万能AI模特生成公式

耳环模特的形象由客户提供，最好是半身特写或者头部特写照。我们要考虑到一张4K的模特图，最终佩戴耳环位置的像素。

这个位置的像素越高，合成后，耳环才越清晰，纹理特征才越完整。

假设上面这张是客户提供给我们的参考图，但客户希望模特的姿势不要这么固化，希望模特姿势更加多样性。

那我们就可以在chatgpt  中上传这张图片，并输入如下提示词，来提取这个模特的特征：

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请认真分析这张照片的：主体内容，整体构图，人物特征（哪国人、人物的长相，穿着，身材骨架、皮肤特征，发型特征[长短、颜色、蓬松度、有无卷曲]，以及其它配饰（比如包包、帽子、佩戴的饰品、发箍、发带、发夹等，请严格按照参考图的特征进行分析），模特的五官特征、身材骨架大小，穿着（衣服的款式、颜色、面料、以及设计细节），都需要清晰定义，不能笼统概括），摄影风格，拍摄场景（需要具体描述照片中的场景内容），拍摄角度（半身照，全身照，上半身特写，胸部以上，膝盖以上视图，左侧视图，右侧视图，正面视图，水平角度拍摄，低角度拍摄……），景别（超广角镜头，中近景、中远景、超近景、大全景、近景、脸部特写，近距离特写……），光线（自然光、散光、柔光、高调光、环形补光……），使用了什么设备（什么品牌的相机？什么样的镜头？），拍摄方案（光圈、快门、焦距、ISO等参数设置），照片质量（8K高清，细节丰富、真实肌理感、高级人像摄影）；

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这样我们就能提取这个模特的特征，等chatgpt 分析完模特特征以后，再接着提问：

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严格遵循以上分析的内容，帮我设计6条更贴合这张图的 Midjourney Prompt。要求：1.整体的拍摄风格，人物特征，拍摄场景，构图要与这张图一致。2.使用相机拍摄，拍摄角度改为水平拍摄，胸部以上特写。3.摄影风格为平面广告摄影，商业摄影。4.模特位于画面中间，左右两侧和头顶预留10%的负空间。5.模特佩戴一枚小小的珍珠耳钉，模特的姿势优雅自然，专业且富余变化，能恰到好处的展示佩戴的珍珠耳钉。6.prompt 用英文描述，一个prompt 就是一个自然段落，除了耳环外模特不要佩戴其它饰品。7.prompt 的结构必须包含以下几部分的内容：主体内容、整体构图、人物特征（这是个年轻的法国模特，穿着黑色吊带连衣裙，吊带可调节长短。其它特征请根据以上分析进行补充）、摄影风格、拍摄场景、拍摄角度、景别、光线、使用的设备（什么牌子的相机？什么样的镜头），相机参数（拍摄模式、光圈、快门、ISO、白平衡等常规参数），输出质量（8K高清，细节丰富、真实肌理感、高级人像摄影）。8.请你从一个专业摄影师的角度，帮我设计这6个prompt 方案，以上分析中未提供的信息，请你从专业的角度帮我补充。

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以上提示词方案，约束条件中第四条，为什么要让模特佩戴小小的珍珠耳钉？

一是：提示词是模特形象、场景、行为模式的综合，让她佩戴珍珠耳钉，是为了生成的模特图能有角度来展示饰品。

二是：小的耳钉，好消除，在后面用PS搭建人台时，会节省很多力气。

最终设计出来的Prompt，如果和我们提供的参考图有较大的差异，那我们可以针对性的修改以上约束条件。比如在人物特征中约束清楚：这是个年轻的法国模特，穿着黑色吊带连衣裙，吊带可调节长短。

这样我们就得到了6个耳环模特的prompt，放到即梦中生成模特图。

Prompt 1

A young French female model in a refined commercial beauty portrait, photographed from the chest up, centered precisely in the frame with 10% negative space on the left, right, and top, wearing a black spaghetti-strap slip dress with adjustable metal strap sliders, no accessories except a single small pearl stud earring clearly visible on one ear; she has a slim small-boned frame, narrow shoulders, elongated neck, defined collarbones, fair cool-toned skin with natural fine texture, a graceful oval face, delicate straight nose, soft almond eyes, light brown brows, naturally shaped muted pink lips, and light ash-brown hair styled into a smooth low chignon with a soft center part, low volume, straight texture, and a few fine wisps around the face; her pose is elegant and understated, with the head turned slightly to the side just enough to present the pearl stud naturally and professionally. Clean plain light gray studio wall background, minimalist indoor commercial set, horizontal framing, eye-level camera angle, chest-up close portrait, flat advertising photography, luxury editorial commercial style, polished but realistic skin, soft natural window-like diffused light from camera left with smooth shadow transition, captured on a Canon EOS R5 with an RF 85mm f/1.2L lens, manual mode, f/4, 1/160s, ISO 125, white balance 5400K, tack-sharp facial detail, realistic skin grain, premium 8K high-definition output, rich subtle detail, sophisticated high-end beauty photography.

Prompt 2

A young French model photographed for a premium flat advertising campaign, chest-up horizontal portrait with the subject placed in the exact center and 10% breathing room on both sides and above the head, wearing a minimalist black slip dress with thin adjustable straps and small silver strap adjusters, no jewelry other than one tiny pearl stud earring intentionally highlighted; her appearance is refined and clean, with a slim small-frame build, elegant neck, visible collarbones, pale luminous skin, a softly elongated oval face, crisp jawline, delicate chin, straight nose bridge, light natural brows, calm almond-shaped eyes, and soft rose-beige lips; her hair is light cool brown, straight, smooth, lightly tucked back into a neat low bun with minimal puffiness and no curls, with a few loose baby hairs for realism; her pose is poised and natural, chin slightly lifted and head subtly angled so the pearl earring catches attention without looking forced. Shot in a simple indoor studio corner against a plain warm light-gray wall, commercial beauty photography, modern print ad style, eye-level horizontal capture, chest-up close shot, soft diffused daylight simulation, high-key but gentle tonal range, photographed on a Sony A7R V with an FE 90mm f/2.8 Macro G OSS lens, manual exposure, f/5, 1/125s, ISO 100, white balance 5200K, ultra-detailed 8K image quality, realistic skin texture, fine hair detail, crisp commercial finish.

Prompt 3

A high-end commercial portrait of a young French woman, framed horizontally from the chest up with the model centered and 10% negative space left, right, and above, styled in a black spaghetti-strap dress with adjustable straps, absolutely no adornment except a small pearl stud earring; she is slender with a delicate small-boned upper body, narrow shoulders, long graceful neck, defined clavicles, porcelain fair skin with true-to-life texture, a clean oval-to-long face shape, subtle cheek structure, neat jawline, fine straight nose, soft neutral lips, pale brown brows, and gentle side-glancing eyes; her hair is ash light brown, smooth and straight, parted softly near the center and secured into a low sleek bun with controlled flyaways and very low volume, preserving a restrained elegant silhouette; her body language is professional and fluid, with one shoulder relaxed and the head turned just enough to elegantly reveal the pearl stud as the visual accent. Minimal indoor set with a seamless plain light gray wall, luxury catalog and print advertising photography, eye-level perspective, horizontal chest-up close portrait, restrained commercial editorial aesthetic, soft broad diffused light from the front-left, mild fill on the shadow side, natural tonal transitions, photographed using a Nikon Z8 and NIKKOR Z 85mm f/1.8 S lens, manual mode, f/4.5, 1/200s, ISO 160, white balance 5300K, 8K ultra-HD output, extremely rich detail, lifelike texture, premium high-fashion portrait quality.

Prompt 4

A young French female model in a minimalist luxury beauty advertisement, captured in a horizontal chest-up composition with the subject centered and consistent 10% negative space on both sides and above the head, wearing a black adjustable-strap slip dress with fine straps and subtle metal sliders, with no accessories except a tiny pearl stud earring that is clearly but naturally displayed; she has a refined slim physique with a small skeletal frame, soft narrow shoulders, pronounced collarbones, a long elegant neck, fair matte skin with realistic pore detail, a graceful elongated oval face, delicate jaw contour, slim straight nose, understated natural brows, clear almond eyes, and muted blush-pink lips; her light brown hair is straight, smooth, and gathered into a low polished bun, center-parted with minimal volume and no visible curl pattern, plus a few fine face-framing wisps; her pose is elegant and composed, turning her head slightly over the shoulder line to showcase the pearl earring in a subtle professional variation. Plain pale gray wall in a quiet indoor studio environment, flat advertising photography, commercial print campaign style, eye-level horizontal shooting angle, chest-up close-up portrait, bright soft diffused light with a clean luxury cosmetic-ad look, shot on a Fujifilm GFX100 II with a GF 110mm f/2 lens, manual mode, f/5.6, 1/125s, ISO 100, white balance 5600K, pristine 8K resolution, rich micro-detail, realistic skin finish, elegant premium portrait photography.

Prompt 5

A sophisticated commercial beauty portrait featuring a young French model, photographed horizontally from the chest up with perfectly centered placement and 10% negative space at the top and both sides, dressed in a black spaghetti-strap dress with adjustable shoulder straps, no adornment except one small pearl stud earring designed to be the sole jewelry focus; her build is slim and delicate with a small bone structure, narrow shoulders, a graceful elongated neck, defined collarbones, luminous fair skin with soft natural texture, a narrow oval face, clean jawline, straight refined nose, balanced almond eyes, light brown natural eyebrows, and soft muted nude-pink lips; her hair is cool light brown, straight and sleek, parted naturally near center and arranged into a low bun with restrained volume, smooth surface, no curls, and a few subtle wisps near the temple and nape; her pose is quiet and elegant, with a gentle head turn and relaxed shoulders, intentionally revealing the pearl stud in a tasteful advertising manner. Shot in a minimalist indoor studio against a simple pale warm-gray wall, high-end flat commercial photography for jewelry and fashion advertising, eye-level viewpoint, chest-up close framing, soft directional diffused daylight aesthetic, smooth shadows and clean tonal separation, captured on a Leica SL2-S with an APO-Summicron-SL 75mm f/2 ASPH lens, manual mode, f/4, 1/160s, ISO 200, white balance 5350K, 8K ultra-clear output, highly detailed skin and fabric rendering, realistic texture, premium editorial-commercial portrait quality.

Prompt 6

A premium print-ad style portrait of a young French woman, chest-up horizontal composition with the model in the middle of the frame and exactly 10% negative space on the left, right, and above, wearing a black slip dress with thin adjustable straps and discreet metal hardware, with no accessories other than a tiny pearl stud earring prominently yet elegantly visible; she has a slim petite-boned upper body, narrow shoulders, long swan-like neck, visible collarbones, very fair neutral-cool skin with authentic fine texture, a refined long oval face, sculpted but soft jawline, delicate straight nose, subtle almond eyes looking slightly off-camera, light soft brows, and naturally tinted pink-beige lips; her light ash-brown hair is smooth, straight, and neatly secured into a low chignon, center-parted, close to the head, low in volume, non-curly, with a few fine loose strands for realism; her pose is poised and serene, slightly rotating the face and ear toward the camera to present the pearl stud with graceful variation and professional control. Minimal plain light-gray interior background, commercial advertising photography, luxury flat beauty campaign, eye-level camera position, chest-up close portrait, soft studio-diffused naturalistic light with a clean high-end magazine feel, photographed on a Hasselblad X2D 100C with an XCD 90mm lens, manual mode, f/4.5, 1/125s, ISO 64, white balance 5500K, ultra-premium 8K HD quality, rich detail, true skin texture, elegant high-end commercial portrait rendering.

第二步：在即梦中验证模特生成效果

打开即梦，进入生图界面，选择图片生成。

生图模型选择4.5  ，我偏好选择4.5，4.5 的人像平面感更强，人物一致性也更好，色彩更鲜艳。

5.0 Lite  更偏向实拍，模特肌理感更好，提示词的遵循度更高，但生成的时间相对长一点。

然后点击这里设置图片参数，你可以根据客户的需求设置出图比例和分辨率，我这里设置图片比例为3：4 ，分辨率选2k 。

选低一点的分辨率是方便我们快速出图，然后匹配你需求的模特，你再进行放大处理。这样效率和经济性上更划算。因为直出4K图消耗的算力多，时间长。

出完图后，我们觉得设计出来的风格和参考图偏差较大怎么办？

如果你设计人像的经验比较丰富，你可以选择自己调整提示词。但是一般的有效率的方案是，哪里不满意，直接让Ai帮我们优化，比如刚刚的六个提示词方案有如下几点不满意：

1.模特没有佩戴发箍，请根据参考图风格进行补充。

2.模特的发型特征不对，请严格参照参考图的发型特征重新设计prompt。

3.背景风格和参考图偏差较大，请严格参照参考图的背景特征，重新设计prompt 。

归纳以上几点，继续在chatgpt 中输入如下提问句式：

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你刚刚设计的6个prompt 方案有如下几点不满意：1.参考图中模特有佩戴发箍，而你给我的提示词没有相关描述。2.模特的发型特征不对，不是低盘发，更像是隐藏式盘发，看不到发尾和丸子。3.背景风格和参考图的背面风格偏差较大，参考图的背景是纯色背景，颜色较浅、低饱和度低亮度的柔和背景。请根据我新补充的需求，重新设计6个prompt 方案。

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经过几轮优化，这个方案最接近我的需求：

A young French female model with a clean, innocent Parisian aesthetic, creamy skin and ethereal softness, photographed in a luxury commercial beauty portrait, chest-up horizontal composition, perfectly centered with 10% negative space around, wearing a black spaghetti-strap dress with adjustable straps and a slim black crystal-beaded headband, only jewelry is a small pearl stud earring; she has a petite slender build, small bone structure, narrow shoulders, elongated neck, delicate collarbones, smooth creamy fair skin with soft glow and minimal texture, an elegant oval face, soft jawline, fine straight nose, light eyebrows, relaxed almond-shaped eyes, natural pale lips; her light brown hair is straight, sleek, low-volume, center-parted and tucked into a concealed pinned hairstyle with no visible bun or curls, soft flyaways enhancing realism; her pose is serene and poetic, gently turning her head to subtly highlight the pearl earring. Soft light gray low-saturation solid background, clean studio environment, flat commercial photography, luxury advertising aesthetic, eye-level horizontal shot, chest-up close-up, soft diffused frontal lighting, smooth tonal gradients, shot on Nikon Z8 with 85mm f/1.8 lens, manual mode, f/4, 1/200s, ISO 160, white balance 5400K, ultra-detailed 8K output, dreamy skin texture, refined commercial portrait quality.

第三步：模特筛选扩图高清放大

上面我们选中的这个模特方案，模特左右两侧留白空间不够，我们可以将鼠标放在想要的模特图上。

会出现一个扩图的icon。

点击这里对图片进行扩展，这里选择1:1扩展，如果你觉得扩展的背景留白还不够，可以拖动方框，继续留白。

调整好以后，点击3的位置运行即可。

1:1 扩展后的模特就是这样的，我们可以点击查看大图效果。

然后用消除笔，涂抹你要消除的内容，这里涂抹耳环佩戴的区域和阴影。因为后面我们要将客户的耳环佩戴到这里。

虽然PS 也有消除功能，但即梦自带的消除功能可以对皮肤肌理进行重绘，消除后的区域不会模糊。

消除完以后，鼠标放在模特上，点击超清 icon 对图片进行放大。

放大后，下载保存到本地。