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Image2 → 香蕉 2.1 重建 2K/4K 对比(用户提示词 v2)

← 分组 177 文档(GPT基地 + 香蕉2.1 High) · English guide · 与 GPT Image 2.5 Flare / Sunburst 4K 对比

本页为 2026-10-17 的测试对比,重建阶段为当时版本(仅原图 + 通用保真提示词);分组 177 现行重建逻辑另附用户提示词与参考图,效果以实际返回为准。

2026-10-17 · 2 号站 · 分组 75(gpt-image-2,请求 1K 尺寸)→ 分组 139(gemini-nano-banana-2.1 原生 generateContent,参考图 + 保真重建提示词,thinkingLevel=High)。每次调用仅提交一次,无重试;18 次全部 HTTP 200。

链路结果

案例档位image2 原图香蕉输出与原图 PSNR(缩回原尺寸)平均色偏(最大通道)香蕉耗时 sthoughts tokens
1. 1/7 手办 + ZBrush + 包装盒(参考 #3 输出)2K2048×13652528×169621.4 dB3.226.460
1. 1/7 手办 + ZBrush + 包装盒(参考 #3 输出)4K2048×13655056×339221.2 dB5.441.620
2. 芙莉莲今日運勢(繁中排版)2K1365×20481696×252816.1 dB2.735.660
2. 芙莉莲今日運勢(繁中排版)4K1365×20483392×505616.4 dB3.452.990
3. 动漫花束(初春)2K1536×10242528×169619.8 dB2.729.120
3. 动漫花束(初春)4K1536×10245056×339219.8 dB4.743.170
4. 产品逆向解体(手表)2K2048×13652528×169622.1 dB3.631.170
4. 产品逆向解体(手表)4K2048×13655056×339221.4 dB6.234.860
5. 韩系泪痕人像(参考 #7 输出)2K1024×15361696×252829.5 dB2.522.410
5. 韩系泪痕人像(参考 #7 输出)4K1024×15363392×505629.0 dB4.139.610
7. 韩系时尚 moodboard2K1024×15361696×252820.7 dB1.928.40
7. 韩系时尚 moodboard4K1024×15363392×505620.7 dB3.141.020

PSNR 只衡量构图/颜色漂移(越高越贴近原图),不衡量清晰度。香蕉 3:2/2:3 输出比例为 1.4906,与 1.5 有约 0.6% 形变,会略压低 PSNR。

重建提示词

Re-render this exact image at higher resolution. This is a faithful upscale, not a new image. Keep the composition, framing, camera angle, every character, object and text element in the same position, and all text spelled exactly as shown. Preserve the original art style, medium, line work, brush or print texture, film grain, color grading, saturation and lighting exactly; do not make it smoother, more photographic or more stylized. Only add resolution-appropriate fine detail and cleaner edges. Do not add, remove or move anything.

1. 1/7 手办 + ZBrush + 包装盒(参考 #3 输出)

image2 原图 2048×1365,47.74 秒,参考图来自 p3-anime(/v1/images/edits) · 原图 · Lanczos 4K · 香蕉 2K · 香蕉 4K

生图提示词
create a 1/7 scale commercialized figure of thecharacter in the illustration, in a realistic styie and environment.Place the figure on a computer desk, using a circular transparent acrylic base without any text.On the computer screen, display the ZBrush modeling process of the figure.Next to the computer screen, place a BANDAl-style toy packaging box printedwith the original artwork.

包装盒文字 花咲く、あの夏の日 4K 帧 100% 裁切 1466×509

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

手办面部与花冠 4K 帧 100% 裁切 758×746

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

ZBrush 屏幕 4K 帧 100% 裁切 1820×1322

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

2. 芙莉莲今日運勢(繁中排版)

image2 原图 1365×2048,32.62 秒 · 原图 · Lanczos 4K · 香蕉 2K · 香蕉 4K

生图提示词
角色葬送的芙莉莲主角,就能抽出專屬今日運勢,從大吉到大凶都有機會出現,運勢好壞真實不打折,角色還會配合結果做出對應的表情與反應。固定包含X運勢與PixAI生成運,並隨機搭配戀愛運、工作運、金錢運、健康運、人際運、幸運色、幸運物等項目,每項星等高低不同,畫面走可愛雜誌排版風,每次生成都不一樣,很適合分享到社群。

大吉 区块小字 4K 帧 100% 裁切 1458×960

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

戀愛運卡片 4K 帧 100% 裁切 1153×657

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

主角面部 4K 帧 100% 裁切 1357×960

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

底部 Q 版对话框 4K 帧 100% 裁切 2035×1011

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

3. 动漫花束(初春)

image2 原图 1536×1024,36.19 秒 · 原图 · Lanczos 4K · 香蕉 2K · 香蕉 4K

生图提示词
anime_style, highly polished anime artwork, clean and bold lineart, polished cel shading, strong light and shadow separation, clean shadow shapes, dimensional character rendering, strong three-dimensional depth, polished digital painting, vibrant colors, realistic depth, highly detailed background, atmospheric scene, detailed eyes, cinematic angle, tky_chatgpt_anime_boost_color_detail_line_anime_quality, Anime screencap, (Anime coloring:1.5), source_anime, semireal style, anime rendering, (semi-painterly anime rendering, real skin, high contrast, highly refined details, rich saturated colors, deep vibrant colors), blur background, simple background, delicate anime style, semi-realistic, watercolor texture, fine line art, soft coloring, glassy eyes, subtle sheen, pastel tones, dreamy atmosphere, 自然豊かな風景:stunning natural scenery, landscape, flower, uiharu kazari, short hair, head wreath, black hair, school uniform, sakugawa school uniform, hair ornament, summer uniform, serafuku, brown eyes, long hair, hair flower, skirt, brown hair, tokiwadai school uniform, twintails, sweater vest, shirt, neckerchief, blue eyes, medium hair, sailor collar, bow, pleated skirt, red neckerchief, white shirt, enhance the flowers on the head, a large bouquet of gratitude in hands, cute pose, the center character is large, ultra-wide angle, eyes are moist, tilting the neck slightly, in the back, Saten Ruiko and Shirai Kuroko are watching with smiles, flowers in full bloom all around

主角面部与花冠 4K 帧 100% 裁切 1871×1696

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

花束 4K 帧 100% 裁切 2528×1526

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

背景人物 黑子 4K 帧 100% 裁切 1264×1119

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

4. 产品逆向解体(手表)

image2 原图 2048×1365,19.75 秒 · 原图 · Lanczos 4K · 香蕉 2K · 香蕉 4K

生图提示词
[PRODUCT] reassembling in midair from scattered pieces, reverse-disintegration effect, mechanical precision, each component suspended at a different depth, dark void background, high-concept product advertising, cinematic VFX.

表盘文字 4K 帧 100% 裁切 809×1221

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

表圈刻度 4K 帧 100% 裁切 910×1866

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

表冠与表链 4K 帧 100% 裁切 1264×1018

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

5. 韩系泪痕人像(参考 #7 输出)

image2 原图 1024×1536,53.57 秒,参考图来自 p7-moodboard(/v1/images/edits) · 原图 · Lanczos 4K · 香蕉 2K · 香蕉 4K

生图提示词
Use the uploaded portrait as the identity reference for the subject's face, hairstyle, facial structure, skin tone, expression, and overall impression.

Create a high-quality realistic emotional portrait of the same person with a soft sad mood and visible tears.

Core concept:
- a delicate, emotionally touching close-up portrait
- the subject looks quietly sad, as if holding back emotions
- the mood should feel fragile, intimate, soft, and beautiful
- the image should feel like a polished Korean-style emotional portrait

Identity:
- preserve the subject's recognizable identity
- keep the same face shape, eyes, nose, lips, jawline, hairstyle, and overall vibe
- do not make the face look generic or overly different
- keep the beauty natural and believable

Expression:
- slightly sad expression
- soft watery eyes
- one or two visible tear streaks running down the cheek
- lips softly closed or slightly parted
- emotional but restrained, not exaggerated
- the sadness should feel quiet, longing, and delicate

Styling:
- long dark hair with soft natural texture
- a few loose strands falling across the face
- clean natural makeup
- luminous skin
- simple dark top or minimal clothing visible
- overall styling should remain clean and understated so the face is the focus

Lighting:
- soft, moody lighting
- gentle highlights on the eyes, nose, lips, and tear tracks
- subtle shadow depth
- dark or muted background
- the lighting should feel intimate and cinematic, not harsh

Composition:
- vertical portrait composition
- close-up framing
- place the face in the upper half of the frame
- the center of the face should sit slightly above the vertical midpoint
- the eyes should fall around the upper-middle area of the image
- avoid placing the face too low in the frame
- keep the composition visually balanced and elegant

Mood and style:
- Korean emotional beauty portrait
- soft, melancholic, dreamy, intimate
- elegant and photogenic
- emotionally expressive without looking dramatic
- beautiful but slightly heartbreaking

Important visual priority:
- preserve identity clearly
- the face must remain the main focus
- tears should be visible but subtle
- expression should feel naturally sad and emotionally convincing
- the portrait should look beautiful, soft, and emotionally immersive

Negative prompt:
- no exaggerated crying
- no distorted face
- no cartoon style
- no anime style
- no harsh flash
- no messy background
- no over-retouched plastic skin
- no exaggerated smile
- no low-resolution image
- no text
- no watermark

双眼 4K 帧 100% 裁切 2374×910

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

泪痕 4K 帧 100% 裁切 950×1163

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

唇部 4K 帧 100% 裁切 1018×657

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

7. 韩系时尚 moodboard

image2 原图 1024×1536,33.0 秒 · 原图 · Lanczos 4K · 香蕉 2K · 香蕉 4K

生图提示词
Create an ultra-realistic luxury fashion moodboard poster in a premium Korean editorial magazine style. A beautiful young woman stands elegantly in the center wearing a flowing ivory floral chiffon maxi dress with layered translucent fabric, tiny embroidered flowers, delicate lace trims, and soft movement in the fabric. Over it she wears a textured handmade mustard crochet cardigan with oversized sleeves and cozy vintage stitching details. She has long voluminous dark wavy hair with soft curtain bangs, glowing radiant skin, glossy peach makeup, subtle freckles, soft shimmer eyelids, glossy nude lips, and delicate gold jewelry including layered necklaces, pearl rings, and slim bracelets. She wears elegant cream lace-up heels and carries a handcrafted crochet tote bag decorated with sunflower charms, daisy patches, mini ribbons, tiny plush keychains, and aesthetic beads.
The background is a bright warm editorial studio with creamy beige gradients, golden sunlight rays, subtle shadows, soft reflections, floating dust particles, and dreamy glowing highlights. The layout should feel like a realistic Pinterest luxury collage board with clean spacing and balanced composition.
Around the character include many small scrapbook-inspired collage sections:

– close-up beauty portraits

– sunflower photography

– perfume bottle flatlays

– jewelry editorials

– cozy café lifestyle moments

– fashion accessories

– handwritten diary pieces

– soft fabric texture swatches

– vintage books

– coffee cups

– aesthetic shoes

– makeup close-ups

– hair inspiration photos

– dried flower arrangements

– cute doodles and tiny heart sketches

– polaroid-style frames

– paper tape pieces

– editorial magazine snippets
Typography should be very small, elegant, subtle, and blended naturally into the layout like luxury fashion magazine captions. Use tiny serif text such as: “golden aura”, “soft bloom”, “editorial notes”, “mood archive”, and “daily elegance”. Text must never dominate the image.
Overall aesthetic: warm, feminine, luxurious, ultra detailed, realistic photography, soft dreamy atmosphere, premium Korean fashion magazine moodboard, cinematic lighting, highly aesthetic Pinterest composition, rich textures, airy and bright color palette.

左上拼贴与小字 4K 帧 100% 裁切 1696×910

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

人物面部 4K 帧 100% 裁切 814×657

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

包与挂件 4K 帧 100% 裁切 848×911

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)

手写文字 Better Things 4K 帧 100% 裁切 678×758

image2 原图(最近邻放大)
image2 原图(最近邻放大)
Lanczos3 插值(现有超分做法)
Lanczos3 插值(现有超分做法)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 2K(放大到同尺寸显示)
香蕉 2.1 重建 4K(原生像素)
香蕉 2.1 重建 4K(原生像素)