G-API Data Types

G-API data objects used to build G-API expressions. View details

Topics

• G-API Metadata Descriptors

Detailed Description

G-API data objects used to build G-API expressions.

These objects do not own any particular data (except compile-time associated values like with cv::GScalar or cv::GArray<T>) and are used only to construct graphs.

Every graph in G-API starts and ends with data objects.

Once constructed and compiled, G-API operates with regular host-side data instead. Refer to the below table to find the mapping between G-API and regular data types when passing input and output data structures to G-API:

G-API data type	I/O data type
cv::GMat	cv::Mat, cv::UMat, cv::RMat
cv::GScalar	cv::Scalar
cv::GArray<T>	std::vector
cv::GOpaque<T>	T
cv::GFrame	cv::MediaFrame

Classes

Name	Description
class cv::GArray< typename T >	cv::GArray template class represents a list of objects of class T in the graph. View details
class cv::GFrame	GFrame class represents an image or media frame in the graph. View details
class cv::GMat	GMat class represents image or tensor data in the graph. View details
class cv::GMatP	View details
class cv::GOpaque< typename T >	cv::GOpaque template class represents an object of class T in the graph. View details
class cv::GScalar	GScalar class represents cv::Scalar data in the graph. View details