print a debug message if the environment variables OPENCV_FFMPEG_CAPTURE_OPTIONS and OPENCV_FFMPEG_WRITER_OPTIONS are set

OAK Information

Add warpAffine IPPIW implementation to replace with old version

G-API: Add synchronous execution for IE backend

Add python bindings for G-API onnx

Signed-off-by: Nrobin <bin.wang@intel.com>

G-API: API for configuring model output precision for IE backend

[G-API] Pipeline modeling tool - expand performance report

DNN: Let Slice layer support non-sequential and negative axes

Enable issue template chooser

* cmake: Fix DirectX detection in mingw

The pragma comment directive is valid for MSVC only. So, the DirectX detection
fails in mingw. The failure is fixed by adding the required linking library
(here d3d11) in the try_compile() function in OpenCVDetectDirectX.cmake file.
Also add a message if the first DirectX check fails.

* gapi: Fix compilation with mingw

These changes remove MSVC specific pragma directive. The compilation fails at
linking time due to absence of proper linking library. The required libraries
are added in corresponding CMakeLists.txt file.

* samples: Fix compilation with mingw

These changes remove MSVC specific pragma directive. The compilation fails at
linking time due to absence of proper linking library. The required libraries
are added in corresponding CMakeLists.txt file.

request and documentation

refactor the code for parsing Slice layer
add test for Slice layer
let 'begin' and 'end' resize to dims
add opset message comment

fix warnings in ImageCollection

Add StackBlur for imgproc

Fixed most clang -Wextra-semi warnings

DNN: Remove unused code in onnx_importer.cpp

QRcode, change INTER_LINEAR to INTER_LINEAR_EXACT

fix python test_detect_and_decode_multi, sort QR in multiDetect/multiDecode
enable tests with "version_5_up.jpg", "version_5_top.jpg"

Fix multiple sdtlib linkage warning on Windows with MSVS.

OpenCV for OpenVINO documentation