This is basically a stabilization of the v-prediction test of NoobAI. Weights from IterComp XL were added onto the model using this method, then the original clip was added back in.

Perpendicular component is used with add difference to prevent interference with v-prediction noise.

Nodes can be found here (requires sd_mecha installed): https://github.com/ljleb/comfy-mecha

Iterative Composition-Aware Feedback Learning: https://arxiv.org/pdf/2410.07171

V-prediction support has been added to Automatic1111 recently. On ComfyUI, use the ModelSamplingDiscrete node.