Head Generator

Head Generator is a powerful tool for generating and customizing 3D heads for creating Lenses. It uses AI to generate a 3D head, which can then be driven by facial expressions, similar to Face Morph.

This guide will walk you through all the features and provide tips and hacks for getting the most out of your 3D head creations.

Getting Started

Launching Head Generator

1. Navigate to the GenAI Home Page using the Lens Studio AI option in the top right corner of the Lens Studio.

   

2. On the GenAI Home Page, you may need to scroll down to find the menu of GenAI tools. In the panel, select Head Generator.

   

User Interface Overview

1. Creation Panel: Provides tools for creating and editing 3D Heads.

   

2. Gallery: Shows all the assets you’ve created along with their statuses.

   

3. Search: Allows you to search through the 3D Heads you’ve created.

   

Asset Creation flow

1. Enter a text description of the 3D Head you want to generate. You can use the Surprise Me button to insert one of the default prompts and get familiar with the creation flow.

   

2. Select the desired Intensity - this setting controls the level of deformation applied to your 3D Head.

   

3. Optionally you can add personal notes in the User Notes field.

4. If you have an image of the desired 3D Head, go to the Image tab to upload your Image Prompt.

   

5. Use the Text Reference field to add context - for example, specify which part of the image should be used for generating the 3D Head or what modifications should be applied.

   

6. Once the prompts are entered and the Intensity is set, click the Generate button.

   

7. In the top-left corner of the Gallery, you will see that your generation request has been placed in the queue. The Status Bar at the bottom will indicate that generation takes about 15–20 minutes. You can close the window and return later.

   

8. Once the 3D Head has been generated, you will see the completed preview in the Gallery. Click on it to open the asset in detail view and access additional tools.

   

9. If the result does not meet your expectations, you can Change Geometry, Change Texture, or update the Text or Image prompts, then click Update Asset to try again with the new changes. Your original asset will remain in the Gallery, and a new entity will be created.

   

10. If the result matches your expectations, click Import to Project to bring the 3D Head into your project and continue building your lens.

    

11. In the project, you will find the created component along with a preview of the 3D Head you generated. Take a look at the Pairing to Snapchat guide to test your Lens on device, and the Publishing guide to learn more about sharing your creation.

    

Prompt Tips and Hacks

Words and Phrases

• Context Words and Phrases: It is best to divide long sentence descriptions into context phrases of 2-3 words separated by a comma symbol.
  • Works best: 1 human head, big sunglasses, red curly hair, realistic portrait, green lizard skin, good quality, highres, hipoly model, snake teeth, opened mouth
  • Works worse: Human that have green lizard skin and red curly hair wears big sunglasses he also has white snake teeth his mouth is opened also make it high quality 3D hipoly model

Descriptors

• Character: Mention the character you want to create.
  • Example: rhino, medieval king, clown, alien, samurai, robot, baby penguin
• Features: Mention face and head features that you want to emphasize.
  • Example: horn, fur, spiky hair, huge nose, big eyes, elf ears, facial tattoo, snake teeth, opened mouth
• Details: Add descriptors for accessories and special details.
  • Example: wig, crown, plague mask, wizard hat, pilot helmet, glasses
• Emotions: Mention emotions if needed.
  • Example: smiling, angry, cute, excited, sad, scared
• Style: Mention style if needed.
  • Example: realistic, cartoon, steampunk, anime, retro, minimalistic
• Color: While using color words can provide more control, too many color phrases can cause visual dismiss issues.
  • Examples:
    • Two colors are interpreted correctly: Prompt: 1 human head, big sunglasses, red curly hair, realistic portrait, green lizard skin, good quality, highres, hi poly model, snake teeth, opened mouth

      Front View	3/4 View

    • Too many color words can be mixed: Prompt: 1 orange human head, big yellow sunglasses, red curly hair, realistic portrait, violet eyes, green lizard skin, good quality, highres, hi poly model, white snake teeth, opened mouth

      Front View	3/4 View

Advanced prompting

• You can use the weight and the importance of words to strengthen their meaning. To do this, you can put a word or a phrase in oval brackets and set a weight between 1 and 1.5 inside: “(phrase:weight)”. Omitting the weight will automatically set it to 1.1
  • Examples:
    • Basic model with all parameters to value 1 (optionally hide): Prompt: 1 human head, big sunglasses, red curly hair, realistic portrait, green lizard skin, good quality, highres, hi poly model, snake teeth, opened mouth

      Front View	3/4 View

    • More red color at top of the head and higher lizard skin details with weights: Prompt: 1 human head, big sunglasses, ((red curly hair)), realistic portrait, (green lizard skin:1.2), good quality, highres, hi poly model, snake teeth, opened mouth

      Front View	3/4 View

Special words

• High-poly: To increase the level of detail.

  Base	Modified

• 3D printed: For geometric models with minimal overhangs.

  Base	Modified

• Anatomy: For detailed human or animal models.

  Base	Modified

• Hyper-realistic: To increase the realistic natural effect.

  Base	Modified

• Biomorphic: To create smooth abstract shapes.

  Base	Modified

Order of Words

• Weight of words: The words at the start of your prompt have the most influence and should fully reflect the concept.
  • Works best: 1 human head, big sunglasses, red curly hair, realistic portrait, green lizard skin, good quality, highres, hi poly model, snake teeth, opened mouth
  • Doesn’t work as well: highres, hi-poly, good quality 3d model, snake teeth, green lizard skin, curls, red hair, human head