Preprocessing for AI: Edges and Depth Maps
To effectively use Controlled AI Models that rely on Edges or Depth maps, Fater provides tools within the Image Editor to generate these specialized images directly from your existing canvas content. These "preprocessed" images are then typically used as Control Layers.
These tools are found on the Inpaint Toolbar.
1. Generating an Edges Map
An Edges map highlights the outlines and significant contours of your image, providing structural guidance to AI models.
How to Generate:
Prepare Canvas & Generation Area: Ensure the visual content from which you want to extract edges is visible on your Inpaint Canvas and falls within the Generation Area Bounding Box. The tool will process what's inside this box.
Access Options (Optional): To adjust sensitivity, right-click the Generate Edges Map (CPU 🤖 icon) on the Inpaint Toolbar. A popover will appear:
Low Threshold: Affects how readily weaker edges are detected.
High Threshold: Determines strong edges that are definitely included.
Adjust these values as needed.
Generate: Click the Generate Edges Map (CPU 🤖 icon) on the Inpaint Toolbar.
Result: A new layer is created and added to your Layers Tab. This layer will be a black and white image, with white lines representing the detected edges. It's often named something like "Edges: [thresholds]".
Next Steps: You can then designate this new layer as a Control Layer and set its "Preprocessed Type" to
edges. (See Working with Control Layers)
2. Generating a Depth Map
A Depth map represents the perceived distance of objects in your image from the viewer, providing 3D spatial information to AI models.
How to Generate:
Prepare Canvas & Generation Area: Ensure the visual content for depth analysis is visible on your Inpaint Canvas and within the Generation Area Bounding Box.
Access Options (Optional): To change generation type or tiling, right-click the Generate Depth Map (Mountain ⛰️ icon) on the Inpaint Toolbar. A popover will appear:
Depth Generation Type:
Monotile: Processes the area as a single pass. Faster, but may have less detail for complex scenes.
Multitiles: Divides the area into smaller tiles for processing, then combines them. Can produce more detail but is significantly slower (may take up to 5 minutes).
X/Y Split Tiles (for Multitiles): If "Multitiles" is selected, define how many tiles to split the area into horizontally (X) and vertically (Y).
Adjust these settings as needed.
Generate: Click the Generate Depth Map (Mountain ⛰️ icon) on the Inpaint Toolbar.
Result: A new grayscale layer is created and added to your Layers Tab. Lighter areas represent closer elements, darker areas represent further elements. It's often named "Depth Map".
Next Steps: Designate this new layer as a Control Layer and set its "Preprocessed Type" to
depth. (See Working with Control Layers)
Important Considerations:
Generation Area is Key: Both tools operate strictly on the content visible within the current Generation Area Bounding Box.
Visible Layers: The tools analyze the composite image formed by all currently visible layers within that bounding box.
New Layer Output: The generated Edges or Depth map is always created as a new control layer, leaving your original layers untouched.
These preprocessing tools are essential for preparing the visual guidance needed by Fater's advanced "Controlled" AI models, allowing for more precise and structured image generation.
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