Classes and utilities to provide abstraction to deep neural networks. Provides interfacing to OpenCV backends (CPU, OpenCL), tensor processing units (TPU) such as Coral Edge TPU and neural processing units (NPU) such as Amlogic A311D NPU. Supported on JeVois-Pro only.

Collaboration diagram for Tensor/Neural Processing networks:

Classes
class	jevois::dnn::Network
	Abstract class to represent a neural network. More...

class	jevois::dnn::NetworkOpenCV
	Wrapper around an OpenCV DNN neural network. More...

class	jevois::dnn::NetworkTPU
	Wrapper around a Coral TPU neural network. More...

class	jevois::dnn::Pipeline
	Neural processing pipeline. More...

class	jevois::dnn::PostProcessor
	Post-Processor for neural network pipeline. More...

class	jevois::dnn::PostProcessorClassify
	Post-Processor for neural network pipeline. More...

class	jevois::dnn::PostProcessorDetect
	Post-Processor for neural network pipeline. More...

class	jevois::dnn::PostProcessorSegment
	Post-Processor for neural network pipeline. More...

class	jevois::dnn::PreProcessor
	Pre-Processor for neural network pipeline. More...

class	jevois::dnn::PreProcessorBlob
	Pre-Processor for neural network pipeline. More...

Functions
std::map< int, std::string >	jevois::dnn::readLabelsFile (std::string const &fname)
	Read a label file. More...

std::string	jevois::dnn::getLabel (std::map< int, std::string > const &labels, int id)
	Get a label from an id. More...

int	jevois::dnn::stringToRGBA (std::string const &label, unsigned char alpha=128)
	Compute a color from a label name. More...

void	jevois::dnn::topK (float const pfProb, float pfMaxProb, uint32_t *pMaxClass, uint32_t outputCount, uint32_t topNum)
	Get top-k entries and their indices. More...

std::string	jevois::dnn::shapestr (cv::Mat const &m)
	Get a string of the form: "nD AxBxC... TYPE" from an n-dimensional cv::Mat with data type TYPE. More...

std::string	jevois::dnn::shapestr (TfLiteTensor const *t)
	Get a string of the form: "nD AxBxC... TYPE" from an n-dimensional TfLiteTensor with data type TYPE. More...

std::string	jevois::dnn::shapestr (vsi_nn_tensor_attr_t const &attr)
	Get a string of the form: "nD AxBxC... TYPE" from an n-dimensional NPU tensor with data type TYPE. More...

std::vector< size_t >	jevois::dnn::strshape (std::string const &str)
	Get a vector of size_t from a string containing AxBxC... More...

int	jevois::dnn::tf2cv (TfLiteType t)
	Convert from TensorFlow data type to OpenCV. More...

vsi_nn_type_e	jevois::dnn::tf2vsi (TfLiteType t)
	Convert from TensorFlow data type to vsi_nn. More...

int	jevois::dnn::vsi2cv (vsi_nn_type_e t)
	Convert from NPU data type to OpenCV. More...

void	jevois::dnn::clamp (cv::Rect &r, int width, int height)
	Clamp a rectangle to within given image width and height. More...

std::vector< vsi_nn_tensor_attr_t >	jevois::dnn::parseTensorSpecs (std::string const &specs)
	Parse tensor specification. More...

cv::Size	jevois::dnn::attrsize (vsi_nn_tensor_attr_t const &attr)
	Get a tensor's size in cv::Size format. More...

std::string	jevois::dnn::attrstr (vsi_nn_tensor_attr_t const &attr)
	Get a string describing the specs of a tensor. More...

vsi_nn_tensor_attr_t	jevois::dnn::tensorattr (TfLiteTensor const *t)
	Get tensor shape and type attributes for a TensorFlow Lite tensor. More...

void	jevois::dnn::softmax (float const input, size_t n, float fac, float output)
	Apply softmax to a float vector. More...