# GPT Image Hub prompt

## Chân dung ngoài trời giữ nguyên khuôn mặt
- URL: https://www.gptimagehub.com/vi/library/identity-locked-outdoor-casual-portrait
- Generator URL: https://www.gptimagehub.com/vi/generate?promptId=oss-ym-mm-4314
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fvi%2Flibrary%2Fidentity-locked-outdoor-casual-portrait
- Category: Chân dung và nhiếp ảnh
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 4:5
- Style: photorealistic
- Tags: chân dung, khóa khuôn mặt, ảnh sang ảnh, ngoài trời, chân thực, cận cảnh
- Updated: 2026-10-26T23:05:18.098Z
- Created: 2026-10-26T23:05:18.098Z

Giữ nguyên các đường nét khuôn mặt từ ảnh tham chiếu để tạo ảnh cận cảnh ngoài trời. Thay đổi phông nền và phong cách trang điểm tùy ý.

### Full prompt
```text
{
  "Objective": "Generate a photorealistic outdoor casual close-up portrait using the provided reference photo with absolute facial identity lock and zero deviation.",
  "Edit_Type": "Image-to-image portrait generation",
  "Input_Image": {
    "Usage": "Primary identity reference",
    "Identity_Lock": "Maximum / absolute",
    "Rules": [
      "Exact same face as the reference photo",
      "No changes to facial structure or proportions",
      "No changes to age or perceived age",
      "No changes to eye shape, lip shape, nose, jawline, or cheek structure",
      "No changes to skin tone, undertone, or natural skin texture",
      "No changes to expression or subtle facial micro-expressions"
    ]
  },
  "Persona_Details": {
    "Subject": "Same individual as the reference photo",
    "Expression": {
      "Type": "[Calm, neutral, natural]",
      "Emotion": "[Relaxed, approachable, authentic]"
    },
    "Makeup": {
      "Style": "[Soft natural makeup]",
      "Coverage": "Minimal, realistic skin finish",
      "Detail": "No glam, no heavy contouring"
    }
  },
  "Scene_and_Environment": {
    "Setting": "[Outdoor casual environment]",
    "Background": {
      "Treatment": "[Softly blurred natural background]",
      "Elements": "[Subtle greenery or neutral outdoor textures]"
    }
  }
}
```