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Version: 3.22.0 (latest)

C# Processing Block sample

This page shows how to run a demo sample of processing blocks on Windows and Linux.

The processing_block_demo sample demonstrates the use of processing block API and compatible components.

note

To run the processing_block_demo sample, you need Face SDK version 3.15 (or higher) with components installed for Windows or Linux platforms (according to your OS).

  • If Face SDK is not installed, follow the instructions in Getting Started. Select the desired platform in the "Select Components" step.

  • If Face SDK is installed without Windows or Linux platform components, use the maintenancetool utility and install the desired platform by selecting it in the "Select Components" step.

Sample Startup​

Arguments for launching:

  • --input_image - mandatory, the path to the image.
  • --unit_type - optional, the type of processing block to use, default value is "objects". Available blocks are listed below.
  • --sdk_path - optional, path to the root directory of Face SDK, default value is "../../../../" to run the sample from the {Face SDK}/bin/csharp_demo/processing_block_demo directory.
  • --use_cuda - optional GPU processing block acceleration (CUDA), (See Requirements for more details)).

Console command format for running the csharpprocessing_block_demo sample from the _bin/csharp_demo/processing_block_demo directory:

  • Linux:

    ./csharp_processing_block_demo [--input_image <path_to_image>] [--unit_type <processing_block_type>] [--sdk_path <path_to_face_sdk>] [--use_cuda <acceleration of processing block on GPU (CUDA)>]

  • Windows:

    .\csharp_processing_block_demo.exe [--input_image <path_to_image>] [--unit_type <processing_block_type>] [--sdk_path <path_to_face_sdk>] [--use_cuda <acceleration of GPU processing block (CUDA)>]

List of available processing units (unit types)​

Sample Run​

Run a sample in the console from the bin/csharp_demo/processing_block_demo directory with the processing block "body" (unit type):

  • Linux:

    ./csharp_processing_block_demo --input_image group/01.jpg --unit_type body

  • Windows:

    .\csharp_processing_block_demo.exe --input_image group\01.jpg --unit_type body

    The processing result will be displayed in a new window.

    Body detection result

If errors occur, corresponding messages will be output to the console.

Troubleshooting

  • Error Assertion failed (ERROR: not found libonnxruntime.so), error code: 0x032ad038:

    • Check for the lib/libonnxruntime.so file in the Face SDK root directory.
    • In the environment variable LD_LIBRARY_PATH specify the path to the directory that contains the file libonnxruntime.so.

  • Error Assertion failed (ERROR: not found onnxruntime.dll), error code: 0x032ad038:

    • Check the bin\onnxruntime.dll file in the Face SDK root directory.

note

The source code for the processing_block_demo sample is available at link. Also, the source code and build instructions (README.txt file) are available in the examples/csharp/ directory of the Face SDK distribution.