Imagen (text-to-image model)
| Imagen | |
|---|---|
| File:Illuminated Valley in the Afternoon (Imagen 4.0).webp An image generated with Imagen 4. Partial prompt: Softly illuminated afternoon valley with meandering river | |
| Developer | Google DeepMind |
| Initial release | May 2022 |
| Stable release | Imagen 4
/ 20 May 2025 |
| Repository |
|
| Engine | |
| Type | Text-to-image model |
| Website | Imagen website |
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| Part of a series on |
| Artificial intelligence (AI) |
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Imagen is a series of text-to-image models developed by Google DeepMind. They were developed by Google Brain until the company's merger with DeepMind in April 2023.[1] Imagen is primarily used to generate images from text prompts, similar to Stability AI's Stable Diffusion, OpenAI's DALL-E, or Midjourney.
The original version of the model was first discussed in a paper from May 2022.[2] The tool produces high-quality images and is available to all users with a Google account through services including Gemini, ImageFX, and Vertex AI.[3]
History
[edit | edit source]Imagen's original version was first presented in a paper published in May 2022. It featured the ability to generate high-fidelity images from natural language.[2] The second version, Imagen 2 was released in December 2023.[4] The standout feature was text and logo generation.[5] Imagen 3 was released in August 2024.[6] Google claims that the newest version provides better detail and lighting on generated images.[7] On 20 May 2025 at Google I/O 2025 the company released an improved model, Imagen 4.[8]
Technology
[edit | edit source]Imagen uses two key technologies. The first is the use of transformer-based large language models, notably T5, to understand text and subsequently encode text for image synthesis. The second is the use of cascaded diffusion models providing high-fidelity image generation. Imagen generates image in three stages, starting from a base of 64x64, then upsampled to 256x256 and 1024x1024.[2] Imagen 4 generates image up to 2k. [9]
Capabilities
[edit | edit source]Imagen can generate photorealistic images from text prompts.[3] It can also create various styles, such as cinematic, 35mm film, illustration, and surreal. Like most text-to-image generative AI models, Imagen has difficulty rendering human fingers, text, ambigrams and other forms of typography.
The model can generate images in five aspect ratios, namely 9:16, 3:4, 1:1, 4:3, and 16:9. Imagen can also refine already generated images by editing existing text prompts.[7]
See also
[edit | edit source]References
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