Bootstrap Your Generator: Unpaired Visual Editing with Flow Matching

• URL: http://arxiv.org/abs/2606.03911v1
• Date: Tue, 02 Jun 2026 17:07:08 GMT
• Title: Bootstrap Your Generator: Unpaired Visual Editing with Flow Matching
• Abstract summary: We propose a framework for unpaired training of flow matching editing models.<n>ByG pairs instruction-following cues extracted from the frozen model with cycle-consistency for structure preservation.<n>We demonstrate state-of-the-art results on challenging data-scarce image and video editing scenarios.
• Score: 79.46676932242569
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Modern generative models possess a deep understanding of visual content, yet training them for image editing typically requires massive datasets of paired examples. This limits scalability, especially for video editing where collecting paired data is prohibitively expensive. We propose Bootstrap Your Generator (ByG), a general framework for unpaired training of flow matching editing models. It leverages the base model's knowledge without any external signal. Our approach pairs instruction-following cues extracted from the frozen model with cycle-consistency for structure preservation. To make this tractable, we propose to route gradients from downstream losses over clean predictions to noisy training states. We demonstrate state-of-the-art results on challenging data-scarce image and video editing scenarios. Extensive evaluations and user studies show that our method effectively generalizes to unseen domains and outperforms supervised baselines trained on millions of samples. Analysis reveals that our gradient routing bridges the train-inference gap, and extracting semantic cues from a base model provides a robust training signal that obviates the need for external reward models.

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