# GPT Image Hub prompt

## Remplacement de Visage sur Grille
- URL: https://www.gptimagehub.com/fr/library/expression-grid-identity-swap
- Generator URL: https://www.gptimagehub.com/fr/generate?promptId=oss-ym-mm-10243
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Ffr%2Flibrary%2Fexpression-grid-identity-swap
- Category: Portrait et photographie
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 2:3
- Style: photorealistic
- Tags: grille d'expressions, changement de visage, portrait, planche contact, photomaton, image à image
- Updated: 2026-10-27T21:41:58.098Z
- Created: 2026-10-27T21:41:58.098Z

Transfère l'identité d'un sujet sur une planche de 16 expressions variées. Modifiez le portrait de référence et la grille pour changer de modèle.

### Full prompt
```text
{
  "generation_request": {
    "meta_data": {
      "task_type": "identity_swap_into_existing_expression_grid",
      "version": "v1.0_4x4_expression_grid"
    },
    "input": {
      "mode": "image_to_image",
      "reference_structure_image": "the reference photo showing a [4x4 expression grid]",
      "reference_identity_portrait": "the reference photo of the target person",
      "preserve_identity": true,
      "preserve_facial_features": true,
      "preserve_hairstyle": true,
      "instructions": "Preserve the precise 4x4 grid layout, individual panel cropping, lighting, and simple background from the structure image. Replace the individual across all sixteen panels with the identity from the reference portrait, accurately replicating each panel's facial expression, gaze direction, head tilt, and hand gesture with realistic skin texture and anatomical precision."
    },
    "style": {
      "lighting": "matched to reference grid image",
      "background": "neutral studio background matching reference grid",
      "texture": "natural pore detail, subtle analog film grain, realistic skin rendering"
    },
    "negative_constraints": [
      "distorted hands",
      "extra digits",
      "inconsistent facial features",
      "plastic smooth skin",
      "asymmetrical eyes",
      "text",
      "watermark"
    ]
  }
}
```