# GPT Image Hub prompt

## 하이퍼리얼리스틱 연필 스케치 초상화
- URL: https://www.gptimagehub.com/ko/library/hyper-realistic-pencil-sketch-portrait
- Generator URL: https://www.gptimagehub.com/ko/generate?promptId=oss-ym-mm-2903
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fko%2Flibrary%2Fhyper-realistic-pencil-sketch-portrait
- Category: 포스터 및 일러스트
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 4:5
- Style: painterly
- Tags: 연필스케치, 흑백, 초상화, 하이퍼리얼리즘, 순수미술, 소묘
- Updated: 2026-10-26T18:58:43.098Z
- Created: 2026-10-26T18:58:43.098Z

구조화된 JSON 매개변수를 활용해 정밀한 흑백 연필 소묘 초상화를 생성합니다. 인물 대상, 시선 방향, 조명 설정을 변경해 맞춤 연출이 가능합니다.

### Full prompt
```text
{
  "meta": {
    "image_quality": "High",
    "image_type": "Monochromatic Digital Illustration / Hyper-realistic Pencil Drawing"
  },
  "global_context": {
    "scene_description": "Studio portrait of [a woman]",
    "time_of_day": "Studio setting",
    "weather_atmosphere": "Serene and intimate",
    "lighting": {
      "source": "Studio lighting",
      "direction": "Frontal butterfly lighting",
      "quality": "Soft and diffused",
      "color_temp": "Neutral greyscale"
    }
  },
  "color_palette": {
    "dominant_tones": [
      "Charcoal",
      "Slate Grey",
      "Silver",
      "Deep Black",
      "Pure White"
    ],
    "contrast_level": "Medium"
  },
  "composition": {
    "camera_angle": "Eye-level",
    "framing": "Close-up headshot",
    "depth_of_field": "Shallow with soft focus on hair extremities and background",
    "focal_point": "Subject's eyes and the bridge of the nose"
  },
  "objects": [
    {
      "id": "obj_001",
      "label": "[Female Subject]",
      "category": "Person",
      "location": "Center",
      "prominence": "Foreground",
      "visual_attributes": {
        "color": "Full greyscale tonal range",
        "texture": "Smooth skin, fine hair strands, soft lip texture",
        "material": "Skin and hair",
        "state": "Posed",
        "dimensions_relative": "Occupies roughly 80% of the frame"
      },
      "micro_details": [
        "Individual wisps of flyaway hair catching soft light",
        "Subtle catchlights in the pupils of both eyes",
        "Finely rendered eyelashes and eyebrow hairs",
        "Soft philtrum indentation above upper lip",
        "Subtle graphite shading on neck and collarbones",
        "Smooth pencil gradient transitions on forehead and cheeks"
      ],
      "pose_or_orientation": "[Facing forward, direct eye contact]"
    },
    {
      "id": "obj_002",
      "label": "Background",
      "category": "Environment",
      "location": "Full frame",
      "prominence": "Background",
      "visual_attributes": {
        "color": "Dark grey to mid-grey gradient",
        "texture": "Grainy stippled pencil texture",
        "material": "Fine art sketch paper",
        "state": "Static",
        "dimensions_relative": "Full frame coverage behind subject"
      },
      "micro_details": [
        "Subtle graphite noise and paper grain throughout",
        "Soft vignette in the corners",
        "Subtle lighter halo effect immediately surrounding the head"
      ]
    }
  ]
}
```