sketchkit.colorization.controlnet_lineart package¶

Module contents¶

ControlNet Lineart Model for Sketch Colorization (SDXL Version)

class sketchkit.colorization.controlnet_lineart.ControlNetLineartModel(device: str = 'cuda', controlnet_model: str = 'ShermanG/ControlNet-Standard-Lineart-for-SDXL', sd_model: str = 'stabilityai/stable-diffusion-xl-base-1.0', vae_model: str = 'madebyollin/sdxl-vae-fp16-fix', torch_dtype: dtype = torch.float16, safety_checker: bool = False, **kwargs: Any)[source]¶

Bases: object

ControlNet model with lineart conditioning for sketch colorization using SDXL.

pipeline¶

The loaded diffusers pipeline.

Type:: StableDiffusionXLControlNetPipeline

device¶

Computation device.

Type:: str

generate(control_image: Image, prompt: str, size: int | Tuple[int, int] | None = None, negative_prompt: str = '', num_inference_steps: int = 30, guidance_scale: float = 7.5, controlnet_conditioning_scale: float = 1.0, seed: int | None = None, **kwargs: Any) → Image[source]¶

Generates an image from a lineart sketch using SDXL ControlNet.

Parameters:

control_image (Image.Image) – The input conditioning lineart image.
prompt (str) – Text prompt describing the desired output.
size (Optional[Union[int, Tuple[int, int]]]) – Target resolution. If None, it auto-scales proportionally based on a 1024x1024 baseline.
negative_prompt (str) – Text prompt detailing what to avoid.
num_inference_steps (int) – Number of denoising steps. Defaults to 30.
guidance_scale (float) – CFG scale for text guidance. Defaults to 7.5.
controlnet_conditioning_scale (float) – Strength of the ControlNet. Defaults to 1.0.
seed (Optional[int]) – Random seed for deterministic generation.
**kwargs (Any) – Additional arguments for the pipeline.

Returns:

The generated image.

Return type:

Image.Image

Raises:

RuntimeError – If image generation fails during pipeline execution.