| Magnific.ai (https://magnific.ai) is a paid tool that works well, but it is expensive. However, this weekend someone released an open-source version which has a similar output. (https://replicate.com/philipp1337x/clarity-upscaler) I'd recommend trying it. It takes a few tries to get the correct input parameters, and I've noticed anything approaching 4× scale tends to add unwanted hallucinations. For example, I had a picture of a bear I made with Midjourney. At a scale of 2×, it looked great. At a scale of 4×, it adds bear faces into the fur. It also tends to turn human faces into completely different people if they start too small. When it works, though, it really works. The detail it adds can be incredibly realistic. Example bear images: 1. The original from Midjourney: https://i.imgur.com/HNlofCw.jpeg 2. Upscaled 2×: https://i.imgur.com/wvcG6j3.jpeg 3. Upscaled 4×: https://i.imgur.com/Et9Gfgj.jpeg ---------- The same person also released a lower-level version with more parameters to tinker with. (https://replicate.com/philipp1337x/multidiffusion-upscaler) |
Their example with the cake is the most obvious. To me, the original image shows a delicious cake, and the modified one shows a cake that I would rather not eat...