儿童宽松短裤改版 — AI 绘图迭代记录

2026-02-10 6 轮迭代 最终版本 v6

任务起点

原始参考图 原始参考图

改版需求

保留宽松版型,裤长到膝盖上方,减少褶皱

保留宽松版型
裤长到膝盖上方
减少褶皱

迭代时间线

V1 — 初版 12:04
Ultra 高清 1:1 参考原图

保持参考图中宽松短裤的所有元素不变(颜色、面料、背景、平铺展示角度)。只做两处修改:裤长调整到膝盖上方,减少面料上的褶皱使其看起来更平整挺括,同时保持宽松廓形。

Keep the same loose-fit shorts exactly as shown in the reference image, same color, same fabric, same background, same flat-lay presentation angle. Only make two changes: adjust the pants length to end above the knee, and reduce the wrinkles and creases on the fabric to make it look smoother and more structured while maintaining the relaxed silhouette.

V1 生成结果
V2 12:10
Ultra 高清 1:1 参考原图

保持参考图中儿童宽松短裤的所有元素不变(颜色、面料、背景、平铺展示角度),保持儿童的尺寸和比例。只做两处修改:裤长调整到膝盖上方,减少面料褶皱使其更平整挺括,同时保持儿童宽松廓形。

Keep these children's loose-fit shorts exactly as shown in the reference image, same color, same fabric, same background, same flat-lay presentation angle, maintaining the children's sizing and proportions. Only make two changes: adjust the pants length to end above the knee, and reduce the wrinkles and creases on the fabric to make it look smoother and more structured while keeping the relaxed children's silhouette.

V2 生成结果
V3 12:20
Ultra 高清 1:1 参考原图

保持参考图儿童宽松短裤所有元素不变(颜色、面料、背景、平铺展示角度),保持儿童尺寸和比例。裤脚口必须保持宽松,不能收窄——保持原图的直筒宽松廓形。只做两处修改:裤长到膝盖上方,减少褶皱使面料更平整。

Keep these children's loose-fit shorts exactly as shown in the reference image, same color, same fabric, same background, same flat-lay presentation angle, maintaining the children's sizing and proportions. The leg opening must remain wide and loose, not tapered or narrow — keep the same relaxed straight-leg silhouette as the original. Only make two changes: adjust the pants length to end above the knee, and reduce the wrinkles and creases on the fabric to make it look smoother and more structured.

V3 生成结果
V4 12:26
Ultra 高清 1:1 参考 V3

保持参考图儿童宽松短裤所有元素不变。裤脚口必须非常宽大松弛,甚至比原图更宽——超大廓形直筒剪裁,完全不收窄。只做两处修改:裤长到膝盖上方,减少褶皱使面料更平整。

Keep these children's loose-fit shorts exactly as shown in the reference image, same color, same fabric, same background, same flat-lay presentation angle, maintaining the children's sizing and proportions. The leg opening must be very wide and relaxed, even wider than the original — an oversized, boxy straight-leg cut with no tapering at all. Only make two changes: adjust the pants length to end above the knee, and reduce the wrinkles and creases on the fabric to make it look smoother and more structured.

V4 生成结果
V5(重做) 12:41
Ultra 超清 1:1 参考原图

保持参考图儿童宽松短裤所有元素不变,特别是面料材质和纹理必须与原图一致。裤脚口必须非常宽大——超大廓形直筒剪裁,完全不收窄。减少褶皱,去掉裆部和膝盖区域的明显堆叠和深褶,保留少量自然折痕。裤长到膝盖上方。

Keep these children's loose-fit shorts exactly as shown in the reference image, same color, same fabric texture and material, same background, same flat-lay presentation angle, maintaining the children's sizing and proportions. The leg opening must be very wide and relaxed — an oversized, boxy straight-leg cut with no tapering at all. The fabric texture and material must remain identical to the original. Make the fabric appear smoother with fewer wrinkles and creases, reducing heavy bunching and deep folds especially around the crotch and knee area, while keeping a few natural subtle folds. Adjust the pants length to end above the knee.

V5 生成结果
V6 — 最终版 12:44
Ultra 超清 1:1 参考原图

保持参考图儿童宽松短裤所有元素不变,面料材质纹理与原图一致。裤脚口非常宽大,超大廓形直筒不收窄。减少褶皱,去掉明显堆叠和深褶,保留少量自然折痕。裤长必须短——在膝盖上方结束,大腿中部到膝盖上方的长度,不能到达或超过膝盖。

Keep these children's loose-fit shorts exactly as shown in the reference image, same color, same fabric texture and material, same background, same flat-lay presentation angle, maintaining the children's sizing and proportions. The leg opening must be very wide and relaxed — an oversized, boxy straight-leg cut with no tapering at all. The fabric texture and material must remain identical to the original. Make the fabric appear smoother with fewer wrinkles and creases, reducing heavy bunching and deep folds especially around the crotch and knee area, while keeping a few natural subtle folds. The pants length must be short — ending well above the knee, like mid-thigh to slightly above the knee, not reaching or going past the knee.

V6 生成结果

关键发现

AI 容易丢失画面中的人物主体

原图是儿童穿着裤子的场景,V1 直接丢失了人物,只生成了裤子平铺图。prompt 中没有显式强调保留人物,模型就可能把人物去掉。

首句锁定完整场景:人群 + 穿着状态 + 品类(如 children wearing loose-fit shorts),不能只描述服装本身
「宽松」需要极端用词才能生效

v2 说 loose-fit 裤脚仍收窄,v3 说 wide and loose 仍不够。直到 v4 用了 oversized, boxy, no tapering at all 这种极端描述才到位。

AI 对程度词不敏感,要用极端/夸张的描述才能达到「正常」效果。想要宽松就说 very wide, oversized, boxy;想要短就说 well above the knee, mid-thigh。
二次 AI 图迭代会严重劣化质量

v5 首次尝试基于 v4(AI 生成图)再改图,结果画质明显下降、细节丢失。AI 图本身就有瑕疵,叠加生成会放大问题。

永远基于原始参考图迭代,不要拿 AI 生成的图当参考图再改。每次都从原图出发,在 prompt 上累积修改。
多个修改点同时描述时,模型会顾此失彼

v5 加强了褶皱描述后裤长变长了,说明模型在处理多个约束时会互相干扰,强调 A 可能导致 B 偏移。

每个修改点都要给出明确、具体的约束,不能只说「above the knee」,要说「well above the knee, mid-thigh to slightly above the knee, not reaching the knee」。越具体越不容易被其他描述冲掉。
材质保真需要显式声明

不写 fabric texture and material must remain identical,模型可能改变面料质感。

改图场景下,所有不想变的元素都要显式写出来,尤其是材质、纹理这类容易被忽略的属性。

Prompt 写作规则

  • 1 首句锁定:人群 + 品类 + 参考图关系(如 children's loose-fit shorts exactly as shown in the reference)
  • 2 不变项全列:颜色、面料材质、背景、角度、尺寸比例,逐一点名
  • 3 修改项用极端词:想要宽松用 oversized/boxy,想要短用 well above/mid-thigh,想要平整用 smoother/flatter/crisp
  • 4 禁止否定词:不说 no wrinkles,说 smoother with fewer wrinkles;不说 not long,说 short ending well above the knee
  • 5 服装图用 Ultra 超清:保留面料纹理细节,其他图 Ultra 高清即可
  • 6 永远基于原图迭代:不拿 AI 生成图当参考图二次生成