# GPT Image Hub prompt

## 超寫實鉛筆素描肖像
- URL: https://www.gptimagehub.com/zh-TW/library/hyper-realistic-pencil-sketch-portrait
- Generator URL: https://www.gptimagehub.com/zh-TW/generate?promptId=oss-ym-mm-2903
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fzh-TW%2Flibrary%2Fhyper-realistic-pencil-sketch-portrait
- Category: 海報與插畫
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 4:5
- Style: painterly
- Tags: 鉛筆素描, 黑白單色, 肖像, 超寫實, 純藝術, 手繪
- Updated: 2026-10-26T18:58:43.098Z
- Created: 2026-10-26T18:58:43.098Z

運用結構化 JSON 參數生成細節精緻的單色鉛筆素描肖像。可自訂人物主體、視線方向或光影配置來呈現不同風格。

### Full prompt
```text
{
  "meta": {
    "image_quality": "High",
    "image_type": "單色數碼插畫 / 超寫實鉛筆素描"
  },
  "global_context": {
    "scene_description": "[一位女性]的影棚肖像",
    "time_of_day": "攝影棚環境",
    "weather_atmosphere": "靜謐而親密",
    "lighting": {
      "source": "影棚燈光",
      "direction": "正面蝴蝶光",
      "quality": "柔和漫射",
      "color_temp": "中性灰度"
    }
  },
  "color_palette": {
    "dominant_tones": [
      "炭黑",
      "板岩灰",
      "銀灰",
      "深黑",
      "純白"
    ],
    "contrast_level": "中等"
  },
  "composition": {
    "camera_angle": "平視視線高度",
    "framing": "特寫頭部肖像",
    "depth_of_field": "淺景深，髮絲邊緣與背景虛化",
    "focal_point": "主體的雙眼與鼻樑"
  },
  "objects": [
    {
      "id": "obj_001",
      "label": "[女性主體]",
      "category": "人物",
      "location": "居中",
      "prominence": "前景",
      "visual_attributes": {
        "color": "完整灰度色階",
        "texture": "細膩肌膚、根根分明的髮絲、柔軟唇部質感",
        "material": "皮膚與頭髮",
        "state": "擺拍姿態",
        "dimensions_relative": "佔據畫面約80%空間"
      },
      "micro_details": [
        "捕捉到柔和微光的細微碎髮",
        "雙眼瞳孔中的微弱眼神光",
        "細緻描繪的睫毛與眉毛",
        "上唇上方柔和的人中陰影",
        "頸部與鎖骨處細膩的石墨鉛筆陰影",
        "額頭與臉頰處平滑的鉛筆漸變過渡"
      ],
      "pose_or_orientation": "[正視前方，眼神直視鏡頭]"
    },
    {
      "id": "obj_002",
      "label": "背景",
      "category": "環境",
      "location": "全畫幅",
      "prominence": "背景",
      "visual_attributes": {
        "color": "深灰至中灰漸變",
        "texture": "細膩點描鉛筆肌理",
        "material": "藝術素描紙質感",
        "state": "靜態",
        "dimensions_relative": "主體後方的完整畫面覆蓋"
      },
      "micro_details": [
        "遍佈畫面的微細鉛筆顆粒與紙張紋理",
        "四角柔和的暗角效果",
        "緊鄰頭周柔和的淺色光暈效果"
      ]
    }
  ]
}
```