diff --git a/.circleci/scripts/get_mmcv_var.sh b/.circleci/scripts/get_mmcv_var.sh
deleted file mode 100755
index 552ff871..00000000
--- a/.circleci/scripts/get_mmcv_var.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-
-TORCH=$1
-CUDA=$2
-
-# 10.2 -> cu102
-MMCV_CUDA="cu`echo ${CUDA} | tr -d '.'`"
-
-# MMCV only provides pre-compiled packages for torch 1.x.0
-# which works for any subversions of torch 1.x.
-# We force the torch version to be 1.x.0 to ease package searching
-# and avoid unnecessary rebuild during MMCV's installation.
-TORCH_VER_ARR=(${TORCH//./ })
-TORCH_VER_ARR[2]=0
-printf -v MMCV_TORCH "%s." "${TORCH_VER_ARR[@]}"
-MMCV_TORCH=${MMCV_TORCH%?}  # Remove the last dot
-
-echo "export MMCV_CUDA=${MMCV_CUDA}" >> $BASH_ENV
-echo "export MMCV_TORCH=${MMCV_TORCH}" >> $BASH_ENV
diff --git a/.circleci/test.yml b/.circleci/test.yml
index e9dd2453..8b7c2a7f 100644
--- a/.circleci/test.yml
+++ b/.circleci/test.yml
@@ -36,8 +36,6 @@ jobs:
         type: string
       torchvision:
         type: string
-      mmcv:
-        type: string
     docker:
       - image: cimg/python:<< parameters.python >>
     resource_class: large
@@ -51,30 +49,31 @@ jobs:
       - run:
           name: Configure Python & pip
           command: |
-            python -m pip install --upgrade pip
-            python -m pip install wheel
+            pip install --upgrade pip
+            pip install wheel
       - run:
           name: Install PyTorch
           command: |
             python -V
-            python -m pip install torch==<< parameters.torch >>+cpu torchvision==<< parameters.torchvision >>+cpu -f https://download.pytorch.org/whl/torch_stable.html
+            pip install torch==<< parameters.torch >>+cpu torchvision==<< parameters.torchvision >>+cpu -f https://download.pytorch.org/whl/torch_stable.html
       - run:
           name: Install mmocr dependencies
           command: |
-            python -m pip install git+ssh://git@github.com/open-mmlab/mmengine.git@main
-            python -m pip install << parameters.mmcv >>
-            python -m pip install git+ssh://git@github.com/open-mmlab/mmdetection.git@dev-3.x
-            python -m pip install -r requirements.txt
+            pip install git+https://github.com/open-mmlab/mmengine.git@main
+            pip install -U openmim
+            mim install 'mmcv >= 2.0.0rc1'
+            pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+            pip install -r requirements/tests.txt
       - run:
           name: Build and install
           command: |
-            python -m pip install -e .
+            pip install -e .
       - run:
           name: Run unittests
           command: |
-            python -m coverage run --branch --source mmocr -m pytest tests/
-            python -m coverage xml
-            python -m coverage report -m
+            coverage run --branch --source mmocr -m pytest tests/
+            coverage xml
+            coverage report -m
   build_cuda:
     parameters:
       torch:
@@ -85,8 +84,6 @@ jobs:
       cudnn:
         type: integer
         default: 7
-      mmcv:
-        type: string
     machine:
       image: ubuntu-2004-cuda-11.4:202110-01
       # docker_layer_caching: true
@@ -97,8 +94,8 @@ jobs:
           # Cloning repos in VM since Docker doesn't have access to the private key
           name: Clone Repos
           command: |
-            git clone -b main --depth 1 ssh://git@github.com/open-mmlab/mmengine.git /home/circleci/mmengine
-            git clone -b dev-3.x --depth 1 ssh://git@github.com/open-mmlab/mmdetection.git /home/circleci/mmdetection
+            git clone -b main --depth 1 https://github.com/open-mmlab/mmengine.git /home/circleci/mmengine
+            git clone -b dev-3.x --depth 1 https://github.com/open-mmlab/mmdetection.git /home/circleci/mmdetection
       - run:
           name: Build Docker image
           command: |
@@ -108,9 +105,10 @@ jobs:
           name: Install mmocr dependencies
           command: |
             docker exec mmocr pip install -e /mmengine
-            docker exec mmocr pip install << parameters.mmcv >>
+            docker exec mmocr pip install -U openmim
+            docker exec mmocr mim install 'mmcv >= 2.0.0rc1'
             docker exec mmocr pip install -e /mmdetection
-            docker exec mmocr pip install -r requirements.txt
+            docker exec mmocr pip install -r requirements/tests.txt
       - run:
           name: Build and install
           command: |
@@ -118,7 +116,8 @@ jobs:
       - run:
           name: Run unittests
           command: |
-            docker exec mmocr python -m pytest tests/
+            docker exec mmocr pytest tests/
+
 workflows:
   pr_stage_lint:
     when: << pipeline.parameters.lint_only >>
@@ -129,7 +128,7 @@ workflows:
             branches:
               ignore:
                 - dev-1.x
-                - test-1.x
+                - 1.x
   pr_stage_test:
     when:
       not:
@@ -142,42 +141,18 @@ workflows:
               ignore:
                 - dev-1.x
                 - test-1.x
-  merge_stage_test:
-    when:
-      not:
-        << pipeline.parameters.lint_only >>
-    jobs:
-      - build_cuda:
-          name: minimum_version_gpu
-          torch: 1.6.0
-          # Use double quotation mark to explicitly specify its type
-          # as string instead of number
-          mmcv: https://download.openmmlab.com/mmcv/dev-2.x/cu101/torch1.6.0/mmcv_full-2.0.0rc0-cp37-cp37m-manylinux1_x86_64.whl
-          cuda: "10.1"
-          filters:
-            branches:
-              only:
-                - dev-1.x
-                - test-1.x
       - build_cpu:
           name: minimum_version_cpu
           torch: 1.6.0
           torchvision: 0.7.0
           python: 3.6.9  # The lowest python 3.6.x version available on CircleCI images
-          mmcv: https://download.openmmlab.com/mmcv/dev-2.x/cpu/torch1.6.0/mmcv_full-2.0.0rc0-cp36-cp36m-manylinux1_x86_64.whl
-          # requires:
-          #   - lint
-          filters:
-            branches:
-              only:
-                - dev-1.x
-                - test-1.x
+          requires:
+            - lint
       - build_cpu:
           name: maximum_version_cpu
-          torch: 1.9.0
-          torchvision: 0.10.0
+          torch: 1.12.1
+          torchvision: 0.13.1
           python: 3.9.0
-          mmcv: https://download.openmmlab.com/mmcv/dev-2.x/cpu/torch1.9.0/mmcv_full-2.0.0rc0-cp39-cp39-manylinux1_x86_64.whl
           requires:
             - minimum_version_cpu
       - hold:
@@ -190,6 +165,20 @@ workflows:
           # Use double quotation mark to explicitly specify its type
           # as string instead of number
           cuda: "10.2"
-          mmcv: https://download.openmmlab.com/mmcv/dev-2.x/cu102/torch1.8.0/mmcv_full-2.0.0rc0-cp37-cp37m-manylinux1_x86_64.whl
           requires:
             - hold
+  merge_stage_test:
+    when:
+      not:
+        << pipeline.parameters.lint_only >>
+    jobs:
+      - build_cuda:
+          name: minimum_version_gpu
+          torch: 1.6.0
+          # Use double quotation mark to explicitly specify its type
+          # as string instead of number
+          cuda: "10.1"
+          filters:
+            branches:
+              only:
+                - dev-1.x
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 9d836594..e9cdba66 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,22 +6,22 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-# jobs:
-#   lint:
-#     runs-on: ubuntu-latest
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python 3.7
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: 3.7
-#       - name: Install pre-commit hook
-#         run: |
-#           pip install pre-commit
-#           pre-commit install
-#       - name: Linting
-#         run: pre-commit run --all-files
-#       - name: Check docstring coverage
-#         run: |
-#           pip install interrogate
-#           interrogate -v --ignore-init-method --ignore-module --ignore-nested-functions --ignore-regex "__repr__" --fail-under 50 mmocr
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+      - name: Install pre-commit hook
+        run: |
+          pip install pre-commit
+          pre-commit install
+      - name: Linting
+        run: pre-commit run --all-files
+      - name: Check docstring coverage
+        run: |
+          pip install interrogate
+          interrogate -v --ignore-init-method --ignore-module --ignore-nested-functions --ignore-regex "__repr__" --fail-under 90 mmocr
diff --git a/.github/workflows/merge_stage_test.yml b/.github/workflows/merge_stage_test.yml
index e3522e3e..cf0051e6 100644
--- a/.github/workflows/merge_stage_test.yml
+++ b/.github/workflows/merge_stage_test.yml
@@ -16,169 +16,174 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-# jobs:
-#   build_cpu_py:
-#     runs-on: ubuntu-18.04
-#     strategy:
-#       matrix:
-#         python-version: [3.6, 3.8, 3.9]
-#         torch: [1.8.1]
-#         include:
-#           - torch: 1.8.1
-#             torchvision: 0.9.1
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Get MMCV_TORCH as the environment variable
-#         run: . .github/workflows/scripts/get_mmcv_var.sh ${{matrix.torch}}
-#         shell: bash
-#       - name: Upgrade pip
-#         run: pip install pip --upgrade
-#       - name: Install PyTorch
-#         run: pip install torch==${{matrix.torch}}+cpu torchvision==${{matrix.torchvision}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
-#       - name: Install MMCV
-#         run: pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cpu/torch${MMCV_TORCH}/index.html
-#       - name: Install MMDet
-#         run: pip install mmdet
-#       - name: Install other dependencies
-#         run: pip install -r requirements.txt
-#       - name: Build and install
-#         run: rm -rf .eggs && pip install -e .
-#       - name: Run unittests and generate coverage report
-#         run: |
-#           coverage run --branch --source mmocr -m pytest tests/
-#           coverage xml
-#           coverage report -m
+jobs:
+  build_cpu_py:
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        python-version: [3.6, 3.8, 3.9]
+        torch: [1.8.1]
+        include:
+          - torch: 1.8.1
+            torchvision: 0.9.1
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Install PyTorch
+        run: pip install torch==${{matrix.torch}}+cpu torchvision==${{matrix.torchvision}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
+      - name: Install MMEngine
+        run: pip install git+https://github.com/open-mmlab/mmengine.git@main
+      - name: Install MMCV
+        run: |
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+      - name: Install MMDet
+        run: pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+      - name: Install other dependencies
+        run: pip install -r requirements/tests.txt
+      - name: Build and install
+        run: rm -rf .eggs && pip install -e .
+      - name: Run unittests and generate coverage report
+        run: |
+          coverage run --branch --source mmocr -m pytest tests/
+          coverage xml
+          coverage report -m
 
-#   build_cpu_pt:
-#     runs-on: ubuntu-18.04
-#     strategy:
-#       matrix:
-#         python-version: [3.7]
-#         torch: [1.5.1, 1.6.0, 1.7.1, 1.8.1, 1.9.1, 1.10.1, 1.11.0]
-#         include:
-#           - torch: 1.5.1
-#             torchvision: 0.6.1
-#           - torch: 1.6.0
-#             torchvision: 0.7.0
-#           - torch: 1.7.1
-#             torchvision: 0.8.2
-#           - torch: 1.8.1
-#             torchvision: 0.9.1
-#           - torch: 1.9.1
-#             torchvision: 0.10.1
-#           - torch: 1.10.1
-#             torchvision: 0.11.2
-#           - torch: 1.11.0
-#             torchvision: 0.12.0
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Upgrade pip
-#         run: pip install pip --upgrade
-#       - name: Get MMCV_TORCH as the environment variable
-#         run: . .github/workflows/scripts/get_mmcv_var.sh ${{matrix.torch}}
-#         shell: bash
-#       - name: Install PyTorch
-#         run: pip install torch==${{matrix.torch}}+cpu torchvision==${{matrix.torchvision}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
-#       - name: Install MMCV
-#         run: pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cpu/torch${MMCV_TORCH}/index.html
-#       - name: Install MMDet
-#         run: pip install mmdet
-#       - name: Install other dependencies
-#         run: pip install -r requirements.txt
-#       - name: Build and install
-#         run: rm -rf .eggs && pip install -e .
-#       - name: Run unittests and generate coverage report
-#         run: |
-#           coverage run --branch --source mmocr -m pytest tests/
-#           coverage xml
-#           coverage report -m
-#       # Only upload coverage report for python3.7 && pytorch1.8.1 cpu
-#       - name: Upload coverage to Codecov
-#         if: ${{matrix.torch == '1.8.1' && matrix.python-version == '3.7'}}
-#         uses: codecov/codecov-action@v1.0.14
-#         with:
-#           file: ./coverage.xml
-#           flags: unittests
-#           env_vars: OS,PYTHON
-#           name: codecov-umbrella
-#           fail_ci_if_error: false
+  build_cpu_pt:
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        python-version: [3.7]
+        torch: [1.6.0, 1.7.1, 1.8.1, 1.9.1, 1.10.1, 1.11.0, 1.12.1]
+        include:
+          - torch: 1.5.1
+            torchvision: 0.6.1
+          - torch: 1.6.0
+            torchvision: 0.7.0
+          - torch: 1.7.1
+            torchvision: 0.8.2
+          - torch: 1.8.1
+            torchvision: 0.9.1
+          - torch: 1.9.1
+            torchvision: 0.10.1
+          - torch: 1.10.1
+            torchvision: 0.11.2
+          - torch: 1.11.0
+            torchvision: 0.12.0
+          - torch: 1.12.1
+            torchvision: 0.13.1
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Install PyTorch
+        run: pip install torch==${{matrix.torch}}+cpu torchvision==${{matrix.torchvision}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
+      - name: Install MMEngine
+        run: pip install git+https://github.com/open-mmlab/mmengine.git@main
+      - name: Install MMCV
+        run: |
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+      - name: Install MMDet
+        run: pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+      - name: Install other dependencies
+        run: pip install -r requirements/tests.txt
+      - name: Build and install
+        run: rm -rf .eggs && pip install -e .
+      - name: Run unittests and generate coverage report
+        run: |
+          coverage run --branch --source mmocr -m pytest tests/
+          coverage xml
+          coverage report -m
+      # Only upload coverage report for python3.7 && pytorch1.8.1 cpu
+      - name: Upload coverage to Codecov
+        if: ${{matrix.torch == '1.8.1' && matrix.python-version == '3.7'}}
+        uses: codecov/codecov-action@v1.0.14
+        with:
+          file: ./coverage.xml
+          flags: unittests
+          env_vars: OS,PYTHON
+          name: codecov-umbrella
+          fail_ci_if_error: false
 
-#   build_cu102:
-#     runs-on: ubuntu-18.04
-#     container:
-#       image: pytorch/pytorch:1.8.1-cuda10.2-cudnn7-devel
-#     strategy:
-#       matrix:
-#         python-version: [3.7]
-#         include:
-#           - torch: 1.8.1
-#             cuda: 10.2
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Upgrade pip
-#         run: python -m pip install pip --upgrade
-#       - name: Fetch GPG keys
-#         run: |
-#           apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
-#           apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
-#       - name: Get MMCV_TORCH and MMCV_CUDA as environment variables
-#         run: . .github/workflows/scripts/get_mmcv_var.sh ${{matrix.torch}} ${{matrix.cuda}}
-#         shell: bash
-#       - name: Install Python-dev
-#         run: apt-get update && apt-get install -y python${{matrix.python-version}}-dev
-#         if: ${{matrix.python-version != 3.9}}
-#       - name: Install system dependencies
-#         run: |
-#           apt-get update && apt-get install -y ffmpeg libsm6 libxext6 git ninja-build libglib2.0-0 libsm6 libxrender-dev libxext6
-#       - name: Install mmocr dependencies
-#         run: |
-#           python -m pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/${MMCV_CUDA}/torch${MMCV_TORCH}}/index.html
-#           python -m pip install mmdet
-#           python -m pip install -r requirements.txt
-#       - name: Build and install
-#         run: |
-#           python setup.py check -m -s
-#           TORCH_CUDA_ARCH_LIST=7.0 python -m pip install -e .
+  build_cu102:
+    runs-on: ubuntu-18.04
+    container:
+      image: pytorch/pytorch:1.8.1-cuda10.2-cudnn7-devel
+    strategy:
+      matrix:
+        python-version: [3.7]
+        include:
+          - torch: 1.8.1
+            cuda: 10.2
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Fetch GPG keys
+        run: |
+          apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
+          apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
+      - name: Install Python-dev
+        run: apt-get update && apt-get install -y python${{matrix.python-version}}-dev
+        if: ${{matrix.python-version != 3.9}}
+      - name: Install system dependencies
+        run: |
+          apt-get update && apt-get install -y ffmpeg libsm6 libxext6 git ninja-build libglib2.0-0 libsm6 libxrender-dev libxext6
+      - name: Install mmocr dependencies
+        run: |
+          pip install git+https://github.com/open-mmlab/mmengine.git@main
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+          pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+          pip install -r requirements/tests.txt
+      - name: Build and install
+        run: |
+          python setup.py check -m -s
+          TORCH_CUDA_ARCH_LIST=7.0 pip install -e .
 
-#   build_windows:
-#     runs-on: ${{ matrix.os }}
-#     strategy:
-#       matrix:
-#         os: [windows-2022]
-#         python: [3.7]
-#         platform: [cpu, cu102]
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Upgrade pip
-#         run: python -m pip install pip --upgrade
-#       - name: Install lmdb
-#         run: python -m pip install lmdb
-#       - name: Install PyTorch
-#         run: python -m pip install torch==1.8.1+${{matrix.platform}} torchvision==0.9.1+${{matrix.platform}} -f https://download.pytorch.org/whl/lts/1.8/torch_lts.html
-#       - name: Install mmocr dependencies
-#         run: |
-#           python -m pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8/index.html --only-binary mmcv-full
-#           python -m pip install mmdet
-#           python -m pip install -r requirements.txt
-#       - name: Build and install
-#         run: |
-#           python -m pip install -e .
-#       - name: Run unittests and generate coverage report
-#         run: |
-#           pytest tests/
+  build_windows:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-2022]
+        python: [3.7]
+        platform: [cpu]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Install lmdb
+        run: pip install lmdb
+      - name: Install PyTorch
+        run: pip install torch==1.8.1+${{matrix.platform}} torchvision==0.9.1+${{matrix.platform}} -f https://download.pytorch.org/whl/lts/1.8/torch_lts.html
+      - name: Install mmocr dependencies
+        run: |
+          pip install git+https://github.com/open-mmlab/mmengine.git@main
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+          pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+          pip install -r requirements/tests.txt
+      - name: Build and install
+        run: |
+          pip install -e .
+      - name: Run unittests and generate coverage report
+        run: |
+          pytest tests/
diff --git a/.github/workflows/pr_stage_test.yml b/.github/workflows/pr_stage_test.yml
index b7568419..dbc68308 100644
--- a/.github/workflows/pr_stage_test.yml
+++ b/.github/workflows/pr_stage_test.yml
@@ -14,117 +14,119 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-# jobs:
-#   build_cpu:
-#     runs-on: ubuntu-18.04
-#     strategy:
-#       matrix:
-#         python-version: [3.7]
-#         include:
-#           - torch: 1.8.1
-#             torchvision: 0.9.1
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Upgrade pip
-#         run: pip install pip --upgrade
-#       - name: Get MMCV_TORCH as the environment variable
-#         run: . .github/workflows/scripts/get_mmcv_var.sh ${{matrix.torch}}
-#         shell: bash
-#       - name: Install PyTorch
-#         run: pip install torch==${{matrix.torch}}+cpu torchvision==${{matrix.torchvision}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
-#       - name: Install MMCV
-#         run: pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cpu/torch${MMCV_TORCH}/index.html
-#       - name: Install MMDet
-#         run: pip install mmdet
-#       - name: Install other dependencies
-#         run: pip install -r requirements.txt
-#       - name: Build and install
-#         run: rm -rf .eggs && pip install -e .
-#       - name: Run unittests and generate coverage report
-#         run: |
-#           coverage run --branch --source mmocr -m pytest tests/
-#           coverage xml
-#           coverage report -m
-#       # Upload coverage report for python3.7 && pytorch1.8.1 cpu
-#       - name: Upload coverage to Codecov
-#         uses: codecov/codecov-action@v1.0.14
-#         with:
-#           file: ./coverage.xml
-#           flags: unittests
-#           env_vars: OS,PYTHON
-#           name: codecov-umbrella
-#           fail_ci_if_error: false
+jobs:
+  build_cpu:
+    runs-on: ubuntu-18.04
+    strategy:
+      matrix:
+        python-version: [3.7]
+        include:
+          - torch: 1.8.1
+            torchvision: 0.9.1
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Install PyTorch
+        run: pip install torch==${{matrix.torch}}+cpu torchvision==${{matrix.torchvision}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
+      - name: Install MMEngine
+        run: pip install git+https://github.com/open-mmlab/mmengine.git@main
+      - name: Install MMCV
+        run: |
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+      - name: Install MMDet
+        run: pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+      - name: Install other dependencies
+        run: pip install -r requirements/tests.txt
+      - name: Build and install
+        run: rm -rf .eggs && pip install -e .
+      - name: Run unittests and generate coverage report
+        run: |
+          coverage run --branch --source mmocr -m pytest tests/
+          coverage xml
+          coverage report -m
+      # Upload coverage report for python3.7 && pytorch1.8.1 cpu
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v1.0.14
+        with:
+          file: ./coverage.xml
+          flags: unittests
+          env_vars: OS,PYTHON
+          name: codecov-umbrella
+          fail_ci_if_error: false
 
-#   build_cu102:
-#     runs-on: ubuntu-18.04
-#     container:
-#       image: pytorch/pytorch:1.8.1-cuda10.2-cudnn7-devel
-#     strategy:
-#       matrix:
-#         python-version: [3.7]
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Upgrade pip
-#         run: python -m pip install pip --upgrade
-#       - name: Fetch GPG keys
-#         run: |
-#           apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
-#           apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
-#       - name: Get MMCV_TORCH and MMCV_CUDA as environment variables
-#         run: . .github/workflows/scripts/get_mmcv_var.sh ${{matrix.torch}} ${{matrix.cuda}}
-#         shell: bash
-#       - name: Install Python-dev
-#         run: apt-get update && apt-get install -y python${{matrix.python-version}}-dev
-#         if: ${{matrix.python-version != 3.9}}
-#       - name: Install system dependencies
-#         run: |
-#           apt-get update
-#           apt-get install -y ffmpeg libsm6 libxext6 git ninja-build libglib2.0-0 libxrender-dev
-#       - name: Install mmocr dependencies
-#         run: |
-#           python -m pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/${MMCV_CUDA}/torch${MMCV_TORCH}/index.html
-#           python -m pip install mmdet
-#           python -m pip install -r requirements.txt
-#       - name: Build and install
-#         run: |
-#           python setup.py check -m -s
-#           TORCH_CUDA_ARCH_LIST=7.0 python -m pip install -e .
+  build_cu102:
+    runs-on: ubuntu-18.04
+    container:
+      image: pytorch/pytorch:1.8.1-cuda10.2-cudnn7-devel
+    strategy:
+      matrix:
+        python-version: [3.7]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Fetch GPG keys
+        run: |
+          apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/3bf863cc.pub
+          apt-key adv --fetch-keys https://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1804/x86_64/7fa2af80.pub
+      - name: Install Python-dev
+        run: apt-get update && apt-get install -y python${{matrix.python-version}}-dev
+        if: ${{matrix.python-version != 3.9}}
+      - name: Install system dependencies
+        run: |
+          apt-get update
+          apt-get install -y ffmpeg libsm6 libxext6 git ninja-build libglib2.0-0 libxrender-dev
+      - name: Install mmocr dependencies
+        run: |
+          pip install git+https://github.com/open-mmlab/mmengine.git@main
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+          pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+          pip install -r requirements/tests.txt
+      - name: Build and install
+        run: |
+          python setup.py check -m -s
+          TORCH_CUDA_ARCH_LIST=7.0 pip install -e .
 
-#   build_windows:
-#     runs-on: ${{ matrix.os }}
-#     strategy:
-#       matrix:
-#         os: [windows-2022]
-#         python: [3.7]
-#         platform: [cpu, cu102]
-#     steps:
-#       - uses: actions/checkout@v2
-#       - name: Set up Python ${{ matrix.python-version }}
-#         uses: actions/setup-python@v2
-#         with:
-#           python-version: ${{ matrix.python-version }}
-#       - name: Upgrade pip
-#         run: python -m pip install pip --upgrade
-#       - name: Install lmdb
-#         run: python -m pip install lmdb
-#       - name: Install PyTorch
-#         run: python -m pip install torch==1.8.1+${{matrix.platform}} torchvision==0.9.1+${{matrix.platform}} -f https://download.pytorch.org/whl/lts/1.8/torch_lts.html
-#       - name: Install mmocr dependencies
-#         run: |
-#           python -m pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cpu/torch1.8/index.html --only-binary mmcv-full
-#           python -m pip install mmdet
-#           python -m pip install -r requirements.txt
-#       - name: Build and install
-#         run: |
-#           python -m pip install -e .
-#       - name: Run unittests and generate coverage report
-#         run: |
-#           pytest tests/
+  build_windows:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-2022]
+        python: [3.7]
+        platform: [cpu]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Upgrade pip
+        run: pip install pip --upgrade
+      - name: Install lmdb
+        run: pip install lmdb
+      - name: Install PyTorch
+        run: pip install torch==1.8.1+${{matrix.platform}} torchvision==0.9.1+${{matrix.platform}} -f https://download.pytorch.org/whl/lts/1.8/torch_lts.html
+      - name: Install mmocr dependencies
+        run: |
+          pip install git+https://github.com/open-mmlab/mmengine.git@main
+          pip install -U openmim
+          mim install 'mmcv >= 2.0.0rc1'
+          pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x
+          pip install -r requirements/tests.txt
+      - name: Build and install
+        run: |
+          pip install -e .
+      - name: Run unittests and generate coverage report
+        run: |
+          pytest tests/
diff --git a/.github/workflows/scripts/get_mmcv_var.sh b/.github/workflows/scripts/get_mmcv_var.sh
deleted file mode 100755
index 67604fec..00000000
--- a/.github/workflows/scripts/get_mmcv_var.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-
-TORCH=$1
-CUDA=$2
-
-# 10.2 -> cu102
-MMCV_CUDA="cu`echo ${CUDA} | tr -d '.'`"
-
-# MMCV only provides pre-compiled packages for torch 1.x.0
-# which works for any subversions of torch 1.x.
-# We force the torch version to be 1.x.0 to ease package searching
-# and avoid unnecessary rebuild during MMCV's installation.
-TORCH_VER_ARR=(${TORCH//./ })
-TORCH_VER_ARR[2]=0
-printf -v MMCV_TORCH "%s." "${TORCH_VER_ARR[@]}"
-MMCV_TORCH=${MMCV_TORCH%?}  # Remove the last dot
-
-echo "MMCV_CUDA=${MMCV_CUDA}" >> $GITHUB_ENV
-echo "MMCV_TORCH=${MMCV_TORCH}" >> $GITHUB_ENV
diff --git a/mmocr/datasets/recog_lmdb_dataset.py b/mmocr/datasets/recog_lmdb_dataset.py
index e76409f9..2c5c0dd9 100644
--- a/mmocr/datasets/recog_lmdb_dataset.py
+++ b/mmocr/datasets/recog_lmdb_dataset.py
@@ -191,3 +191,9 @@ class RecogLMDBDataset(BaseDataset):
             readahead=False,
             meminit=False,
         )
+
+    def close(self):
+        """Close lmdb environment."""
+        if hasattr(self, 'env'):
+            self.env.close()
+            del self.env
diff --git a/tests/test_datasets/test_recog_lmdb_dataset.py b/tests/test_datasets/test_recog_lmdb_dataset.py
index c52d048b..27201cca 100644
--- a/tests/test_datasets/test_recog_lmdb_dataset.py
+++ b/tests/test_datasets/test_recog_lmdb_dataset.py
@@ -37,7 +37,8 @@ class TestRecogLMDBDataset(TestCase):
 
         # test load_data_list
         anno = dataset.load_data_list()[0]
-        self.assertEqual(anno['img_path'], 'imgs/1223731.jpg')
+        self.assertIn(anno['img_path'],
+                      ['imgs/1223731.jpg', 'imgs\\1223731.jpg'])
         self.assertEqual(anno['instances'][0]['text'], 'GRAND')
 
     def test_label_and_image_dataset(self):
@@ -53,7 +54,8 @@ class TestRecogLMDBDataset(TestCase):
 
         # test load_data_list
         anno = dataset.load_data_list()[0]
-        self.assertEqual(anno['img_path'], f'imgs/image-{1:09d}')
+        self.assertIn(anno['img_path'],
+                      [f'imgs/image-{1:09d}', f'imgs\\image-{1:09d}'])
         self.assertEqual(anno['instances'][0]['text'], 'GRAND')
 
     def test_deprecated_format(self):
@@ -75,3 +77,4 @@ class TestRecogLMDBDataset(TestCase):
 
             dataset.full_init()
             self.assertWarnsRegex(UserWarning, warm_msg)
+            dataset.close()
diff --git a/tests/test_datasets/test_recog_text_dataset.py b/tests/test_datasets/test_recog_text_dataset.py
index 02dc7c90..f9550d17 100644
--- a/tests/test_datasets/test_recog_text_dataset.py
+++ b/tests/test_datasets/test_recog_text_dataset.py
@@ -23,9 +23,12 @@ class TestRecogTextDataset(TestCase):
 
         # test load_data_list
         anno = dataset.load_data_list()
-        self.assertEqual(anno[0]['img_path'], 'imgs/1223731.jpg')
+        self.assertIn(anno[0]['img_path'],
+                      ['imgs/1223731.jpg', 'imgs\\1223731.jpg'])
         self.assertEqual(anno[0]['instances'][0]['text'], 'GRAND')
-        self.assertEqual(anno[1]['img_path'], 'imgs/1223733.jpg')
+        self.assertIn(anno[1]['img_path'],
+                      ['imgs/1223733.jpg', 'imgs\\1223733.jpg'])
+
         self.assertEqual(anno[1]['instances'][0]['text'], 'HOTEL')
 
     def test_jsonl_dataset(self):
@@ -40,7 +43,9 @@ class TestRecogTextDataset(TestCase):
 
         # test load_data_list
         anno = dataset.load_data_list()
-        self.assertEqual(anno[0]['img_path'], 'imgs/1223731.jpg')
+        self.assertIn(anno[0]['img_path'],
+                      ['imgs/1223731.jpg', 'imgs\\1223731.jpg'])
         self.assertEqual(anno[0]['instances'][0]['text'], 'GRAND')
-        self.assertEqual(anno[1]['img_path'], 'imgs/1223733.jpg')
+        self.assertIn(anno[1]['img_path'],
+                      ['imgs/1223733.jpg', 'imgs\\1223733.jpg'])
         self.assertEqual(anno[1]['instances'][0]['text'], 'HOTEL')