Struct opencv::gapi::GMat

pub struct GMat { /* private fields */ }

\addtogroup gapi_data_objects

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
/

GMat class represents image or tensor data in the graph.

GMat doesn’t store any data itself, instead it describes a functional relationship between operations consuming and producing GMat objects.

GMat is a virtual counterpart of Mat and UMat, but it doesn’t mean G-API use Mat or UMat objects internally to represent GMat objects – the internal data representation may be backend-specific or optimized out at all.

See also

Mat, GMatDesc

Implementations

impl GMat

pub fn default() -> Result<GMat>

Constructs an empty GMat

Normally, empty G-API data objects denote a starting point of the graph. When an empty GMat is assigned to a result of some operation, it obtains a functional link to this operation (and is not empty anymore).

Trait Implementations

impl Boxed for GMat

unsafe fn from_raw(ptr: *mut c_void) -> Self

Wrap the specified raw pointer

fn into_raw(self) -> *mut c_void

Return an the underlying raw pointer while consuming this wrapper.

fn as_raw(&self) -> *const c_void

Return the underlying raw pointer.

fn as_raw_mut(&mut self) -> *mut c_void

Return the underlying mutable raw pointer

impl Clone for GMat

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GMat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for GMat

fn drop(&mut self)

Executes the destructor for this type.

impl From<GMatP> for GMat

fn from(s: GMatP) -> Self

Converts to this type from the input type.

impl GMatTrait for GMat

fn as_raw_mut_GMat(&mut self) -> *mut c_void

impl GMatTraitConst for GMat

fn as_raw_GMat(&self) -> *const c_void

impl Send for GMat

impl VectorElement for GMatwhere Vector<GMat>: VectorExtern<GMat>,