在 Google Gemini 中创建 Gem 来帮你优化图片生成提示词

上篇文章已经采集了 Imagen 官网中的图片提示词，接下来实现图片生成提示词优化小助手。

先来找到官方提供的Imagen prompt guide网址，将内容拷贝到文件imagen_prompt_guide.md中。

找到Gem instructions rules，在创建Gem时在Instructions的说明处点击Learn more，找到Write great Gem instructions，将其中的内容拷贝到文件gem_instructions_rules.md中。

顺道说一句，使用谷歌插件 MarkDownload 可以将网页中选中的内容直接拷贝到 md 文件中。

上一篇已经采集了Google Imagen官网中的图片Prompt，接下来我们一起创建Gem。非常简单，几个步骤搞定。

点击Explore Gems进入Gem manager页面，点击New Gem进入Gem创建页面。将上面准备好的三个文件在Knowledge处选Upload Files进行本地上传，或者上传到Drive后再进行选择。

在Gemini中新开对话框，用Imagen官网中的提示词进行图片生成，然后和它聊高质量图片生成提示词如何写，要遵循的规则等等，对话框中给到Gemini的谷歌链接它有时候获取不到内容，将我们准备好的文件上传后让它学习，然后告诉它要扮演的角色，生成和Gem官方框架相同的Instruction，可以参考下我和Gemini的对话 https://g.co/gemini/share/f363e8d70b68。

在Instructions中输入Gemini给你的Instruction，如果不满意可以点击re-write按钮进行优化，你将得到一个非常专业的指令。

接下来就可以使用这个Gem给你的图片生成提示词进行优化了。可以参考下我的测试：https://g.co/gemini/share/692ae1df4e36，新开Gemini对话框输入生成的如下提示词：image create: A full shot, captured from a slightly high angle, depicting a live-action interpretation of Belle and a Hellboy-esque Beast engaged in a playful twirl. Belle, joyful, is adorned in a yellow ballgown with layers of tulle. The Beast, gentle with a hint of his underlying princely nature, is a large, muscular, red-skinned ape/monkey-like figure with a leathery texture, a visible tail, circular filed-off horn stumps on his forehead, cloven hooves, and an oversized right hand of rough, weathered granite. They dance in a curated palace garden overflowing with red, yellow, and white wildflowers and rose bushes; the flower petals are delicately crisp with dewdrops. The scene is illuminated by the gentle, warm light of a soft golden hour sunset transitioning into a magical twilight, casting long, warm shadows. The overall artistic style is a slightly more whimsical, storybook realism. The image should be photorealistic, cinematic, high detail, and professionally shot, with a shallow depth of field creating beautiful bokeh in the blurred background garden. The color palette is rich and luminous, evocative of a classic storybook illustration: the golden hour enriches the deep greens of the garden foliage, while the sky transitions from soft orange and pink near the horizon to a gentle violet overhead. The red, yellow, and white flowers appear vivid and jewel-like, and the overall scene has a slightly saturated, magical quality. The mood is joyful and romantic, imbued with whimsical storybook magic and a touch of gentle fantasy. Aspect ratio 16:9.

美女与野兽

参考链接：

[1] Imagen prompt guide: https://ai.google.dev/gemini-api/docs/image-generation#imagen-prompt-guide

[2] Write great Gem instructions: https://support.google.com/gemini/answer/15235603?visit_id=638834125899853404-1813257449&p=custom_gems&rd=1