AI Today Podcast: Generative AI Series: Diffusion Models and Image Generation
Sep 13, 2023
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The hosts discuss different series and interviews. They explore diffusion models and image generation in AI, including infilling, style transfer, and super resolution. They compare diffusion models to large language models. They also discuss generative AI techniques for image generation such as image to image transformation and super resolution.
Diffusion models are a versatile approach to image generation, offering capabilities like new image generation, infilling, style transfer, and super resolution.
Diffusion models differ from large language models in terms of input data and capabilities, focusing solely on image generation and offering a wider range of image generation tasks.
Deep dives
Diffusion Models and Image Generation
Diffusion models are an alternative approach to generating images compared to generative adversarial networks (GANs). While GANs create alternate images and rely on a discriminator to determine their authenticity, diffusion models progressively add noise to known training data, training the system to generate images from noise. Diffusion models have a broader range of image generation capabilities, including new image generation, image-to-image transformation, infilling, style transfer, super resolution, and outpainting. Popular diffusion models include DALL-E, DALL-E 2, Mid-Journey, and Stable Diffusion. Each model has its own unique methods for generating images and access methods, such as APIs or Discord bots. Although diffusion models may have some noticeable faults in generated images, they offer a more versatile and context-driven approach compared to GANs.
Diffusion Models vs. Large Language Models
Diffusion models differ from large language models (LLMs) in terms of their input data and capabilities. LLMs primarily work with natural language data, while diffusion models work with image data. LLMs use transformers to generate large amounts of high-quality text, while diffusion models solely focus on image generation, utilizing diffusion models instead of transformers. LLMs have the ability to handle complex linguistic syntax, instructions, and conversations, while diffusion models are more tailored to specific prompt-based image generation tasks. LLMs require large amounts of textual training data, whereas diffusion models learn from large image datasets, including image-caption pairs. While LLMs are highly versatile, diffusion models are limited to image generation tasks but offer a wider range of capabilities within that scope.
Improving Image Generation with Prompts and Techniques
Generating high-quality images with diffusion models requires attention to detail and effective prompts. Descriptive prompts play a key role in guiding the system to generate the desired image style, content, lighting, color schemes, framing, and mood. Additionally, techniques like image-to-image transformation, in-painting, out-painting, upscaling, and super resolution enhance the capabilities of image generation. Image-to-image transformation allows for the creation of a new image based on an existing one, while in-painting fills missing or damaged parts of an image. Out-painting expands the boundaries of an image, while upscaling and super resolution improve image size and quality. Successful use of prompts and techniques often requires iterations and experimentation to achieve the desired results.
It’s hard to have a conversation about AI these days without the topic of Generative AI coming up. People are using generative AI to help with many things, including creating images. But what do these technologies mean at an organizational level? And how do you apply this technology for your organization? In this podcast episode hosts Kathleen Walch and Ron Schmelzer take a deeper look at generative AI for images, in particular Diffusion Models and Image Generation.