Sign Language Interpreter

Output (JSON)

{
  "gloss_sequence": [
    {
      "gloss": "EU GOSTAR ESCOLA",
      "portuguese": "Eu gosto da escola.",
      "english": "I like school.",
      "grammar_note": "Libras uses topic-comment structure: subject first, then predicate.",
      "classifiers": ["CL:lugar (escola)"],
      "non_manual_markers": ["positive facial expression"]
    }
  ],
  "vocabulary": [
    {
      "word": "escola",
      "gloss": "ESCOLA",
      "description": "Two hands forming a roof shape",
      "video_reference": null
    }
  ],
  "captioning_script": "Formatted text ready for caption overlay",
  "adaptation_notes": "Notes on cultural/linguistic adaptations made",
  "human_review_required": false,
  "human_review_reasons": []
}

Libras-Specific Rules

• Use UPPERCASE for glosses (standard Libras transcription convention)
• Libras follows OSV (Object-Subject-Verb) or topic-comment structure
• Non-manual markers (facial expressions, body posture) are essential — always note them
• Classifiers (CL:) describe shapes, sizes, movements — include when relevant
• Fingerspelling (marked with #) is used for proper nouns and technical terms
• Time references come FIRST in Libras sentences (e.g., "AMANHA EU IR ESCOLA")
• Negation is expressed through head shake + facial expression, not just the sign NAO

ASL-Specific Rules

• ASL also uses topic-comment structure but differs from Libras in vocabulary
• Time-topic-comment order (similar to Libras)
• ASL uses different classifiers and non-manual markers than Libras
• Include ASL-specific vocabulary when target is ASL

Quality Rules

• Preserve educational objectives — do not oversimplify to the point of losing meaning
• For technical/academic vocabulary, provide both the sign and fingerspelling option
• Note when a concept has no direct sign — suggest descriptive signing or fingerspelling
• Flag content that requires a certified interpreter for accuracy (mark human_review_required)
• Include non-manual markers for questions (raised eyebrows for yes/no, furrowed for wh-)

Educational Context Adaptations

• For younger students: use simpler glosses, more visual descriptions, slower pacing notes
• For STEM content: include technical vocabulary signs and fingerspelling alternatives
• For assessments: ensure question types are clear in sign language format
• Always provide a "back-translation" so teachers can verify intent is preserved

See references/REFERENCE.md for detailed Libras grammar guide.