Publisher Operator

Authors: Holoscan SDK Team (NVIDIA)
Supported platforms: x86_64, aarch64
Language: Python
Last modified: June 2, 2025
Latest version: 1.1.0
Minimum Holoscan SDK version: 1.0.3
Tested Holoscan SDK versions: 2.2.0, 3.2.0
Contribution metric: Level 2 - Trusted

This operator publishes medical imaging data to downstream consumers or external systems.

Overview

The PublisherOperator enables flexible publishing of processed medical imaging data for visualization, storage, or further analysis in Holoscan pipelines.

Requirements

• Holoscan SDK Python package

Example Usage

from holoscan.core import Fragment
from operators.medical_imaging.publisher_operator import PublisherOperator
from pathlib import Path

# Create a fragment
fragment = Fragment()

# Initialize the publisher operator with input and output folders
pub_op = PublisherOperator(
    fragment,
    input_folder=Path("path/to/input"),  # Folder containing input and segment mask files
    output_folder=Path("path/to/output")  # Folder where published files will be saved
)

# Add the operator to the fragment
fragment.add_operator(pub_op)

The operator expects:

• Input folder containing medical imaging files (nii, nii.gz, or mhd format)
• Output folder where the published files will be saved
• The operator will automatically find density and mask files in the input folder
• Published files will include the original images and configuration files for visualization