InstructRL4Pix: Training Diffusion for Image Editing by Reinforcement Learning

TL;DR

InstructRL4Pix introduces a reinforcement learning approach to train diffusion models for precise, instruction-guided image editing, overcoming dataset limitations and improving localization of editing regions in complex images.

Contribution

The paper presents a novel reinforcement learning framework that guides diffusion models using attention maps for accurate image editing based on natural language commands.

Findings

Outperforms traditional dataset-based methods in image editing accuracy

Effectively localizes editing regions in complex images

Achieves high-quality object insertion, removal, and transformation

Abstract

Instruction-based image editing has made a great process in using natural human language to manipulate the visual content of images. However, existing models are limited by the quality of the dataset and cannot accurately localize editing regions in images with complex object relationships. In this paper, we propose Reinforcement Learning Guided Image Editing Method(InstructRL4Pix) to train a diffusion model to generate images that are guided by the attention maps of the target object. Our method maximizes the output of the reward model by calculating the distance between attention maps as a reward function and fine-tuning the diffusion model using proximal policy optimization (PPO). We evaluate our model in object insertion, removal, replacement, and transformation. Experimental results show that InstructRL4Pix breaks through the limitations of traditional datasets and uses unsupervised learning to optimize editing goals and achieve accurate image editing based on natural human commands.