SWT for Python 3

.dockerignore

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+lib
+cmake-build-debug
+cmake-build-release
+Dockerfile

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/clion,python,pycharm
+# Edit at https://www.toptal.com/developers/gitignore?templates=clion,python,pycharm
+
+### CLion ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### CLion Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
+# *.iml
+# modules.xml
+# .idea/misc.xml
+# *.ipr
+
+# Sonarlint plugin
+# https://plugins.jetbrains.com/plugin/7973-sonarlint
+.idea/**/sonarlint/
+
+# SonarQube Plugin
+# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
+.idea/**/sonarIssues.xml
+
+# Markdown Navigator plugin
+# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
+.idea/**/markdown-navigator.xml
+.idea/**/markdown-navigator-enh.xml
+.idea/**/markdown-navigator/
+
+# Cache file creation bug
+# See https://youtrack.jetbrains.com/issue/JBR-2257
+.idea/$CACHE_FILE$
+
+# CodeStream plugin
+# https://plugins.jetbrains.com/plugin/12206-codestream
+.idea/codestream.xml
+
+### PyCharm ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+
+# Generated files
+
+# Sensitive or high-churn files
+
+# Gradle
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+
+# Mongo Explorer plugin
+
+# File-based project format
+
+# IntelliJ
+
+# mpeltonen/sbt-idea plugin
+
+# JIRA plugin
+
+# Cursive Clojure plugin
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+
+# Editor-based Rest Client
+
+# Android studio 3.1+ serialized cache file
+
+### PyCharm Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
+# *.iml
+# modules.xml
+# .idea/misc.xml
+# *.ipr
+
+# Sonarlint plugin
+# https://plugins.jetbrains.com/plugin/7973-sonarlint
+
+# SonarQube Plugin
+# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
+
+# Markdown Navigator plugin
+# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
+
+# Cache file creation bug
+# See https://youtrack.jetbrains.com/issue/JBR-2257
+
+# CodeStream plugin
+# https://plugins.jetbrains.com/plugin/12206-codestream
+
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+pytestdebug.log
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+doc/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+pythonenv*
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# profiling data
+.prof
+.idea
+# End of https://www.toptal.com/developers/gitignore/api/clion,python,pycharm

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.17)
+project(swt_python3)
+
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_FLAGS "-O3")
+set(CMAKE_CXX_FLAGS_DEBUG "-g -O3")
+
+find_library(CCV ccv lib)
+find_package(JPEG REQUIRED)
+find_package(PNG REQUIRED)
+#find_package(PythonLibs)
+include_directories(${PYTHON_INCLUDE_DIRS})
+
+add_subdirectory(pybind11)
+pybind11_add_module(swt_python3)
+target_sources(swt_python3 PRIVATE swt_python3.cpp)
+target_link_libraries(swt_python3 PRIVATE ${CCV} ${JPEG_LIBRARIES} ${PNG_LIBRARIES})

Dockerfile

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+FROM python:3.9.1-buster as base
+RUN apt-get update && apt-get install -y libjpeg-dev libpng-dev libatlas-base-dev libblas-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+FROM base AS build
+# INSTALL CMAKE
+WORKDIR /cmake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.19.2/cmake-3.19.2-Linux-x86_64.sh && \
+    mkdir -p /opt/cmake && \
+    bash cmake-3.19.2-Linux-x86_64.sh --prefix=/opt/cmake --skip-license && \
+    ln -s /opt/cmake/bin/cmake /usr/local/bin/cmake
+
+# BUILD CCV library
+RUN mkdir /ccv && \
+    git clone --single-branch --branch stable --depth 1 https://github.com/marrrcin/ccv.git /ccv && \
+    cd /ccv/lib && ./configure && \
+#    sed -i 's/O3/O0/g' makefile && \ # UNCOMENT THIS FOR FASTER DEBUG-PURPOSE BUILDS
+    make libccv.a
+
+# BUILD WRAPPER
+RUN mkdir -p /swt-python/lib
+COPY . /swt-python
+RUN cp /ccv/lib/ccv.h /swt-python/lib/ccv.h && cp /ccv/lib/libccv.a /swt-python/lib/libccv.a
+WORKDIR /swt-python
+RUN cmake -DCMAKE_BUILD_TYPE=Release -DPYTHON_INCLUDE_DIRS=/usr/local/include/python3.9 . && make
+
+FROM base as runtime
+RUN mkdir /swt-python
+WORKDIR /swt-python
+COPY --from=build /swt-python/*.so /swt-python
+COPY test.py /swt-python
+COPY requirements.txt /swt-python
+RUN pip install --no-cache-dir -r requirements.txt
+COPY input.jpg /swt-python
+ENTRYPOINT ["python", "test.py"]

pybind11/CMakeLists.txt

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+include(FetchContent)
+
+#FetchContent_Declare(
+#        pybind11
+#        URL   "https://github.com/pybind/pybind11/archive/v2.4.2.tar.gz"
+#        URL_HASH SHA512=05a49f99c1dff8077b05536044244301fd1baff13faaa72c400eafe67d9cb2e4320c77ad02d1b389092df703cc585d17da0d1e936b06112e2c199f6c1a6eb3fc
+#)
+
+FetchContent_Declare(
+        pybind11
+        URL   "https://github.com/pybind/pybind11/archive/v2.6.1.tar.gz"
+)
+
+FetchContent_MakeAvailable(pybind11)

requirements.txt

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+scikit-image==0.18.1