Skip to content

Tool Tracking Postprocessor Operator#

Authors: Holoscan Team (NVIDIA)
Supported platforms: x86_64, aarch64
Language: C++, Python
Last modified: August 5, 2025
Latest version: 1.0
Minimum Holoscan SDK version: 0.5.0
Tested Holoscan SDK versions: 0.5.0
Contribution metric: Level 1 - Highly Reliable

The tool_tracking_postprocessor extension provides a codelet that converts inference output of lstm_tensor_rt_inference used in the endoscopy tool tracking pipeline to be consumed by the holoviz codelet.

nvidia::holoscan::tool_tracking_postprocessor#

Tool tracking postprocessor codelet

Parameters#
  • in: Input channel, type gxf::Tensor
  • type: gxf::Handle<gxf::Receiver>
  • out: Output channel, type gxf::Tensor
  • type: gxf::Handle<gxf::Transmitter>
  • min_prob: Minimum probability, (default: 0.5)
  • type: float
  • overlay_img_colors: Color of the image overlays, a list of RGB values with components between 0 and 1, (default: 12 qualitative classes color scheme from colorbrewer2)
  • type: std::vector<std::vector<float>>
  • device_allocator: Output Allocator
  • type: gxf::Handle<gxf::Allocator>
  • cuda_stream_pool: Instance of gxf::CudaStreamPool
  • type: gxf::Handle<gxf::CudaStreamPool>