超写实咖啡粉脸部印象

{
  "input": {
    "referenced_image_ids": ["<USER_UPLOADED_PHOTO_ID>"]
  },
  "frame": {
    "aspect_ratio": "3:4",
    "shot_size": "Close-Up (CU)",
    "orientation": "Portrait",
    "composition_guide": "Center Framed"
  },
  "subject": {
    "subject_type": "Human Face Impression (from reference)",
    "identity_summary": "Match the uploaded person’s face exactly, but formed as a pressed bas-relief impression in finely ground coffee (not a drawing/print).",
    "visual_signature": {
      "facial_signature": {
        "face_shape": "Match reference exactly",
        "eye_nose_lips_jaw": "Match reference exactly",
        "unique_features": "Do not change identity or proportions"
      },
      "material_signature": {
        "material_type": "Finely ground coffee powder",
        "texture_detail": "Ultra-detailed micro-granules, clumps, scattered dust, realistic compression"
      }
    },
    "inventory": {
      "objects_present": [
        "Coffee grounds mound with face impression centered",
        "Stainless-steel teaspoon on the right filled with coffee"
      ],
      "objects_absent": ["No extra props", "No text/logos"]
    }
  },
  "environment": {
    "setting_type": "Indoor Studio Tabletop",
    "background_surface": "Warm neutral beige surface, minimal and clean"
  },
  "lighting": {
    "primary_source": "Softbox upper-left",
    "shadow_quality": "Soft realistic shadows",
    "color_temperature": "Neutral-warm daylight"
  },
  "camera": {
    "angle": "Top-Down / Near Top-Down",
    "focal_length_mm": 50,
    "aperture": "f/5.6",
    "focus_behavior": "Sharp on face and spoon, slight falloff at edges"
  },
  "post_processing": {
    "art_medium": "Photography",
    "style_modifiers": "Hyper-realistic, tabletop product photo, 8K detail look, natural color/contrast"
  },
  "negative": {
    "artifact_suppression": "blur, lowres, CGI/3D look, distorted face, changed identity, extra features, floating spoon, unrealistic reflections",
    "content_excludes": "text, watermark, logo, cups/mugs/plates, hands/people, illustration/cartoon"
  }
}