Stable Diffusion API Tutorial | Create Image from Text, Upscale Image | Stability.ai

Learn21 Academy
30 Apr 202308:50

TLDRThe video tutorial introduces viewers to the Stable Diffusion API by Stability.ai, which allows users to create images from text and upscale existing images. The presenter guides viewers through the process of signing up for an account on the Stability platform, obtaining an API key, and using it to interact with various API endpoints. The tutorial covers different functionalities such as checking account balance, listing available engines, and using the generation API to create images from text prompts with customizable parameters like CFG scale, sampler, and number of samples. The presenter also demonstrates how to upscale images and mentions other features like image editing and masking, although noting some confusion about the latter. The video concludes with an invitation for viewers to experiment with the platform, adjust parameters, and integrate the APIs into their applications, as well as to share their feedback and questions.

Takeaways

  • 📌 Stable Diffusion by Stability.ai has released an API for image manipulation.
  • 🚀 To get started, create an account on Stability's platform, Dream Studio, using Google or an email ID.
  • 🔑 After signing up, you receive an API key that you can use to interact with the APIs.
  • 💰 You are given a default number of credits (around 100-200) to use the APIs, after which you need to purchase more.
  • 🤖 The User API allows you to view account details and balances.
  • 📊 The Balance API provides information about the remaining credits.
  • 🔍 The Engine List API returns a list of all available engines for image manipulation.
  • 🎨 The Generation API is used to create images from text prompts with various customizable parameters like CFG scale, sampler, and number of samples.
  • 📈 The upscale feature allows you to increase the resolution of an image, making it clearer and more detailed.
  • 📝 Parameters like CFG scale control how closely the generated image adheres to the text prompt.
  • 🧩 There are additional features for image manipulation, such as masking and editing, although the tutorial did not cover them in detail.
  • 📚 More information about the parameters and how to use them can be found in the API documentation on the Stability.ai platform.

Q & A

  • What is the first step in using the Stable Diffusion API from Stability.ai?

    -The first step is to create an account on the Stability platform, which can be done through Dream Studio by signing up with Google or an email ID.

  • How does one obtain an API key for using the Stable Diffusion API?

    -After signing up for an account, you will receive an API key that you can use to interact with the APIs.

  • What is the default number of credits provided by Stability.ai for using their APIs?

    -By default, Stability.ai provides around 100 to 200 credits that can be used to interact with their APIs.

  • How can one check their account balance using the User API?

    -To check the account balance, one can use the 'user balance' endpoint and include the API key in the authorization header to get the response with the balance details.

  • What information does the 'engine list' API provide?

    -The 'engine list' API provides a list or array of all the different engines available, which can be useful as Stability.ai continuously adds new engines.

  • What are some of the parameters that can be selected when using the generation API?

    -Some of the parameters that can be selected include CFG scale guidance, height, width of the final image, sampler, number of samples, steps, and text prompt.

  • What is the default value for the CFG scale parameter in the generation API?

    -The default value for the CFG scale parameter is 7.

  • How does the response from the generation API look like?

    -The response from the generation API is a base64 encoded image, which can be decoded to view the generated image.

  • What is the process for using the image upscaling feature of the Stable Diffusion API?

    -To use the image upscaling feature, one must specify the engine to use (e.g., 'latent upscaler'), include the authorization with the API key, and submit the image to be upscaled in the request body. Optionally, one can also specify the desired width for the final output.

  • How can one view the upscaled image received from the API?

    -The upscaled image is received in base64 format, which can be viewed by using an online utility or a tool that decodes base64 to an image format.

  • Is there a Python SDK available for easier interaction with the Stable Diffusion API?

    -Yes, there is a Python SDK provided by Stability.ai that can make it easier to interact with the API and visualize the images.

  • What is the general feedback on the ease of use of the Stable Diffusion API?

    -The general feedback is that the Stable Diffusion API is very simple to use, with straightforward APIs that allow for experimentation with different parameters.

Outlines

00:00

🚀 Introduction to Stable Diffusion API

This paragraph introduces the audience to the recently released APIs of Stable Diffusion Stability. The speaker proposes to explore how these APIs can be integrated into applications for image manipulation. The process begins with creating an account on Dream Studio and obtaining an API key, which is then used to interact with the APIs. The paragraph also discusses the initial credits provided and the possibility to purchase more. It outlines the different APIs available, such as the user API for account and balance inquiries, the engine list API to view available engines, and the generation API with its various parameters for image creation. The speaker also demonstrates how to use these APIs, including how to format requests and interpret responses, and briefly touches on additional features like image to image editing, upscaling, and masking.

05:02

🖼️ Exploring Image Upscaling and Masking with Stable Diffusion

The second paragraph delves into the practical application of the Stable Diffusion API, focusing on image upscaling and masking. The speaker discusses the process of using the upscale feature, which requires specifying the engine and submitting an image for upscaling. The response is received in base64 format, which can be visualized using online tools or Python SDK. The paragraph also mentions the masking feature, although the speaker admits to not fully understanding it. The demonstration includes waiting for an image to load and the subsequent creation of an upscaled image, which is shown to be clearer and more detailed than the original. The speaker encourages the audience to experiment with the platform's APIs, try different parameters, and share their feedback or questions.

Mindmap

Keywords

💡Stable Diffusion API

The Stable Diffusion API is a set of programming tools provided by Stability.ai that allows developers to integrate image generation and manipulation capabilities into their applications. In the video, it is used to demonstrate how to create images from text and upscale images, which is central to the theme of leveraging AI for image processing.

💡Account Creation

Account creation is the process of signing up for a service, which in this context is Stability's platform. The video mentions that users can sign up using Google or an email ID to get started with the API, highlighting the ease of access to the technology.

💡API Key

An API key is a unique code that identifies a user or application when making requests to an API. In the script, it is mentioned that after signing up, users receive an API key which is essential for 'pinging' the APIs and accessing the services provided by Stability.ai.

💡Credits

Credits, in the context of the video, refer to the virtual currency used within the Stability platform to make API calls. The platform provides a default number of credits, and users can purchase more if needed. Credits are crucial for the practical use of the API.

💡User API

The User API is a specific part of the Stable Diffusion API that allows users to view account details or balances. It is an essential component for managing user interactions with the platform, as it is mentioned in the script where the user can copy the URL and use the API key for authorization to get account details.

💡Engine List

The Engine List is a feature of the Stable Diffusion API that provides a dynamic array of all available engines for image manipulation. It is significant as it allows users to see the different options they have for generating or processing images, which is a key part of the video's demonstration.

💡Parameters

Parameters are specific values or settings that can be adjusted when using an API to achieve desired outcomes. The video discusses various parameters such as CFG scale, guidance, height, width, sampler, and text prompt, which are crucial for customizing the image generation process according to the user's needs.

💡Base 64 Image

A Base 64 image is an encoded representation of an image in a string format that can be easily transmitted over the internet. In the script, the API response includes a Base 64 encoded image, which the user can then decode to view the generated image, showcasing the practical application of the API.

💡Image Upscale

Image Upscale refers to the process of increasing the size of an image while maintaining or enhancing its quality. The video demonstrates how to use the Stable Diffusion API to upscale an image, which is an important feature for improving the resolution of existing images.

💡Text Prompt

A text prompt is a descriptive input provided by the user to guide the image generation process. In the context of the video, the user inputs a text prompt such as 'boy playing in rain' to instruct the API on the type of image to generate, which is a fundamental aspect of creating images from text.

💡Python SDK

The Python SDK (Software Development Kit) is a set of tools and libraries for the Python programming language that can be used to interact with the Stable Diffusion API. The video suggests that using the Python SDK might be an easier way for some users to visualize and work with the images generated by the API.

Highlights

Stable Diffusion API from Stability.ai allows users to create images from text and upscale images.

To get started, create an account on Stability's platform and obtain an API key.

The platform provides a default of 100-200 credits for users to test the API.

Additional credits can be purchased after the initial allowance is used up.

The User API and Engines API are available for viewing account details and available engines.

The Generation API allows for image creation with parameters like CFG scale, height, width, sampler, and text prompt.

CFG scale determines how closely the generated image adheres to the prompt text.

The response from the Generation API is a Base64 encoded image.

The Image to Image API allows for uploading and editing an image.

The Image to Upscale API increases the resolution of an image.

The Image to Masking API is used for creating masks from images, though the speaker admits to not fully understanding it.

The Upscale API requires specifying the engine and the desired width of the final output.

The upscaled image is noticeably clearer and more detailed.

The platform offers a simple API for image manipulation which can be integrated into applications.

The video demonstrates the process of using the API with Postman and discusses the parameters in detail.

Python SDK is available for easier image visualization and manipulation.

The speaker encourages viewers to try the platform, experiment with parameters, and share feedback.

The video provides a walkthrough of creating an image from a text prompt and upscaling an image using the API.