Spatial

Spatial analyst - skill orchestration

This package follows the Agent Skills layout. Executable code lives in src/skill/spatial/; this file defines which Python sub-skills exist and when each is appropriate, so a router can activate a subset per video.

Machine-readable routing

Viagent parses the YAML block below (first fenced yaml block that contains viagent_routing). Each id must match a key in the spatial pipeline.

viagent_routing:
  version: 1
  subskills:
    - id: ela
      when: >-
        Error Level Analysis along face/foreground boundaries. Use for almost all
        videos; best default for composite edges and halo artifacts. Safe general
        spatial check.
    - id: patch
      when: >-
        Local patch texture inconsistency inside facial regions. Prefer when faces
        or skin are visible; less informative for distant landscapes with no faces.
    - id: boundary
      when: >-
        Edge melting / abnormal face-to-background transition. Prefer when there is
        a clear subject and background; skip or deprioritize for flat abstract
        graphics or text-only slides.
    - id: edge
      when: >-
        Local edge coherence (soft/noisy boundaries, possible floating objects).
        General spatial cue; useful for natural scenes and talking-head videos.
    - id: multi_face
      when: >-
        Multi-face geometric collapse / inconsistency across frames. Run only when
        multiple faces or crowded people are plausible; omit for single-subject
        tutorials, screens, gameplay without faces, or nature-only footage.
    - id: blur
      when: >-
        Laplacian blur uniformity (face vs background sharpness). Requires face
        regions for full value; pair with multi_face when possible. Omit when no
        faces expected (reduces misleading ratios).

Runtime (Viagent)

Each analyst calls a vision sub-skill router before CV: a multimodal LLM sees a few preview frames (chronological spread) plus this file's viagent_routing text and JSON metadata, then returns which sub-skills to run.

Optional llm YAML keys: skill_router_temperature, skill_router_max_preview_frames. Code: src/agents/routing/router_llm.py.

References

Add per-skill deep docs under references/ as needed (one level from this file).