谷歌'Nano Banana'官方提示词指南:AI作图终极秘籍
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引言:AI图像生成新浪潮,谷歌官方教程来了
人工智能(AI)的浪潮正以前所未有的速度席卷全球,尤其是在AIGC(AI-Generated Content)领域,图像生成技术更是日新月异。最近,一个名为"Nano Banana"的AI工具在创意圈引起了巨大轰动,从让梵高与蒙娜丽莎在现代合影,到生成炫酷的动画视频,其强大的能力令人惊叹。正当大家还在摸索其使用技巧时,谷歌官方亲自下场,发布了一份详尽的提示词(Prompt)指南,为所有创作者点亮了指路明灯。
本文将深入解读这份官方指南,不仅会展示其令人惊艳的效果,更会逐一剖析6大核心提示词类型,并附上完整的API代码示例。无论你是设计师、营销人员还是纯粹的AI爱好者,这篇终极秘籍都将帮助你彻底掌握AI作图的精髓。想获取更多前沿的AI资讯和实用工具,可以访问AI门户网站 https://aigc.bar,开启你的创作新纪元。
“Nano Banana”是什么?揭秘谷歌AI图像生成核心能力
在我们深入提示词的艺术之前,首先要明白我们讨论的“Nano Banana”究竟是什么。这其实是社区对谷歌最新、最强大的图像生成模型(根据代码示例,其背后是
gemini-2.5-flash-image-preview
模型)的爱称。它不仅仅是一个简单的文本到图像工具,而是集成了五大核心功能的创作平台:- 文本转图像 (Text-to-Image):最基础也最核心的功能,通过文字描述创造出高质量的视觉作品。
- 图像+文本转图像 (Image+Text-to-Image):强大的图像编辑能力,你可以上传一张图片,然后用文本指令对其进行修改、添加或删除元素,甚至改变整体风格。
- 多图像到图像 (Multi-Image-to-Image):融合多张图像的精髓,用于创造全新的复合场景或进行风格迁移。
- 迭代细化 (Iterative Refinement):支持通过多轮对话不断调整和优化图像,直到达到你心中最完美的效果。
- 高保真文本渲染 (High-Fidelity Text Rendering):在图像中精准生成清晰、美观的文字,非常适合用于制作Logo、海报和图表。
更重要的是,谷歌强调了一个核心理念:要像讲故事一样描述场景,而不是简单堆砌关键词。一个富有叙事性、细节丰富的段落,能让大模型更好地理解你的意图,从而生成更加连贯和惊艳的图像。
官方六大提示词秘籍深度解析(附代码)
掌握了核心理念后,让我们来逐一拆解谷歌官方给出的6类黄金Prompt法则。每一个类别都代表了一种强大的应用场景,并配有官方示例和代码,让你能够即学即用。
1. 创造极致逼真的场景
想要生成照片级的逼真图像,你需要像一位专业摄影师那样思考。在提示词中加入相机角度、镜头类型、光照条件、景深等专业术语,能极大地提升图像的真实感。
官方提示词示例:
> "A photorealistic close-up portrait of an elderly Japanese ceramicist with deep, sun-etched wrinkles and a warm, knowing smile. He is carefully inspecting a freshly glazed tea bowl. The setting is his rustic, sun-drenched workshop with pottery wheels and shelves of clay pots in the background. The scene is illuminated by soft, golden hour light streaming through a window, highlighting the fine texture of the clay and the fabric of his apron. Captured with an 85mm portrait lens, resulting in a soft, blurred background (bokeh). The overall mood is serene and masterful."
代码示例:
`
python
from google import genai
from PIL import Image
from io import BytesIO配置你的API密钥
client = genai.Client()
从文本提示生成图像
image_parts = [
part.inline_data.data
for part in response.candidates[0].content.parts
if part.inline_data
]
if image_parts:
image = Image.open(BytesIO(image_parts[0]))
image.save('photorealistic_example.png')
image.show()
`
解析:这个Prompt的成功之处在于细节的极致描绘。它不仅定义了人物(年迈的日本陶艺家)、动作(检查茶碗)和环境(阳光普照的工作室),还指定了光线(金色时光)、镜头(85mm肖像镜头)和效果(背景虚化/bokeh),最终的成品自然充满了故事感和艺术性。2. 定制风格化的插图和贴纸
如果你需要为项目设计贴纸、图标或特定风格的插画,明确的风格指令至关重要。同时,要求使用“白色背景”或“透明背景”可以方便后期使用。
官方提示词示例:
> "A kawaii-style sticker of a happy bear cub holding a giant strawberry. The sticker has a thick, bold white outline. The design is simple, with clean lines and a vibrant color palette. White background."
代码示例(与上方类似,仅替换
contents
内容):
`
python... (代码前部分相同) ...
response = client.models.generate_content(
model="gemini-2.5-flash-image-preview",
contents="A kawaii-style sticker of a happy bear cub holding a giant strawberry. The sticker has a thick, bold white outline. The design is simple, with clean lines and a vibrant color palette. White background.",
)
... (代码后部分相同) ...
`
解析:“Kawaii-style”(卡哇伊风格)、“thick, bold white outline”(粗白边)、“vibrant color palette”(鲜艳的调色板)等关键词直接定义了图像的艺术风格,生成的快乐小熊贴纸生动可爱,非常适合作为设计素材。3. 在图像中实现精准文本渲染
在图像中生成清晰可读的文字一直是AI作图的一大难点。通过详细描述文本内容、字体风格以及它与图像元素的融合方式,可以大大提高成功率。
官方提示词示例:
> "Create a modern, minimalist logo for a coffee shop called 'The Daily Grind'. The text should be in a clean, bold, sans-serif font. The design should feature a simple, stylized icon of a a coffee bean seamlessly integrated with the text. The color scheme is black and white."
代码示例(替换
contents
内容):
`
python... (代码前部分相同) ...
response = client.models.generate_content(
model="gemini-2.5-flash-image-preview",
contents="Create a modern, minimalist logo for a coffee shop called 'The Daily Grind'. The text should be in a clean, bold, sans-serif font. The design should feature a simple, stylized icon of a a coffee bean seamlessly integrated with the text. The color scheme is black and white.",
)
... (代码后部分相同) ...
`
解析:该提示词明确了品牌名('The Daily Grind')、字体要求(简洁、粗体、无衬线)、图标元素(咖啡豆)及其与文字的结合方式(无缝集成),最终生成了一个专业且符合品牌调性的现代Logo。4. 生成专业级产品模型和商业摄影
无论是电商网站还是广告宣传,高质量的产品图都至关重要。你可以通过模拟专业摄影棚的布光、相机角度和背景来生成商业级的照片。
官方提示词示例:
> "A high-resolution, studio-lit product photograph of a minimalist ceramic coffee mug in matte black, presented on a polished concrete surface. The lighting is a three-point softbox setup designed to create soft, diffused highlights and eliminate harsh shadows. The camera angle is a slightly elevated 45-degree shot to showcase its clean lines. Ultra-realistic, with sharp focus on the steam rising from the coffee. Square image."
代码示例(替换
contents
内容):
`
python... (代码前部分相同) ...
response = client.models.generate_content(
model="gemini-2.5-flash-image-preview",
contents="A high-resolution, studio-lit product photograph of a minimalist ceramic coffee mug in matte black, presented on a polished concrete surface. The lighting is a three-point softbox setup designed to create soft, diffused highlights and eliminate harsh shadows. The camera angle is a slightly elevated 45-degree shot to showcase its clean lines. Ultra-realistic, with sharp focus on the steam rising from the coffee. Square image.",
)
... (代码后部分相同) ...
`
解析:通过指定“工作室灯光”、“三点柔光箱布局”、“45度俯拍”等专业摄影术语,AI能够精准还原商业摄影的质感。对材质(哑光黑陶瓷、抛光混凝土地面)和动态细节(咖啡升起的蒸汽)的描述,让最终图像无比逼真。5. 设计极简主义与负空间背景
极简主义设计在现代视觉传达中非常流行。通过创造大量的“负空间”(留白),可以生成非常适合用作网站背景、演示文稿或需要叠加文字的营销材料。
官方提示词示例:
> "A minimalist composition featuring a single, delicate red maple leaf positioned in the bottom-right of the frame. The background is a vast, empty off-white canvas, creating significant negative space for text. Soft, diffused lighting from the top left. Square image."
代码示例(替换
contents
内容):
`
python... (代码前部分相同) ...
response = client.models.generate_content(
model="gemini-2.5-flash-image-preview",
contents="A minimalist composition featuring a single, delicate red maple leaf positioned in the bottom-right of the frame. The background is a vast, empty off-white canvas, creating significant negative space for text. Soft, diffused lighting from the top left. Square image.",
)
... (代码后部分相同) ...
`
解析:这个提示词的核心在于构图和空间感的营造。“右下角的一片精致红枫叶”与“广阔的灰白色画布背景”形成强烈对比,创造出优雅的视觉焦点和充足的文本空间。6. 创作连环画与故事板
对于需要连续叙事的项目,如漫画、故事板或动画分镜,你可以通过逐帧描述场景、角色动作和氛围来构建视觉故事。
官方提示词示例:
> "A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a detective in a trench coat stands under a flickering streetlamp, rain soaking his shoulders. In the background, the neon sign of a desolate bar reflects in a puddle. A caption box at the top reads \"The city was a tough place to keep secrets.\" The lighting is harsh, creating a dramatic, somber mood. Landscape."
代码示例(替换
contents
内容):
`
python... (代码前部分相同) ...
response = client.models.generate_content(
model="gemini-2.5-flash-image-preview",
contents="A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a detective in a trench coat stands under a flickering streetlamp, rain soaking his shoulders. In the background, the neon sign of a desolate bar reflects in a puddle. A caption box at the top reads \"The city was a tough place to keep secrets.\" The lighting is harsh, creating a dramatic, somber mood. Landscape.",
)
... (代码后部分相同) ...
`
解析:此提示词完美地构建了一个电影般的场景。“黑色电影艺术风格”、“高对比度黑白墨水”、“闪烁的路灯”等元素共同营造出一种坚韧、神秘的氛围。连顶部的文字说明框内容都已指定,展示了其强大的场景控制能力。结论:立即开启你的AI创作之旅
谷歌这份详尽的“Nano Banana”提示词指南,无疑为所有AIGC创作者打开了一扇新的大门。它告诉我们,有效的Prompt不仅仅是关键词的堆砌,更是一门结合了摄影、设计、叙事和艺术的综合学问。通过学习和实践这6大类提示词技巧,你将能够更精准地控制AI,将脑海中的奇思妙想转化为令人惊叹的视觉杰作。
技术的浪潮滚滚向前,从最初的模糊不清到如今的以假乱真,AI图像生成正在以前所未有的方式赋能创意产业。心动不如行动,现在就去体验这项创新技术的强大吧!想要了解更多关于AI的最新动态、教程和工具,欢迎访问一站式AI门户 https://aigc.bar,那里有你探索未来所需的一切。
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