ComfyUI Node
CV Colorize Model
Automatic colorization of a grayscale image with the colorization_deploy_v2 ONNX model (Zhang et al., ECCV 2016 via cv2.dnn). Place colorization_deploy_v2_2026april.onnx in ComfyUI/models/onnx and pick it. The model predicts the Lab ab colour channels from the L channel, which are merged back with the original L to produce a full-colour output. Feed a grayscale image; colour images are converted to grayscale first. The 'strength' slider scales the predicted ab channels (0 = grayscale passthrough, 1 = original model output). An IMAGE batch is processed frame by frame.
CV Colorize Model
- image
- image
◄model▾►
◄strength1.00►
Categoryimage/CV/dnn
Inputs (3)
| Name | Type | Default | Description |
|---|---|---|---|
| image | IMAGE | Grayscale input image. A colour IMAGE is converted to grayscale before colourization. An IMAGE batch is processed frame by frame; the output resolution matches the input. | |
| model | COMBO | Colorization .onnx model from ComfyUI/models/onnx (colorization_deploy_v2_2026april.onnx). | |
| strengthopt | FLOAT | 1.000–2 | Scales the predicted ab colour channels before merging with L. 0.0 = grayscale passthrough, 1.0 = original model output, >1.0 = oversaturated colours. |
Outputs (1)
| Name | Type | Description |
|---|---|---|
| image | IMAGE | The colourized image, same resolution as the input. Feed a Preview Image to see it. |