# GPT Image Hub prompt

## Bản thiết kế sinh trắc học cho ảnh selfie điện thoại
- URL: https://www.gptimagehub.com/vi/library/candid-smartphone-portrait-biometric-blueprint
- Generator URL: https://www.gptimagehub.com/vi/generate?promptId=oss-ym-mm-1549
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fvi%2Flibrary%2Fcandid-smartphone-portrait-biometric-blueprint
- Category: Chân dung và nhiếp ảnh
- Model: nanobananapro
- Aspect ratio: 4:5
- Style: photorealistic
- Tags: chân-dung, selfie, sinh-trắc-học, chân-thực, tự-nhiên, thường-ngày
- Updated: 2026-10-26T18:03:13.098Z
- Created: 2026-10-26T18:03:13.098Z

Tạo ảnh selfie camera trước chân thực với chi tiết sinh trắc học và chất liệu vải tỉ mỉ. Thay đổi tuổi, chữ trên áo hoặc kiểu tóc để tùy biến nhân vật.

### Full prompt
```text
{
  "meta_data": {
    "crop_tightness": "Waist-up portrait, subject seated",
    "image_fidelity": "Moderate grain visible in shadow areas, soft focus typical of front-facing smartphone camera indoors"
  },
  "subject_mapping": {
    "biometric_anchors": {
      "apparent_age_precise": "[Late teens to early 20s]",
      "ethnicity_specifics": "Fair to light tan skin tone with warm undertones; freckling present on nose bridge and cheeks",
      "body_mass_distribution": "Slender build, prominent clavicles visible, soft tissue distribution on upper arms consistent with relaxed posture"
    },
    "face_inventory": {
      "asymmetry_notes": "Subject's head tilted slightly to their right. Subject's right eyebrow appears slightly lower than the left. Upper lip peak slightly sharper on subject's right side.",
      "dermatological_map": [
        "Cluster of light freckles across the bridge of the nose and extending to upper cheeks",
        "Slight redness/flushing on cheeks and nose tip",
        "Smooth texture on forehead with high reflectivity"
      ],
      "eye_details_precise": "Light green/hazel irises. Catchlights present in the upper-right quadrant of both pupils. Dark, defined lash line, subtle mascara.",
      "mouth_state_precise": "Lips parted approximately 3-5mm. Upper central incisors visible. Lower lip full with glossy finish reflecting light centrally."
    },
    "hair_strand_analysis": {
      "root_status": "Uniform dark brown/black at roots, consistent with ends.",
      "chaos_inventory": "Micro-bangs cut bluntly above eyebrows. Several stray flyaways projecting from the crown against the beige wall. Strands curving inward touching jawline on both sides.",
      "contact_points": "Hair rests on the back of the neck and drapes over the top of the couch cushions behind the head."
    },
    "torso_mechanics": {
      "posture_gravity_effect": "Subject leaning back into soft couch cushions, causing slight forward rounding of shoulders. Neck slightly compressed due to backward lean.",
      "chest_topography": "Fabric stretched taut across bust line with soft gradient shadows indicating contour. High crew-neck cut.",
      "skin_surface_inventory": "Prominent suprasternal notch at hollow of throat. Smooth skin texture on exposed arms and chest."
    }
  },
  "attire_inventory_and_physics": {
    "layer_1_top": {
      "item_identity": "[White cropped baby tee with graphic text]",
      "material_weave": "Cotton jersey, lightweight, slightly semi-sheer",
      "stress_and_fold_mapping": [
        "Horizontal tension wrinkles pulling from armpits across upper chest",
        "Diagonal folds on torso fabric from relaxed seating posture",
        "Natural bunching along waistband"
      ]
    }
  }
}
```