OpenCV  4.5.5-dev
Open Source Computer Vision
Modules | Classes
G-API Data Types

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

Modules

 G-API Metadata Descriptors
 

Classes

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

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<T>
cv::GOpaque<T> T
cv::GFrame cv::MediaFrame