G-API: GAPI_TRANSFORM internal functionality rework (#14952)
* Change internal pattern and substitute signatures and refactor tests
* Enhance GArrayU with type-checker function
Add a couple of new tests on GAPI_TRANSFORM
* Added support for the ONNX "ReduceMean" Layer. (as this is the same as the GlobalAveragePool)
* Add ReduceMean test
* Fix ONNX importer
* Fix ReduceMean
* Add assert
* Split test
* Fix split test
G-API: clean up accuracy tests (#14945)
* Delete createOutputMatrices flag
Update the way compile args function is created
Fix instantiation suffix print function
* Update comment (NB)
* Make printable comparison functions
* Use defines instead of objects for compile args
* Remove custom printers, use operator<< overload
* Remove SAME_TYPE and use -1 instead
* Delete createOutputMatrices flag in new tests
* Fix GetParam() printed values
* Update Resize tests: use CompareF object
* Address code review feedback
* Add default cases for operator<< overloads
* change throw to GAPI_Assert
G-API: Add output allocation tests for backends (#15012)
* Add output tests for backends
* Fix large size test: output is in fact reallocated
* Use cv::Mat copies for reallocation tracking
* Separate LargeSizeWithCorrectSubmatrix test
* Rename backed output allocation tests
* Address code review feedback
Update test names
Add illustrative "expect (non-)empty" checks
Rename mat "copy" to mat reference
Add more pointer checks
* Add illustrative checks
- Added new graph compile time argument to specify multiple independent
ROIs (Tiles)
- Added new "executable" with serial loop other user specified
ROIs(Tiles)
- refactored graph traversal code into separate function to be called
once
- added saturate cast to Fluid AddCsimple test kernel
G-API planar kernels (#14917)
* Added resizeP with tests
* NV12 planar filters
* fix warnings in ResizeP test
* fix out mat ocv warning
* sz_on - > sz rename
* cpu tests new signature
* try to fix resizeP test
* trailing spaces remove
* doxygen doc fixed
* doxygen minor fix
* more doxygen fixes
* Doxygen corrected and extended after review.