Add operators support for Ascend NPU (CANN backend) (#3552)

CANN (Compute Architecture of Neural Networks), developped by Huawei, is
a heterogeneous computing architecture for AI. Opencv DNN has already
suppoted CANN backend [#22634](opencv/opencv#22634).

There are more and more users using [Ascend NPU](https://www.hiascend.com/)
and programming with CANN, and the number is still growing rapidly.
AI training and inference are inseparable from data preprocessing.
When users use OpenCV to work with CANN backend, data preprocessing can
only run on CPUs, resulting in inefficiency.

The purpose of this commit is to enable OpenCV operators on CANN backend.

The usage of CANN backend is consistent, Please refer to OpenCV DNN: [CANN backend manual]
(https://gist.github.com/fengyuentau/083f7f339592545c1f1d2c1fde6a53dc#file-a_ocv_cann-md):
1. [Install dependencies]
   (https://gist.github.com/fengyuentau/083f7f339592545c1f1d2c1fde6a53dc#install-dependencies)
2. [Install CANN]
   (https://gist.github.com/fengyuentau/083f7f339592545c1f1d2c1fde6a53dc#install-cann)
3. [Compile OpenCV with CANN]
   (https://gist.github.com/fengyuentau/083f7f339592545c1f1d2c1fde6a53dc#build-opencv-with-cann)

The CANN backend is used in a similar way to CUDA:
| Object    | CANN         | CUDA     |
| --------- | ------------ | -------- |
| Namespace | cv::cann     | cv::cuda |
| Matrix    | AscendMat    | GpuMat   |
| Stream    | AscendStream | Stream   |
| Event     | AscendEvent  | Event    |

The current commit provides CANN backend operator support framework, In
order to make code viewing easy, only a few basic interfaces are
implemented, all of the following operators are tested and compared
result with CPU backend.

More operators will continue implement in new independent commits.

Co-authored-by: CaoMengqing <cmq0113@163.com>

.github/workflows/PR-4.x.yaml

@@ -29,3 +29,7 @@ jobs:
 
   Linux-RISC-V-Clang:
     uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-4.x-RISCV.yaml@main
+
+  openEuler2203-x64:
+    if: "${{ contains(github.event.pull_request.labels.*.name, 'category: cann') }}"
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-Contrib-PR-4.x-O22-CANN.yaml@main

modules/cannops/CMakeLists.txt

@@ -0,0 +1,17 @@
+ if(IOS OR WINRT OR ANDROID OR APPLE OR WIN32 OR (NOT HAVE_CANN))
+   ocv_module_disable(cannops)
+ endif()
+
+set(the_description "Ascend-accelerated Operations on Matrices")
+
+ocv_add_module(cannops opencv_core WRAP python)
+ocv_module_include_directories(${CANN_INCLUDE_DIRS})
+ocv_glob_module_sources()
+ocv_install_used_external_targets(${CANN_LIBRARIES})
+ocv_create_module(${CANN_LIBRARIES})
+
+ocv_include_directories(${CMAKE_SOURCE_DIR}/modules/ts/include)
+
+ocv_add_accuracy_tests(DEPENDS_ON opencv_cannops)
+ocv_add_perf_tests(DEPENDS_ON opencv_cannops)
+ocv_add_samples(opencv_cannops)

modules/cannops/Dockerfile

@@ -0,0 +1,67 @@
+# User guides
+#
+# 0. Install Ascend driver on host.
+#    (https://www.hiascend.com/en/hardware/firmware-drivers)
+#
+# 1. Run docker container.
+# docker run -it \
+#    --name opencv \
+#    --device /dev/davinci0 \
+#    --device /dev/davinci_manager \
+#    --device /dev/devmm_svm \
+#    --device /dev/hisi_hdc \
+#    -v /usr/local/dcmi:/usr/local/dcmi \
+#    -v /usr/local/bin/npu-smi:/usr/local/bin/npu-smi \
+#    -v /usr/local/Ascend/driver/lib64/:/usr/local/Ascend/driver/lib64/ \
+#    opencv bash
+#
+# 2. Check environment.
+# npu-smi info
+#
+# 3. Compile opencv with Ascend NPU backend.
+# cmake -DWITH_CANN=1
+#
+# 4. Run opencv_test_cannops.
+# ./bin/opencv_test_cannops
+
+FROM openeuler/openeuler:22.03-lts-sp2
+
+RUN yum install -y \
+    git \
+    wget \
+    gcc \
+    g++ \
+    cmake \
+    make \
+    python-pip \
+    python3-devel
+
+RUN pip install -i https://pypi.tuna.tsinghua.edu.cn/simple \
+    numpy \
+    sympy \
+    decorator \
+    scipy \
+    attrs \
+    psutil
+
+# Install CANN
+RUN wget https://ascend-repo.obs.cn-east-2.myhuaweicloud.com/CANN/CANN%207.0.RC1/Ascend-cann-toolkit_7.0.RC1_linux-"$(uname -i)".run && \
+    chmod +x Ascend-cann-toolkit_7.0.RC1_linux-"$(uname -i)".run && \
+    ./Ascend-cann-toolkit_7.0.RC1_linux-"$(uname -i)".run --quiet --install && \
+    rm -f ./Ascend-cann-toolkit_7.0.RC1_linux-"$(uname -i)".run
+
+# Install kernel
+RUN wget https://ascend-repo.obs.cn-east-2.myhuaweicloud.com/CANN/CANN%207.0.RC1/Ascend-cann-kernels-310p_7.0.RC1_linux.run && \
+    chmod +x Ascend-cann-kernels-310p_7.0.RC1_linux.run && \
+    ./Ascend-cann-kernels-310p_7.0.RC1_linux.run --quiet --install && \
+    rm -f ./Ascend-cann-kernels-310p_7.0.RC1_linux.run
+
+ENV LD_LIBRARY_PATH=/usr/local/Ascend/driver/lib64:/usr/local/Ascend/driver/lib64/common:/usr/local/Ascend/driver/lib64/driver:$LD_LIBRARY_PATH:/usr/lib64
+ENV ASCEND_TOOLKIT_HOME=/usr/local/Ascend/ascend-toolkit/latest
+ENV LD_LIBRARY_PATH=${ASCEND_TOOLKIT_HOME}/lib64:${ASCEND_TOOLKIT_HOME}/lib64/plugin/opskernel:${ASCEND_TOOLKIT_HOME}/lib64/plugin/nnengine:${ASCEND_TOOLKIT_HOME}/opp/built-in/op_impl/ai_core/tbe/op_tiling:$LD_LIBRARY_PATH
+ENV PYTHONPATH=${ASCEND_TOOLKIT_HOME}/python/site-packages:${ASCEND_TOOLKIT_HOME}/opp/built-in/op_impl/ai_core/tbe:$PYTHONPATH
+ENV PATH=${ASCEND_TOOLKIT_HOME}/bin:${ASCEND_TOOLKIT_HOME}/compiler/ccec_compiler/bin:$PATH
+ENV ASCEND_AICPU_PATH=${ASCEND_TOOLKIT_HOME}
+ENV ASCEND_OPP_PATH=${ASCEND_TOOLKIT_HOME}/opp
+ENV TOOLCHAIN_HOME=${ASCEND_TOOLKIT_HOME}/toolkit
+ENV ASCEND_HOME_PATH=${ASCEND_TOOLKIT_HOME}