自己实现一个以图搜图

https://harper.blog/2024/04/12/i-accidentally-built-a-meme-search-engine/

• Vector Embeddings - Vector embeddings convert your text of images into numerical representations, allowing you to find similar pics and search your library effectively.
• Vector Database - A vector database is a way to store and search through encoded items, enabling you to find similar items.

1. 用 CLIP 将图片（包含元数据、描述？） vector encoding
2. 存到向量数据库 ChromaDB 中
3. 获取搜索图片/文本的 embeddings
4. 使用 ChromaDB 的内置功能来查询