The CLIP Model is Secretly an Image-to-Prompt Converter

Fuente: arXiv
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Main Authors: Ding, Yuxuan, Tian, Chunna, Ding, Haoxuan, Liu, Lingqiao
Format: Preprint
Published: 2023
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author Ding, Yuxuan
Tian, Chunna
Ding, Haoxuan
Liu, Lingqiao
author_facet Ding, Yuxuan
Tian, Chunna
Ding, Haoxuan
Liu, Lingqiao
contents The Stable Diffusion model is a prominent text-to-image generation model that relies on a text prompt as its input, which is encoded using the Contrastive Language-Image Pre-Training (CLIP). However, text prompts have limitations when it comes to incorporating implicit information from reference images. Existing methods have attempted to address this limitation by employing expensive training procedures involving millions of training samples for image-to-image generation. In contrast, this paper demonstrates that the CLIP model, as utilized in Stable Diffusion, inherently possesses the ability to instantaneously convert images into text prompts. Such an image-to-prompt conversion can be achieved by utilizing a linear projection matrix that is calculated in a closed form. Moreover, the paper showcases that this capability can be further enhanced by either utilizing a small amount of similar-domain training data (approximately 100 images) or incorporating several online training steps (around 30 iterations) on the reference images. By leveraging these approaches, the proposed method offers a simple and flexible solution to bridge the gap between images and text prompts. This methodology can be applied to various tasks such as image variation and image editing, facilitating more effective and seamless interaction between images and textual prompts.
format Preprint
id arxiv_https___arxiv_org_abs_2305_12716
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle The CLIP Model is Secretly an Image-to-Prompt Converter
Ding, Yuxuan
Tian, Chunna
Ding, Haoxuan
Liu, Lingqiao
Computer Vision and Pattern Recognition
The Stable Diffusion model is a prominent text-to-image generation model that relies on a text prompt as its input, which is encoded using the Contrastive Language-Image Pre-Training (CLIP). However, text prompts have limitations when it comes to incorporating implicit information from reference images. Existing methods have attempted to address this limitation by employing expensive training procedures involving millions of training samples for image-to-image generation. In contrast, this paper demonstrates that the CLIP model, as utilized in Stable Diffusion, inherently possesses the ability to instantaneously convert images into text prompts. Such an image-to-prompt conversion can be achieved by utilizing a linear projection matrix that is calculated in a closed form. Moreover, the paper showcases that this capability can be further enhanced by either utilizing a small amount of similar-domain training data (approximately 100 images) or incorporating several online training steps (around 30 iterations) on the reference images. By leveraging these approaches, the proposed method offers a simple and flexible solution to bridge the gap between images and text prompts. This methodology can be applied to various tasks such as image variation and image editing, facilitating more effective and seamless interaction between images and textual prompts.
title The CLIP Model is Secretly an Image-to-Prompt Converter
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2305.12716