视觉描述生成指导

下面给出三种极简咖啡馆内景的构图方案，每个方案都是面向Stable Diffusion的可直接使用的正向提示词；文末附通用反向提示词（适用于三种方案），重点规避广角畸变与手部错误。整体风格为现代插画风，暖光，强调几何简化与细腻颗粒质感。

方案一：吧台中景叙事（正常视角，50mm）
正向提示词：
极简咖啡馆内景，现代插画风，扁平而不失层次，几何化简形与柔和颗粒并存；浅色石材吧台如磨砂贝壳，胡桃木台面温润发光，三盏黄铜小吊灯投下蜂蜜般的暖意；画面采用三分法构图，杯子停在黄金分割点，奶泡表面绽开清晰的叶脉拉花，细小蒸汽在暖光里像纱般升腾；咖啡师半身入画，亚麻围裙与袖口纹理清晰，专注而安静，五官与轮廓简化成清爽的几何块面；背景退化为抽象器具的剪影与线条，留白宽阔，动静对照；色盘：奶油白、燕麦米、焦糖棕、哑光炭灰，点缀一抹冷绿的植物影；光线以吊灯暖光为主，窗侧柔和补光，柔软阴影在台面边缘铺开；镜头语汇：正常镜头与眼平视角，轻浅景深但保持杯口与拉花锋利；画幅3:2横版；质感关键词：哑光木纹、细粒石材、陶瓷微光、金属暖反射；干净、克制、静谧、杂志级编辑插画质感，清晰边界与流畅曲线，high detail materials, clean edges, soft gradient, subtle grain

方案二：顶视桌面静物（俯拍，90°俯视）
正向提示词：
极简咖啡馆内景，现代插画风，暖光；直上俯拍的桌面像一张安静的平面构成，浅米色石材台面呈现细腻砂砾纹理，圆形木盘与陶瓷杯在画面中心略偏左，几何重心稳固；卡布奇诺表面的奶泡拉花洁白锋利，边缘带一圈细腻高光，金色小勺在一侧像月牙，亚麻餐巾柔软褶皱呈温和曲线；窗外斑驳的日光透过百叶投下格栅状光影，暖色如晚秋阳；留白充足，构成清晰：大面积静色块+少量高对比细节；色盘：象牙白、浅骆驼、淡蜂蜜、可可棕；镜头语汇：俯视90度、平行线条端正、窄视场避免边缘拉伸，仿正交的平面化观感；画幅1:1或4:5竖幅；质感关键词：平滑陶瓷釉、细颗粒噪点、柔和阴影晕染；插画笔触克制，形体简化但边缘清洁，editorial illustration, flat shapes with soft grain, precise highlights

方案三：窗边卡座的光与静（压缩透视，85mm）
正向提示词：
极简咖啡馆内景，现代插画风，暖光；镜头对向窗边长条卡座，亚麻靠枕与木质坐面形成平行的引导线，远处玻璃窗将城市化作柔和的色块；一束金色侧光斜斜切入，墙上拖出长而温暖的高光带，尘埃在光里像细盐飘浮；前景轻微虚化的一枝尤加利叶剪影，叠出空间层次；中景是桌上一只温热的杯碟与翻开的杂志（抽象几何图形，无文字），纸张边缘带柔亮反光；人物背对而坐，外套搭在肩头，姿态放松，小臂围拢于胸前拥杯但手部细节克制简化，避免成为画面中心；色盘：奶油白、浅橡木、琥珀金、柔雾灰绿；镜头语汇：中长焦压缩视角、水平视线、三分法构图，前景遮挡与窗光形成S形动线；画幅3:2横版；质感关键词：亚麻织理、哑光木孔、温润玻璃反光；插画处理清晰利落、细腻颗粒与柔和渐变勾勒体积，clean shapes, soft glow rim light

通用反向提示词（用于所有方案）
wide angle, ultra wide, fisheye, barrel distortion, strong FoV, perspective distortion, stretched edges, warped lines, tilted horizon, keystone distortion
bad hands, deformed hands, extra fingers, missing fingers, fused fingers, long fingers, disembodied hands, broken wrists, incorrect finger count, malformed limbs
lowres, blurry, noisy, motion blur, overexposed, underexposed, chromatic aberration, color banding, posterization
text, caption, watermark, logo, UI, signature, QR code
duplicate subject, cut off, out of frame, clutter, messy background

使用建议
- 若需要更稳妥的物体边缘与材质，采样步数适中（如28–36），CFG 5–7，分辨率可选768或更高；若出现手部细节仍不稳定，可将“手部不入镜”“袖口遮挡手指”等语句加入正向提示，同时保留上述反向提示。

Primary prompt (copy-paste ready, with replaceable modules)
Summer launch poster main visual for a fruit-flavored sparkling water, vertical layout, clean and airy. A single hero product at center—a clear, dew-kissed bottle or slim aluminum can—beads of condensation glittering like morning frost, effervescent micro-bubbles rising through crystal water. A crown of water splash arcs in a gentle S-curve, elegant and weightless, cradling fresh cut {FLAVOR_FRUITS} whose translucent flesh glows under backlight. Color palette is refreshing and sunlit: cool mint, seafoam, pale aqua, and cloud-white, with a precise accent keyed to the flavor (from the fruit’s skin and juice tone). High-key studio lighting with soft backlight and a crisp rim light, clean specular highlights, no harsh shadows; faint mist in the air and caustic reflections pooling on a glossy white surface. Background drifts from near-white to a whisper of color—a smooth gradient with soft, watery bokeh and delicate ripple hints—leaving generous white space around the product. Composition is minimalist and balanced: strong vertical axis, rule-of-thirds placement for the splash apex, ample negative space at the top-right for headline and at the lower margin for logo and QR code (no actual text). The label area is blank and pristine, slightly glossy, ready for branding. Fine, sparkling fizz threads around the fruit; ice cubes are glass-clear with soft internal refractions. Regional accent layer: {REGIONAL_ACCENT} subtly integrated at low opacity so it feels like a breeze of place, never stealing focus from the product. Ultra-clean, modern, premium beverage advertising aesthetic.

Constraints and layout notes
- Poster ratio: 4:5 or A3 vertical, generous bleed and safe margins, grid-friendly whitespace.
- One hero product only, centered; camera at slight low angle for stature; straight horizon.
- Keep background minimal and uncluttered; prioritize legibility for future typography.

Optional modules to swap per brief
- {FLAVOR_FRUITS}: choose one set per variant, and match the accent color
  - Lemon zest curls + translucent lemon slices (accent: lemon yellow)
  - Grapefruit wedges + pink pomelo pearls (accent: grapefruit blush)
  - Blood orange discs + zest flecks (accent: deep sunset orange-red)
  - Strawberry halves + tiny seeds sparkling (accent: soft berry pink)
  - Mango cubes + golden threads (accent: mango gold)
  - Lychee peeled halves + clear syrupy sheen (accent: pearl rose)
  - Lime wheels + mint sprigs (accent: lime green)
- {REGIONAL_ACCENT}: keep subtle (5–15% opacity), softly abstract, placed along edges or background plane
  - Mediterranean coast: sun-washed ceramic tile motif in pale azure along the lower edge; a soft horizon line of sea and distant white facades; a sprig of rosemary shadow, gentle and diffuse.
  - Tokyo summer: faint yukata textile geometry in icy indigo; out-of-focus paper lantern bokeh dots like floating pearls; a whisper of shaved-ice hues melting into the gradient.
  - Tropical Southeast Asia: delicate banana-leaf shadow pattern; turquoise pool-tile grid receding in perspective; hints of dragon fruit seeds like starry specks.
  - Nordic fjord: silvery mist gradient; minimal geometric “snowmelt” linework; a cool midnight-sun rim glow feathered behind the product.
  - California coastal: soft palm frond shadow; sandy off-white base fading to ocean teal; distant boardwalk lines barely visible.
  - Provence: lavender field haze as a lavender-gray film near the horizon; limestone texture ghosted at 10% in the corner; a bee-wing glint suggestion, abstract and light.
  - Urban minimal: architectural concrete texture at 8–10% opacity; glass reflections suggesting a skylight; crisp shadow lines implying a gallery space.

Negative prompt (to keep the visual clean and premium)
Text, captions, letters, watermarks, brand names, extra logos, people, hands, busy backgrounds, multiple bottles/cans, crooked horizon, warped can or bottle, distorted label, low resolution, muddy colors, oversaturation, harsh shadows, heavy grain, chromatic aberration, motion blur, clutter, plastic-looking fruit, messy splashes, foam scum, stains.

Notes for generation control (optional)
- Style: ultra-clean product photography, high dynamic range but gentle contrast, photoreal with subtle CGI polish.
- Detail emphasis: razor-sharp condensation droplets, crisp fruit texture, fine sparkle in micro-bubbles, smooth gradients without banding.
- Keep the regional accent extremely soft; it should feel like a scent of place rather than a pattern dump.

以下はStable Diffusion向けのプロンプト例です。砂漠の遊侠を、望遠レンズの圧縮感・逆光・飛砂・皮革と旧金属の質感・映画的な空気感で描くことに特化しています。

ポジティブプロンプト
- 砂漠の遊侠、風に焼かれた頬と乾いた眼差し、砂塵で曇ったゴーグル、首元でたなびくスカーフ、風に翻るダスターコート。装束は風化した皮革と古びた金属の混成、ひび割れた革のステッチや擦り切れ、リベットの打痕、黒ずんだ酸化皮膜と鈍い錆の縁、触れれば粉を落とすような乾き。低い太陽の逆光に縁どられ、肩や頬が白金の輪郭光に切り取られるリムライト。飛砂が光を捕まえ、粒子の川が画面を横切る。望遠レンズ（200mm, f/2.8）の圧縮感、浅い被写界深度で背景の砂丘はクリーミーに溶け、被写体だけが刃物のように浮かぶ。ボリュメトリックな光が砂塵に線を描き、地平には陽炎の揺らぎ。革はマットで乾いた手触り、金属は冷たく重い質感と使い込まれた擦傷、微かな煤け。胸上からのタイトなフレーミング、静かに風上を睨む姿、コートの裾が一瞬だけ羽ばたく。映画的ライティング、ハイコントラスト、ドラマチックな陰影、控えめなフィルムグレイン、わずかなアナモルフィックフレア。色調はティール&オレンジのシネマティック・グレーディング。望遠圧縮、逆光、飛砂、砂嵐の前触れ、リムライト、ヒートヘイズ、浅い被写界深度、ボケ、フォトリアリスティック、シネマティック

ネガティブプロンプト
- 低解像度、ピンぼけ、過度なHDR、過飽和、プラスチックのような金属、テカり過ぎの革、モーションブラー過多、魚眼・広角の歪み、樽型歪曲、肌のろう細工感、奇形、余分な指、アーティファクト、二重露光、色収差のにじみ、テキスト・ロゴ・ウォーターマーク、ノイズの帯、雑なエッジ、背景の過剰なディテールが主題と競合する構図