Custom Parser deepstream 6.2 using python prorgramming for Yolov8

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) Jestson
• DeepStream Version : 6,2
• JetPack Version (valid for Jetson only) 5.2
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

Hello All,

I have Yolov8 model and I am using deepstream 6.2 python and I want to build custom parser for Yolov8 using python programming

Can you help me to documentation for custom parser using python or give me steps here

Appreciate your feedback

3

Could you refer to the DeepStream-Yolo-Face first to see if it meets your needs?

4

inside config_infer_primary_yoloV8_face.txt

parse-bbox-instance-mask-func-name=NvDsInferParseYoloFace
custom-lib-path=nvdsinfer_custom_impl_Yolo_face/libnvdsinfer_custom_impl_Yolo_face.so
output-instance-mask=1

can i replace libnvdsinfer_custom_impl_Yolo_face.so c++ custom parser with
libnvdsinfer_custom_impl_Yolo_face.py python custom parser ?

so can we implement custom parser in python programming language?

Appreciate your feedback

5

No.

Yes. But this is more complicated. You need to get the output tensor data and parse that yourself. You can refer to the deepstream-ssd-parser to learn how to get the output tensor and parse that.

6

Thanks for your feedback

example you shared use custom parser in probe function but I need custom parser process output detections after yolov8 directly so can you give me direct example that will replace libnvdsinfer_custom_impl_Yolo_face.so with custom libnvdsinfer_custom_impl_Yolo_face.py

7

No. You cannot replace libnvdsinfer_custom_impl_Yolo_face.so with custom libnvdsinfer_custom_impl_Yolo_face.py. It’s used by the sources\libs\nvdsinfer\nvdsinfer_context_impl.cpp. You can refer to our source code.

    if (!string_empty(initParams.customLibPath))
    {
        std::unique_ptr<DlLibHandle> dlHandle =
            std::make_unique<DlLibHandle>(initParams.customLibPath, RTLD_LAZY);
        if (!dlHandle->isValid())
        {
            printError("Could not open custom lib: %s", dlerror());
            return NVDSINFER_CUSTOM_LIB_FAILED;
        }
        m_CustomLibHandle = std::move(dlHandle);
    }
8

There is no update from you for a period, assuming this is not an issue anymore. Hence we are closing this topic. If need further support, please open a new one. Thanks

9

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