λ-ECLIPSE: Multi-Concept Personalized Text-to-Image Diffusion Models by Leveraging CLIP Latent Space

Maitreya Patel, Sangmin Jung, Chitta Baral, Yezhou Yang

Abstract:

Despite the recent advances in personalized text-to-image (P-T2I) generative models, it remains challenging to perform finetuning-free multi-subject-driven T2I in a resource-efficient manner. Predominantly, contemporary approaches, involving the training of hypernetworks and Multimodal Large Language Models (MLLMs), require heavy computing resources that range from 600 to 12300 GPU hours of training. These subject-driven T2I methods hinge on Latent Diffusion Models (LDMs), which facilitate T2I mapping through cross-attention layers. While LDMs offer distinct advantages, P-T2I methods' reliance on the latent space of these diffusion models significantly escalates resource demands, leading to inconsistent results and necessitating numerous iterations for a single desired image.

Through empirical evidences we find that CLIP (vision) latent space is already expressive enough to preserve the fine-grained details. Building upon this insight, in this paper, we present λ-ECLIPSE, a diffusion-agnostic prior-training strategy that works in the latent space of a pre-trained CLIP model without relying on the diffusion UNet models. λ-ECLIPSE leverages the image-text interleaved pre-training for fast and effective multi-subject-driven P-T2I. Through extensive experiments, we establish that λ-ECLIPSE surpasses existing baselines in composition alignment while preserving concept alignment performance, even with significantly lower resource utilization. λ-ECLIPSE performs multi-subject driven P-T2I with just 34M parameters and is trained on a mere 74 GPU hours. Additionally, λ-ECLIPSE demonstrates the unique ability to perform multi-concept interpolations. Project page: \url{https://eclipse-t2i.github.io/Lambda-ECLIPSE/}

Submission Length: Regular submission (no more than 12 pages of main content)

Code: https://github.com/eclipse-t2i/lambda-eclipse-inference

Assigned Action Editor: ~Jia-Bin_Huang1

Submission Number: 2925