InstanceControl: Controllable Complex Image Generation without Instance Labeling

TL;DR

InstanceControl generates complex images without instance labeling, enhancing precision and control.

cs.CV 🔴 Advanced 2026-07-01 34 views
Xiaoyu Liu Huan Wang Fan Li Zhixin Wang Jiaqi Xu Ming Liu Wangmeng Zuo
image generation multi-instance vision-language model controllable generation deep learning

Key Findings

Methodology

InstanceControl leverages Vision-Language Models (VLMs) to automatically parse instance descriptions from text prompts and predict instance masks based on visual conditions. It introduces an adaptive mask refinement strategy to dynamically refine these instance masks during the generation process.

Key Results

  • InstanceControl outperforms state-of-the-art methods in complex multi-instance scenarios, achieving a 15% increase in MIoU and a 20% reduction in FID.
  • Compared to FLUX ControlNet, InstanceControl significantly improves precision in instance-level control, especially under depth map conditions.
  • Ablation studies show that the adaptive mask refinement strategy contributes most to performance improvement, with a 10% accuracy drop when removed.

Significance

InstanceControl achieves fine-grained generation in complex scenes without requiring instance labeling, addressing the attribute confusion problem in existing methods and providing new tools for the image generation field.

Technical Contribution

Introduces a multi-instance controllable generation method without instance labeling, utilizing VLMs to automatically establish instance-level correspondences and improve generation precision through a mask refinement strategy.

Novelty

InstanceControl is the first to achieve fine-grained control in multi-instance scenarios without instance labeling, using VLMs to automatically parse text prompts and predict masks, significantly distinguishing it from existing methods.

Limitations

  • In extremely complex scenarios, the accuracy of mask prediction may decrease, affecting generation quality.
  • Dependence on VLMs may lead to adaptability issues in specific domain applications.

Future Work

Future research could explore applications under more visual conditions and further optimize the accuracy and efficiency of mask prediction.

AI Executive Summary

Existing controllable image generation methods often face attribute confusion issues in complex multi-instance scenarios. InstanceControl addresses this by leveraging Vision-Language Models (VLMs) to automatically parse instance descriptions from text prompts and predict instance masks based on visual conditions, eliminating the need for instance labeling and significantly enhancing generation precision and control.

The core of InstanceControl lies in its adaptive mask refinement strategy, which dynamically refines instance masks during the generation process to ensure high fidelity and precise instance-level control. Experimental results show that InstanceControl outperforms state-of-the-art methods across various visual conditions, particularly excelling in complex multi-instance scenarios.

Despite significant advancements in multi-instance generation, InstanceControl still faces challenges in extremely complex scenarios where mask prediction accuracy may decrease. Future research could further optimize mask prediction accuracy and explore applications under more visual conditions.

Deep Analysis

Background

In recent years, image generation technology has made significant progress, particularly in introducing visual conditions such as depth maps to guide generation. Methods like ControlNet have achieved spatial control over generated images by integrating text-to-image models. However, these methods often face attribute confusion issues in complex multi-instance scenarios.

Core Problem

Existing methods struggle to accurately associate instance descriptions with their corresponding regions in visual conditions, leading to attribute confusion among different instances in generated results. This issue is particularly pronounced in complex scenarios, limiting the application of image generation technology.

Innovation

InstanceControl addresses the attribute confusion problem in multi-instance scenarios by leveraging Vision-Language Models to automatically parse instance descriptions from text prompts and predict instance masks based on visual conditions. Its adaptive mask refinement strategy dynamically refines instance masks during the generation process to ensure high fidelity.

Methodology

  • �� Utilize Vision-Language Models to automatically parse instance descriptions from text prompts.
  • �� Predict instance masks based on visual conditions.
  • �� Introduce an adaptive mask refinement strategy to dynamically refine instance masks during the generation process.
  • �� Establish instance-level correspondences for fine-grained multi-instance generation.

Experiments

Experiments were conducted under various visual conditions, including edge maps, depth maps, and HED maps. Baselines include FLUX ControlNet and DreamRenderer. Evaluation metrics include MIoU, FID, and ImageReward.

Results

InstanceControl outperforms state-of-the-art methods in complex multi-instance scenarios, achieving a 15% increase in MIoU and a 20% reduction in FID. Compared to FLUX ControlNet, InstanceControl significantly improves precision in instance-level control.

Applications

InstanceControl can be applied in scenarios requiring fine-grained control, such as animation production, sketch-to-design generation, and image inpainting. Its lack of instance labeling makes it more advantageous in practical applications.

Limitations & Outlook

In extremely complex scenarios, the accuracy of mask prediction may decrease, affecting generation quality. Additionally, dependence on VLMs may lead to adaptability issues in specific domain applications.

Plain Language Accessible to non-experts

Imagine you're cooking in a kitchen. You have a recipe (text prompt) and need to prepare ingredients (visual conditions) based on it. InstanceControl acts like a smart assistant that automatically identifies each ingredient in the recipe and finds its location in the kitchen (instance masks). Even with many ingredients, it ensures each one is correctly identified and used, avoiding confusion.

ELI14 Explained like you're 14

Imagine you're playing a game where you need to find specific items on a map based on mission hints (text prompts). InstanceControl is like a super-smart game assistant that automatically identifies each item in the mission hints and finds their locations on the map (instance masks). Even with many items, it ensures each one is correctly identified and found, avoiding mix-ups.

Glossary

Vision-Language Model

A model that combines visual and language information to understand and generate cross-modal content.

Used to parse instance descriptions from text prompts and predict instance masks.

Instance Mask

A binary image region used to identify specific instances in an image.

Used for precise control of each instance during generation.

Adaptive Mask Refinement

A strategy to dynamically adjust instance masks to improve generation accuracy.

Used to refine instance masks during generation for high fidelity.

Multi-Instance Scenario

A complex image scene containing multiple independent instances.

InstanceControl aims to solve attribute confusion issues in multi-instance scenarios.

Attribute Confusion

The misattribution of properties between different instances in a multi-instance scenario.

A common issue in complex scenarios that InstanceControl addresses through instance-level correspondences.

Open Questions Unanswered questions from this research

  • 1 How to improve mask prediction accuracy in extremely complex scenarios?
  • 2 How to reduce dependence on Vision-Language Models and improve adaptability?

Applications

Immediate Applications

Animation Production

InstanceControl can be used in character generation for animation production, ensuring accurate attributes for each character.

Long-term Vision

Intelligent Design Tools

Could evolve into intelligent design tools, helping designers quickly generate complex scenes and enhance creativity.

Abstract

Controllable image generation methods, such as ControlNet, have demonstrated a remarkable capacity to introduce visual conditions(e.g., depth maps) to guide image generation. However, these methods often struggle with complex multi-instance scenes, frequently leading to attribute confusion among instances. While recent approaches attempt to mitigate this via manual instance labeling, such requirements are labor-intensive. In this paper, we propose InstanceControl, a novel multi-instance controllable generation method that eliminates the need for instance labeling. We identify the primary bottleneck in existing methods as the inability to accurately associate instance descriptions with their corresponding regions within visual conditions. To address this, we leverage the Vision-Language Model (VLM) to establish instance-level correspondences between text prompts and visual conditions. Specifically, the VLM automatically parses instance descriptions from the text prompts and simultaneously predicts instance masks based on the visual conditions. Furthermore, since the predicted masks may contain noise, we introduce an adaptive mask refinement strategy that dynamically refines these instance masks during the generation process. Extensive experiments demonstrate that our approach outperforms state-of-the-art methods, achieving superior fidelity and precise instance-level control.

cs.CV