Effortless Image Captioning for Flux Models Using Colab

Introduction

When it comes to training LoRA models on Flux (such as Flux Dev or Flux Schnell), one of the most challenging tasks can be generating high-quality, detailed captions for your image datasets. That’s where this easy-to-use Colab notebook comes in, offering a powerful yet simple solution for automatically captioning images using the Florence-2 model, perfect for Flux and SDXL models.

This Colab notebook is designed to run smoothly in a T4 environment with normal RAM, making it highly accessible for a wide range of users. Whether you’re new to AI art generation or a seasoned professional, this tool provides an efficient way to prepare your datasets without overloading resources.

Key Features:

  • Seamless Google Drive Integration: Mount your Google Drive to directly access your image datasets.
  • Caption Generation with Florence-2: The notebook uses the powerful Florence-2 model to automatically generate detailed captions for each image in your dataset.
  • Customisable Token Limits: Depending on the Flux model (Dev or Schnell), the notebook adjusts the token limits to ensure optimised results.
  • Prepend/Postpend Text: Easily add or remove text to/from captions for extra flexibility—helping you include or exclude key trigger phrases.
  • Error-Free Processing: The notebook processes images one by one, so there’s no risk of memory overload in a Colab T4 environment.
  • Automatic Caption Saving: All captions are automatically saved as .txt files in the same directory as the corresponding images, so you don’t have to worry about manually managing files.

Why This Matters for Flux and XL Models

Flux models, especially when used for style training or dataset preparation, thrive on detailed, contextual captions. Whether you are experimenting with hybrid appearances in SDXL models or training LoRAs with distinct style prompts, this Colab ensures consistent, high-quality captions with ease. It’s not just for LoRA training—SDXL models can also benefit from the seamless workflow, making it a great multi-purpose tool for captioning AI image datasets.

How to Use It

  • Mount your Google Drive: The Colab mounts your Google Drive with just one click, making it easy to access and store datasets.
  • Generate captions: The notebook processes each image one by one to avoid memory issues and automatically saves captions as text files.
  • Finetune your captions: You can prepend or postpend specific text to customize your captions, or even remove unwanted phrases entirely.

This notebook is truly a time-saving, efficient solution for anyone working with Flux models, SDXL, or LoRA training.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.