame[, outs]) -> outs

@spec predict(t(), Evision.Mat.maybe_mat_in(), [{atom(), term()}, ...] | nil) ::
  [Evision.Mat.t()] | {:error, String.t()}

Given the @p input frame, create input blob, run net and return the output @p blobs.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()
• frame: Evision.Mat

Return

• outs: [Evision.Mat].

  Allocated output blobs, which will store results of the computation.

Python prototype (for reference only):

predict(frame[, outs]) -> outs

@spec recognize(t(), Evision.Mat.maybe_mat_in()) :: binary() | {:error, String.t()}

Given the @p input frame, create input blob, run net and return recognition result

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• frame: Evision.Mat.

  The input image

Return

• retval: string

@return The text recognition result

Python prototype (for reference only):

recognize(frame) -> retval

@spec recognize(t(), Evision.Mat.maybe_mat_in(), [Evision.Mat.maybe_mat_in()]) ::
  [binary()] | {:error, String.t()}

Given the @p input frame, create input blob, run net and return recognition result

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• frame: Evision.Mat.

  The input image

• roiRects: [Evision.Mat].

  List of text detection regions of interest (cv::Rect, CV_32SC4). ROIs is be cropped as the network inputs

Return

• results: [string].

  A set of text recognition results.

Python prototype (for reference only):

recognize(frame, roiRects) -> results

@spec setDecodeOptsCTCPrefixBeamSearch(t(), integer()) :: t() | {:error, String.t()}

Set the decoding method options for "CTC-prefix-beam-search" decode usage

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• beamSize: integer().

  Beam size for search

Keyword Arguments

• vocPruneSize: integer().

  Parameter to optimize big vocabulary search, only take top @p vocPruneSize tokens in each search step, @p vocPruneSize <= 0 stands for disable this prune.

Return

• retval: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

setDecodeOptsCTCPrefixBeamSearch(beamSize[, vocPruneSize]) -> retval

@spec setDecodeOptsCTCPrefixBeamSearch(
  t(),
  integer(),
  [{:vocPruneSize, term()}] | nil
) ::
  t() | {:error, String.t()}

Set the decoding method options for "CTC-prefix-beam-search" decode usage

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• beamSize: integer().

  Beam size for search

Keyword Arguments

• vocPruneSize: integer().

  Parameter to optimize big vocabulary search, only take top @p vocPruneSize tokens in each search step, @p vocPruneSize <= 0 stands for disable this prune.

Return

• retval: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

setDecodeOptsCTCPrefixBeamSearch(beamSize[, vocPruneSize]) -> retval

@spec setDecodeType(t(), binary()) :: t() | {:error, String.t()}

Set the decoding method of translating the network output into string

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()
• decodeType: string.The decoding method of translating the network output into string, currently supported type:
  • "CTC-greedy" greedy decoding for the output of CTC-based methods
  • "CTC-prefix-beam-search" Prefix beam search decoding for the output of CTC-based methods

Return

• retval: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

setDecodeType(decodeType) -> retval

@spec setInputCrop(t(), boolean()) :: Evision.DNN.Model.t() | {:error, String.t()}

Set flag crop for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• crop: bool.

  Flag which indicates whether image will be cropped after resize or not.

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setInputCrop(crop) -> retval

@spec setInputMean(t(), Evision.scalar()) ::
  Evision.DNN.Model.t() | {:error, String.t()}

Set mean value for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• mean: Evision.scalar().

  Scalar with mean values which are subtracted from channels.

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setInputMean(mean) -> retval

@spec setInputParams(Keyword.t()) :: any() | {:error, String.t()}

@spec setInputParams(t()) :: Evision.DNN.Model.t() | {:error, String.t()}

Set preprocessing parameters for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

Keyword Arguments

• scale: double.

  Multiplier for frame values.

• size: Size.

  New input size.

• mean: Evision.scalar().

  Scalar with mean values which are subtracted from channels.

• swapRB: bool.

  Flag which indicates that swap first and last channels.

• crop: bool.

  Flag which indicates whether image will be cropped after resize or not. blob(n, c, y, x) = scale * resize( frame(y, x, c) ) - mean(c) )

Python prototype (for reference only):

setInputParams([, scale[, size[, mean[, swapRB[, crop]]]]]) -> None

@spec setInputParams(
  t(),
  [crop: term(), mean: term(), scale: term(), size: term(), swapRB: term()]
  | nil
) :: Evision.DNN.Model.t() | {:error, String.t()}

Set preprocessing parameters for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

Keyword Arguments

• scale: double.

  Multiplier for frame values.

• size: Size.

  New input size.

• mean: Evision.scalar().

  Scalar with mean values which are subtracted from channels.

• swapRB: bool.

  Flag which indicates that swap first and last channels.

• crop: bool.

  Flag which indicates whether image will be cropped after resize or not. blob(n, c, y, x) = scale * resize( frame(y, x, c) ) - mean(c) )

Python prototype (for reference only):

setInputParams([, scale[, size[, mean[, swapRB[, crop]]]]]) -> None

@spec setInputScale(t(), Evision.scalar()) ::
  Evision.DNN.Model.t() | {:error, String.t()}

Set scalefactor value for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• scale: Evision.scalar().

  Multiplier for frame values.

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setInputScale(scale) -> retval

@spec setInputSize(
  t(),
  {number(), number()}
) :: Evision.DNN.Model.t() | {:error, String.t()}

Set input size for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• size: Size.

  New input size.

Return

• retval: Evision.DNN.Model.t()

Note: If shape of the new blob less than 0, then frame size not change.

Python prototype (for reference only):

setInputSize(size) -> retval

@spec setInputSize(t(), integer(), integer()) ::
  Evision.DNN.Model.t() | {:error, String.t()}

setInputSize

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• width: integer().

  New input width.

• height: integer().

  New input height.

Return

• retval: Evision.DNN.Model.t()

Has overloading in C++

Python prototype (for reference only):

setInputSize(width, height) -> retval

@spec setInputSwapRB(t(), boolean()) :: Evision.DNN.Model.t() | {:error, String.t()}

Set flag swapRB for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• swapRB: bool.

  Flag which indicates that swap first and last channels.

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setInputSwapRB(swapRB) -> retval

@spec setOutputNames(t(), [binary()]) :: Evision.DNN.Model.t() | {:error, String.t()}

Set output names for frame.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• outNames: [String].

  Names for output layers.

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setOutputNames(outNames) -> retval

@spec setPreferableBackend(t(), Evision.DNN.Backend.enum()) ::
  Evision.DNN.Model.t() | {:error, String.t()}

setPreferableBackend

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()
• backendId: dnn_Backend

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setPreferableBackend(backendId) -> retval

@spec setPreferableTarget(t(), Evision.DNN.Target.enum()) ::
  Evision.DNN.Model.t() | {:error, String.t()}

setPreferableTarget

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()
• targetId: dnn_Target

Return

• retval: Evision.DNN.Model.t()

Python prototype (for reference only):

setPreferableTarget(targetId) -> retval

@spec setVocabulary(t(), [binary()]) :: t() | {:error, String.t()}

Set the vocabulary for recognition.

Positional Arguments

• self: Evision.DNN.TextRecognitionModel.t()

• vocabulary: [string].

  the associated vocabulary of the network.

Return

• retval: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

setVocabulary(vocabulary) -> retval

@spec textRecognitionModel(Keyword.t()) :: any() | {:error, String.t()}

@spec textRecognitionModel(binary()) :: t() | {:error, String.t()}

@spec textRecognitionModel(Evision.DNN.Net.t()) :: t() | {:error, String.t()}

Variant 1:

Create text recognition model from network represented in one of the supported formats Call setDecodeType() and setVocabulary() after constructor to initialize the decoding method

Positional Arguments

• model: string.

  Binary file contains trained weights

Keyword Arguments

• config: string.

  Text file contains network configuration

Return

• self: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

TextRecognitionModel(model[, config]) -> <dnn_TextRecognitionModel object>

Variant 2:

Create Text Recognition model from deep learning network Call setDecodeType() and setVocabulary() after constructor to initialize the decoding method

Positional Arguments

• network: Evision.DNN.Net.t().

  Net object

Return

• self: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

TextRecognitionModel(network) -> <dnn_TextRecognitionModel object>

@spec textRecognitionModel(binary(), [{:config, term()}] | nil) ::
  t() | {:error, String.t()}

Create text recognition model from network represented in one of the supported formats Call setDecodeType() and setVocabulary() after constructor to initialize the decoding method

Positional Arguments

• model: string.

  Binary file contains trained weights

Keyword Arguments

• config: string.

  Text file contains network configuration

Return

• self: Evision.DNN.TextRecognitionModel.t()

Python prototype (for reference only):

TextRecognitionModel(model[, config]) -> <dnn_TextRecognitionModel object>