Histogram-constrained Image Generation

• URL: http://arxiv.org/abs/2606.31683v1
• Date: Tue, 30 Jun 2026 13:58:56 GMT
• Title: Histogram-constrained Image Generation
• Abstract summary: Histogram-constrained Image Generation (HIG) is a novel control mechanism that falls into the middle ground of control granularity.<n>Our framework enforces user-specified distributional constraints (e.g., color histograms or latent token distributions) during the generation process with exact precision.<n>Our findings underscore the promise of distributional control, a flexible and interpretable control scheme that is fully compatible with existing control mechanisms.
• Score: 2.8568424450797596
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Diffusion models have emerged as a dominant paradigm in generative modeling, enabling high-fidelity sampling from complex data distributions. Despite impressive capabilities, controlling diffusion models to produce outputs aligned with user intent remains an open challenge, especially when balancing global coherence with local precision. Existing control mechanisms vary in the granularity of their conditioning signals. For example, textual prompts guide generation globally through high-level semantics, while ControlNet-like approaches secure precise local structure via dense conditions. In this work, we introduce Histogram-constrained Image Generation (HIG), a novel control mechanism that falls into the middle ground of control granularity. Our framework enforces user-specified distributional constraints (e.g., color histograms or latent token distributions) during the generation process with exact precision. We model such control as an optimal transport (OT) problem and apply explicit guidance transformations during sampling, thereby driving the diffusion trajectory to align with the desired histogram. We demonstrate the versatility of HIG across diverse applications, including constrained generation via color/latent histograms and high-capacity information embedding through histogram-level encoding. Our findings underscore the promise of distributional control, a flexible and interpretable control scheme that is fully compatible with existing control mechanisms, diversifying the hybrid strategies for controllable image generation. Our project page is available at: https://maps-research.github.io/hig/.

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