Chuyển Ảnh Thành Poster Vector Tối Giản

{
  "task": "Transform the reference photo into a minimalist vector-style poster.",
  "style": {
    "overall_look": "Flat-design, geometric simplification, minimalist vector art",
    "color_palette": {
      "type": "restricted",
      "description": "Use a reduced palette of [3–6] harmonious colors with clean tonal separation and no gradients.",
      "constraints": [
        "No photorealistic rendering",
        "No texture or noise",
        "Avoid excessive detail"
      ]
    },
    "shapes": {
      "treatment": "Reduce all forms to essential geometric contours and solid flat shapes.",
      "linework": "Clean, even-weight line art or borderless solid color blocks.",
      "abstraction_level": "High abstraction while retaining recognizability of the subject."
    },
    "lighting": {
      "handling": "Flat lighting with hard-edge shadow shapes and solid tonal zones; no soft gradients or complex reflections."
    }
  },
  "subject_preservation": {
    "identity": "Maintain recognizable identity through silhouette, proportions, and key structural landmarks.",
    "essential_details": "Preserve only primary defining contours; eliminate micro-textures, fine hair strands, and fabric wrinkles."
  },
  "composition": {
    "background": "Simplified into [1–2] flat solid color fields or clean geometric backdrop shapes.",
    "hierarchy": "Subject remains the clear focal silhouette against a minimal background."
  },
  "constraints": [
    "Do not alter the core identity or proportions of the subject.",
    "No gradients, 3D shading, brush strokes, or photographic textures.",
    "No added text, watermarks, or extra decorative objects."
  ]
}