Changelog

Color Descriptor filter release notes

v1.6.12 - 2025-07-14

• Migrate from filter_runtime to openfilter

v1.6.11 - 2024-03-07

Added

• Internal improvements

v1.6.7 - 2024-03-07

• Initial Release: new color descriptor filter for extracting and classifying visual features from video frames

• Color-Based Feature Extraction

  • Supports ROI-based extraction of HSV and RGB features
  • Configurable extractors (currently supports: color)

• Flexible Calibration Modes

  • Choose from zero_shot, one_shot, or few_shot calibration
  • Calibrates feature distributions and fits classifier on labeled data

• Multi-State Classification

  • Classify frame regions using distance-based or multi-state classifiers
  • Supports configurable number of output states and labels

• ROI Detection and Tracking

  • Loads ROI definitions from config and dynamically adjusts based on movement
  • Visualizes state, ROI, and features directly on frames

• Offline Mode Support

  • Allows replay of upstream data (e.g. from VizCal) using input_json_path

• Cloud Sync and Movement Reporting

  • Optional GCP sync for movement-triggered frames
  • Generates sample videos and sends telemetry to Cloud Monitoring

• Telemetry & Debug Tools

  • Built-in metric telemetry (exporter configurable)
  • Visual debugging overlay and detailed logs with debug mode

• Structured Output Logging

  • Outputs frame-level JSON summaries to output_json_path and full_json_path