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Spent 6 hours fighting an AI sky replacement last Tuesday, and I want to know what I did wrong
Last Tuesday I had maybe the worst editing day of my life with an AI sky replacement tool. I shot a family session at Gas Works Park in Seattle around 5pm, and the sky came out flat gray, so I figured I would just swap it in post. I loaded 40 raw files into the tool and let it batch replace the sky, and it turned my 6 year old nephew's hair into a fuzzy halo, then it did the same thing to the dad's beard on 12 different shots. I tried masking it manually, then the tool kept putting clouds behind the fence posts and it looked like the sky was floating in front of them. Around hour 5 I just gave up and exported the originals, and honestly the gray sky looked better than whatever that AI was doing. I am not blaming the tool, I think I just do not know the right workflow for hair and edges yet. Has anyone here dealt with the halo problem specifically, and is there a setting or a cleaning step you do before the swap?
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pat_hall871d ago
Gas Works is brutal for that, all those tree lines and the fence silhouettes. The halo thing usually comes down to edge detection on fine detail, so before you swap anything try shooting a clean plate or just pull the hair out with a quick channel mask on the red channel and refine the edges in smaller chunks, like 8 to 10 shots at a time instead of the whole batch. For the fence posts, do the sky on a layer underneath your subject, then mask the posts back in by hand on top with a soft brush at low flow. Six hours on one session happens to all of us, but batching 40 at once is probably where it started going downhill.
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