KarrasScheduler - ComfyUI Built-in Node Documentation

The KarrasScheduler node is designed to generate a sequence of noise levels (sigmas) based on the Karras et al. (2022) noise schedule. This scheduler is useful for controlling the diffusion process in generative models, allowing for fine-tuned adjustments to the noise levels applied at each step of the generation process.

Inputs

Parameter	Description	Data Type
`steps`	Specifies the number of steps in the noise schedule, affecting the granularity of the generated sigmas sequence.	INT
`sigma_max`	The maximum sigma value in the noise schedule, setting the upper bound of noise levels.	FLOAT
`sigma_min`	The minimum sigma value in the noise schedule, setting the lower bound of noise levels.	FLOAT
`rho`	A parameter that controls the shape of the noise schedule curve, influencing how noise levels progress from sigma_min to sigma_max.	FLOAT

Outputs

Parameter	Description	Data Type
`sigmas`	The generated sequence of noise levels (sigmas) following the Karras et al. (2022) noise schedule.	SIGMAS

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