ComfyUI Node
CV HDR Merge to Radiance
Recovers the camera response curve from the bracketed exposures and their shutter times, then fuses a single float RADIANCE map (linear light, values well past 1.0). This is a raw CV array, NOT a displayable image - view it with 'Preview CV Array' (normalize/heatmap) and turn it into a picture with 'HDR Tonemap'.
CV HDR Merge to Radiance
- image
- radiance
◄exposure_times0.033, 0.25, 2.5, 15.0►
◄methodDebevec►
◄samples70►
Categoryimage/CV/hdr
Inputs (4)
| Name | Type | Default | Description |
|---|---|---|---|
| image | IMAGE | Batch of registered exposures of the same scene. Frame order MUST match exposure_times. | |
| exposure_times | STRING | 0.033, 0.25, 2.5, 15.0 | Comma-separated shutter time (seconds) of each frame, in the SAME order they were stacked. Only the ratios matter, so relative values (e.g. 2^EV) work too. Must be one value per exposure. |
| method | COMBO | Debevec | Response-calibration + merge algorithm. Debevec is robust and the usual choice; Robertson can wring out a little more range but is noisier and less stable. |
| samplesopt | INT | 7010–2000 | Debevec only: number of pixel locations sampled to fit the response curve. More = steadier fit, slower. |
Outputs (1)
| Name | Type | Description |
|---|---|---|
| radiance | NPARRAY | HxWx3 float32 linear-radiance map (BGR). Feed it to 'HDR Tonemap'; preview it with 'Preview CV Array'. |