dotnet-docker VS opencv_contrib

This cool method lets you whip up optimized apps that get along swimmingly with Docker. Neat, huh? --platform values. Take a peek at this sample to see the pattern in action!

You can also use the .NET Docker images to run (or build from source and then run) .NET applications.

Sadly, lots of dotnet apps still out there. Luckily, there's a container for that too!

A search of "alpine 3.17 ssl" brings up this link that shows the same error.

Actually, it looks like I am a bit out of the loop, and there is an official .NET runtime for Linux, so you can use it like any other Linux docker images. Looks like there are examples here: https://github.com/dotnet/dotnet-docker

It is good that you are thinking about security 😊. there is an issue in dotnet repo here https://github.com/dotnet/dotnet-docker/issues/1772 that have hardened examples.

You can use .NET without using ASP.NET Core (yes, the names are confusing right now, they dropped the "Core" suffix for the platform but did not drop the suffix for the web framework). Microsoft publishes a Docker image for .NET for when you just want to run some compiled CIL, but they also provide a Docker image where it includes .NET and ASP.NET Core for when you run a compiled ASP.NET Core web app. (https://hub.docker.com/_/microsoft-dotnet/)

Keeping the whole Maritime theme alive with Docker (and Kubernetes), I jumped into the sea of Docker Hub with millions of containers and found out that Microsoft hosts all the .NET related container images as .NET by Microsoft registry.

ARG OPENCV_SHARP_BUILD_TAG=2 ARG SDK_VERSION=6.0.202-bullseye-slim-amd64 ARG RUNTIME_VERSION=6.0.4-bullseye-slim FROM syamaner/opencvsharp-build:$OPENCV_SHARP_BUILD_TAG AS opencv # Given we are building a .Net application, the build does not have to be in the target architecture. # Reference: https://github.com/dotnet/dotnet-docker/issues/1537#issuecomment-755351628 FROM mcr.microsoft.com/dotnet/sdk:$SDK_VERSION as build ARG TARGETPLATFORM WORKDIR /src COPY . . # Select the correct RID for the target architecture. # run dotnet publish as usual and pass the RID. RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \ RID=linux-x64 ; \ elif [ "$TARGETPLATFORM" = "linux/arm64" ]; then \ RID=linux-arm64 ; \ elif [ "$TARGETPLATFORM" = "linux/arm/v7" ]; then \ RID=linux-arm ; \ fi && \ dotnet publish -c release -o /app -r $RID --self-contained false # Copy the application as well as native dependencies to the final stage and build the final image without any unnecessary files. FROM mcr.microsoft.com/dotnet/runtime:$RUNTIME_VERSION as final WORKDIR /app # Copy opencv sharp native binding and runtime dependencies. COPY --from=opencv /artifacts/ /usr/lib/ RUN ldconfig COPY --from=build /app/ /app/ ENTRYPOINT [ "dotnet", "/app/OpenCVSharpBenchmarkApp.dll" ]

I managed to use the cv2.ximgproc.ContourFitting in cpp instead of python with the help of the demo: https://github.com/opencv/opencv_contrib/blob/3.4.0/modules/ximgproc/samples/fourier_descriptors_demo.cpp

wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.1.0.zip

The issue has been reported here: https://github.com/opencv/opencv_contrib/issues/3390

FROM debian:bullseye-slim AS build-native-env ARG TARGETPLATFORM ENV DEBIAN_FRONTEND=noninteractive # 4.5.5: released 25 Dec 2021 ENV OPENCV_VERSION=4.5.5 # 4.5.3.20211228: released 28 Dec 2021 ENV OPENCVSHARP_VERSION=4.5.3.20211228 WORKDIR / # install dependencies required for building OpenCV and OpenCvSharpExtern RUN apt-get update && apt-get -y install --no-install-recommends \ # details omitted \ libgdiplus # Get OpenCV and opencv-contrib sources using the specified release. RUN wget https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip && \ unzip ${OPENCV_VERSION}.zip && \ rm ${OPENCV_VERSION}.zip && \ mv opencv-${OPENCV_VERSION} opencv RUN wget https://github.com/opencv/opencv_contrib/archive/${OPENCV_VERSION}.zip && \ unzip ${OPENCV_VERSION}.zip && \ rm ${OPENCV_VERSION}.zip && \ mv opencv_contrib-${OPENCV_VERSION} opencv_contrib # configure and build OpenCV optionally specifying architecture related cmake options. RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \ ADDITIONAL_FLAGS='' ; \ elif [ "$TARGETPLATFORM" = "linux/arm64" ]; then \ ADDITIONAL_FLAGS='-D ENABLE_NEON=ON -D CPU_BASELINE=NEON ' ; \ elif [ "$TARGETPLATFORM" = "linux/arm/v7" ]; then \ ADDITIONAL_FLAGS='-D CPU_BASELINE=NEON -D ENABLE_NEON=ON ' ; \ fi && cd opencv && mkdir build && cd build && \ cmake $ADDITIONAL_FLAGS \ # additional flags omitted for clarity \ && make -j$(nproc) \ && make install \ && ldconfig # Download OpenCvSharp to build OpenCvSharpExtern native library RUN git clone https://github.com/shimat/opencvsharp.git RUN cd opencvsharp && git fetch --all --tags --prune && git checkout ${OPENCVSHARP_VERSION} WORKDIR /opencvsharp/src RUN mkdir /opencvsharp/make \ && cd /opencvsharp/make \ && cmake -D CMAKE_INSTALL_PREFIX=/opencvsharp/make /opencvsharp/src \ && make -j$(nproc) \ && make install \ && cp /opencvsharp/make/OpenCvSharpExtern/libOpenCvSharpExtern.so /usr/lib/ \ && ldconfig # Copy the library and dependencies to /artifacts (to be used by images consuming this build) # cpld.sh will copy the library we specify (./libOpenCvSharpExtern.so) and any dependencies # to the /artifacts directory. This is useful for sharing the library with other images # consuming this build. # credits: Hemanth.HM -> https://h3manth.com/content/copying-shared-library-dependencies WORKDIR /opencvsharp/make/OpenCvSharpExtern COPY cpld.sh . RUN chmod +x cpld.sh && \ mkdir /artifacts && \ ./cpld.sh ./libOpenCvSharpExtern.so /artifacts/ RUN cp ./libOpenCvSharpExtern.so /artifacts/ # Publish the artefacts using a clean image FROM debian:bullseye-slim AS final RUN mkdir /artifacts COPY --from=build-native-env /artifacts/ /artifacts WORKDIR /artifacts

As the title implies, I'm looking for the simplest way to detect race/ethnicity in a photo (or a frame by frame video, shouldn't big a big difference) using OpenCV (I'm using the opencv-contrib build) and C++. I'm a complete beginner.

git clone https://github.com/opencv/opencv.git git clone https://github.com/opencv/opencv_contrib.git mkdir ~/opencv/build cd ~/opencv/build