Privacy Blur Privacy Blur is a Flow-Like WASM node package that reads an image from a FlowPath , detects faces, blurs detected regions, and writes the processed image to another FlowPath . It is designed for privacy-preserving image workflows that need to run inside the Flow-Like WASM sandbox. The implementation uses pure Rust image processing and an embedded SeetaFace/rustface frontal face detector model. Node Node Category Description blur_faces Image/Privacy Reads a source image, blurs detected face regions, and writes the result to a target path. Inputs Pin Type Description exec Execution Starts processing. image_path FlowPath struct Source image path. target_path FlowPath struct Destination image path. .jpg / .jpeg writes JPEG; all other extensions write PNG. detection_mode String Recall/false-positive tradeoff: balanced , aggressive , or maximum . Defaults to aggressive . Outputs Pin Type Description exec_out Execution Activated after a successful write. error_out Execution Activated when reading, decoding, detection setup, encoding, or writing fails. output_path FlowPath struct Destination path that received the output image. face_count Integer Number of blurred regions. succeeded Boolean true after successful processing, false on the failure branch. error_message String Failure details when error_out is activated. If no faces are detected, the node still writes the decoded image to the target path and returns face_count = 0 . Detection Modes Mode Intended Use balanced Fewer false positives, lower recall. aggressive Default privacy/reliability balance. maximum Highest recall available in this detector, with extra filtering for weak low-score detections. The detector is best suited for frontal or near-frontal faces. Rotated, occluded, profile, very small, or low-contrast faces can still be missed. The maximum mode may blur occasional non-face regions; use aggressive or balanced when false positives matter more than recall. Licenses and Model Provenance This repository contains components under multiple permissive licenses: The Privacy Blur package source code is licensed under MIT. The embedded SeetaFace detector model and the compiled rustface detector implementation are BSD-2-Clause licensed. The package metadata uses the SPDX expression MIT AND BSD-2-Clause because the distributed WASM includes both sets of licensed material. See LICENSE , LICENSE-MIT , LICENSE-BSD-2-Clause , and NOTICE.md .