Lab / Templates / Pencil Sketch Portrait Template

Pencil Sketch Portrait Template

JSON-structured prompt → 真 graphite-on-paper portrait · 7 anchor 全 honor (subject/pose/hair/clothing/medium/strokes/paper grain) · production-grade illustration · gift / commission / SNS / brand

项目内首验证 2026-05-01 · pure T2I · JSON-structured prompt + 7 anchor. 关键发现 · '8k highly detailed' anchor 与 'visible pencil strokes' 不冲突 · 模型解读为 'highly detailed PENCIL work' · 不是推回 polish. Framework insight · medium transform (pencil/watercolor/oil) ≠ anti-polish (diary/amateur). 前者 model prior 强 · 好做 · 后者 model prior 弱 · 需 EXTREME anchor 才破 (见 templates-pathetic-redraw vs signature-snapshot-candid 对比). 待跑变体 · (a) 加 yuan_kid ref 测 personalization 路径 · (b) 换 medium (watercolor/charcoal/oil) 验证 medium-transform 跨 medium 同样强.

observed_once · ¥0.5 · aspect 1:1 · providers · gpt_image_2 · id · templates-pencil-sketch-portrait
Pencil Sketch Portrait Template
sample · experiments/pencil_sketch_test/pencil_sketch_v1.png
Run Record
2026-05-01T07:10:16+08:00
✓ pass¥0.537.8s wall· 3.1MB
provider · gpt_image_2 (apimart) · aspect_ratio=1:1 · size=1:1 · n=1
prompt · inline (no library entry · 514 chars)
refs · none (pure T2I)
task_id · task_01KQGAFC6ZQ60BXF0T3ANCSF1V
script · experiments/pencil_sketch_test/test_v1.py
view full sidecar yaml
date: '2026-05-01T07:10:16+08:00'
result: pass
prompt:
  text: |-
    {
      "subject": "Young woman with a gentle smile resting her chin on her hand",
      "hair_style": "High messy bun with wispy loose strands",
      "clothing": "Ribbed knit cozy sweater",
      "medium": "Pencil sketch, graphite on paper",
      "art_style": ["Hand-drawn", "Fine line art", "Soft realistic shading"],
      "color_palette": "Monochrome, greyscale",
      "lighting": "Soft natural lighting, subtle shadows",
      "technical_details": "8k resolution, highly detailed eyes, textured paper background, visible pencil strokes"
    }
refs: []
provider:
  id: gpt_image_2
  relay: apimart
  config:
    aspect_ratio: '1:1'
    size: '1:1'
    'n': 1
output:
  path: ./pencil_sketch_v1.png
  bytes: 3287334
  wall_seconds: 37.8
  task_id: task_01KQGAFC6ZQ60BXF0T3ANCSF1V
script: experiments/pencil_sketch_test/test_v1.py
cost_yuan: 0.5
notes: >-
  Medium transformation test · JSON-structured prompt · pure T2I · test whether 'graphite on paper /
  visible pencil strokes / textured paper' produces authentic sketch OR polished digital
  illustration mimicking sketch. Internal anchor conflict: '8k resolution / highly detailed eyes'
  pulls polish · 'visible pencil strokes / textured paper' pulls authentic sketch. Compare with
  templates-pathetic-redraw (anti-polish extreme) and signature-snapshot-candid (anti-polish
  moderate · partial fit).
prompt not yet extracted to library
Verbatim prompt lives in the experiment script. Pending migration to recipes/image_gen/gpt_image_2/prompts/.

Cross-Reference

methodology · — no dedicated recipe doc · referenced in memory only —
axis · §Templates · 参数化 prompt 产品 · 用户填占位符 / 加 ref · 商业化路径明确 · 商务头像 / NYC 旅行 / GRWM 等

Sister capabilities · same axis

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