InstanceGen: Image Generation with Instance-level Instructions
Authors: name: Etai Sella; name: Yanir Kleiman; name: Hadar Averbuch-Elor
Published: 2025-05-08 22:31:23

Abstract: Despite rapid advancements in the capabilities of generative models,
pretrained text-to-image models still struggle in capturing the semantics
conveyed by complex prompts that compound multiple objects and instance-level
attributes. Consequently, we are witnessing growing interests in integrating
additional structural constraints, typically in the form of coarse bounding
boxes, to better guide the generation process in such challenging cases. In
this work, we take the idea of structural guidance a step further by making the
observation that contemporary image generation models can directly provide a
plausible fine-grained structural initialization. We propose a technique that
couples this image-based structural guidance with LLM-based instance-level
instructions, yielding output images that adhere to all parts of the text
prompt, including object counts, instance-level attributes, and spatial
relations between instances.