cv::dnn::Model Class Reference

This class is presented high-level API for neural networks. More...

#include <opencv2/dnn/dnn.hpp>

Inheritance diagram for cv::dnn::Model:

Public Member Functions
	Model ()
	Model (const Model &)=default
	Model (Model &&)=default
	Model (const String &model, const String &config="")
	Create model from deep learning network represented in one of the supported formats. An order of model and config arguments does not matter. More...
	Model (const Net &network)
	Create model from deep learning network. More...
Impl *	getImpl () const
Impl &	getImplRef () const
Net &	getNetwork_ () const
Net &	getNetwork_ ()
	operator Net & () const
Model &	operator= (const Model &)=default
Model &	operator= (Model &&)=default
void	predict (InputArray frame, OutputArrayOfArrays outs) const
	Given the input frame, create input blob, run net and return the output blobs. More...
Model &	setInputCrop (bool crop)
	Set flag crop for frame. More...
Model &	setInputMean (const Scalar &mean)
	Set mean value for frame. More...
void	setInputParams (double scale=1.0, const Size &size=Size(), const Scalar &mean=Scalar(), bool swapRB=false, bool crop=false)
	Set preprocessing parameters for frame. More...
Model &	setInputScale (double scale)
	Set scalefactor value for frame. More...
Model &	setInputSize (const Size &size)
	Set input size for frame. More...
Model &	setInputSize (int width, int height)
Model &	setInputSwapRB (bool swapRB)
	Set flag swapRB for frame. More...
Model &	setPreferableBackend (dnn::Backend backendId)
Model &	setPreferableTarget (dnn::Target targetId)

Protected Attributes
Ptr< Impl >	impl

Detailed Description

This class is presented high-level API for neural networks.

Model allows to set params for preprocessing input image. Model creates net from file with trained weights and config, sets preprocessing input and runs forward pass.

Constructor & Destructor Documentation

Model() [1/5]

cv::dnn::Model::Model

(

)

Python:
	<dnn_Model object>	=	cv.dnn_Model(	model[, config]	)
	<dnn_Model object>	=	cv.dnn_Model(	network	)

Model() [2/5]

cv::dnn::Model::Model ( const Model &  )

default

Python:
	<dnn_Model object>	=	cv.dnn_Model(	model[, config]	)
	<dnn_Model object>	=	cv.dnn_Model(	network	)

Model() [3/5]

cv::dnn::Model::Model ( Model &&  )

default

Python:
	<dnn_Model object>	=	cv.dnn_Model(	model[, config]	)
	<dnn_Model object>	=	cv.dnn_Model(	network	)

Model() [4/5]

cv::dnn::Model::Model	(	const String &	model,
		const String &	config = ""
	)

Python:
	<dnn_Model object>	=	cv.dnn_Model(	model[, config]	)
	<dnn_Model object>	=	cv.dnn_Model(	network	)

Create model from deep learning network represented in one of the supported formats. An order of model and config arguments does not matter.

Parameters

[in]	model	Binary file contains trained weights.
[in]	config	Text file contains network configuration.

Model() [5/5]

cv::dnn::Model::Model

(

const Net &

network

)

Python:
	<dnn_Model object>	=	cv.dnn_Model(	model[, config]	)
	<dnn_Model object>	=	cv.dnn_Model(	network	)

Create model from deep learning network.

Parameters

[in]

network

Net object.

Member Function Documentation

getImpl()

Impl* cv::dnn::Model::getImpl ( ) const

inline

getImplRef()

Impl& cv::dnn::Model::getImplRef ( ) const

inline

getNetwork_() [1/2]

Net& cv::dnn::Model::getNetwork_

(

)

const

getNetwork_() [2/2]

Net& cv::dnn::Model::getNetwork_ ( )

inline

operator Net &()

cv::dnn::Model::operator Net & ( ) const

inline

operator=() [1/2]

Model& cv::dnn::Model::operator= ( const Model &  )

default

operator=() [2/2]

Model& cv::dnn::Model::operator= ( Model &&  )

default

predict()

void cv::dnn::Model::predict	(	InputArray	frame,
		OutputArrayOfArrays	outs
	)		const

Python:
	outs	=	cv.dnn_Model.predict(	frame[, outs]	)

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

Parameters

[in]	frame	The input image.
[out]	outs	Allocated output blobs, which will store results of the computation.

setInputCrop()

Model& cv::dnn::Model::setInputCrop

(

bool

crop

)

Python:
	retval	=	cv.dnn_Model.setInputCrop(	crop	)

Set flag crop for frame.

Parameters

[in]

crop

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

setInputMean()

Model& cv::dnn::Model::setInputMean

(

const Scalar &

mean

)

Python:
	retval	=	cv.dnn_Model.setInputMean(	mean	)

Set mean value for frame.

Parameters

[in]

mean

Scalar with mean values which are subtracted from channels.

setInputParams()

void cv::dnn::Model::setInputParams	(	double	scale = 1.0,
		const Size &	size = Size(),
		const Scalar &	mean = Scalar(),
		bool	swapRB = false,
		bool	crop = false
	)

Python:
	None	=	cv.dnn_Model.setInputParams(	[, scale[, size[, mean[, swapRB[, crop]]]]]	)

Set preprocessing parameters for frame.

Parameters

[in]	size	New input size.
[in]	mean	Scalar with mean values which are subtracted from channels.
[in]	scale	Multiplier for frame values.
[in]	swapRB	Flag which indicates that swap first and last channels.
[in]	crop	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) )

setInputScale()

Model& cv::dnn::Model::setInputScale

(

double

scale

)

Python:
	retval	=	cv.dnn_Model.setInputScale(	scale	)

Set scalefactor value for frame.

Parameters

[in]

scale

Multiplier for frame values.

setInputSize() [1/2]

Model& cv::dnn::Model::setInputSize

(

const Size &

size

)

Python:
	retval	=	cv.dnn_Model.setInputSize(	size	)
	retval	=	cv.dnn_Model.setInputSize(	width, height	)

Set input size for frame.

Parameters

[in]

size

New input size.

Note

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

setInputSize() [2/2]

Model& cv::dnn::Model::setInputSize ( int  width, int  height  )

inline

Python:
	retval	=	cv.dnn_Model.setInputSize(	size	)
	retval	=	cv.dnn_Model.setInputSize(	width, height	)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters

[in]	width	New input width.
[in]	height	New input height.

setInputSwapRB()

Model& cv::dnn::Model::setInputSwapRB

(

bool

swapRB

)

Python:
	retval	=	cv.dnn_Model.setInputSwapRB(	swapRB	)

Set flag swapRB for frame.

Parameters

[in]

swapRB

Flag which indicates that swap first and last channels.

setPreferableBackend()

Model& cv::dnn::Model::setPreferableBackend

(

dnn::Backend

backendId

)

Python:
	retval	=	cv.dnn_Model.setPreferableBackend(	backendId	)

See also

Net::setPreferableBackend

setPreferableTarget()

Model& cv::dnn::Model::setPreferableTarget

(

dnn::Target

targetId

)

Python:
	retval	=	cv.dnn_Model.setPreferableTarget(	targetId	)

See also

Net::setPreferableTarget

Member Data Documentation

impl

Ptr<Impl> cv::dnn::Model::impl

protected

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The documentation for this class was generated from the following file:

• opencv2/dnn/dnn.hpp