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We'll run the Cupscale on the entire image set twice using the first two models, and pick the best images from each. The DDS images already have gone through a pass of 1x_artifacts_bc1_free_alsa (thanks Loinne!)
The models compared below:
- 4x_ESRGAN - Original but not the best now, makes things rather blurry - see below for examples. It is worth keeping as a comparison since it what I was using in Test Phase 1 and 2.
- 4x_BSRGAN - Seems to be the best all-rounder and keeps the colours the most similar, but can wash out some finer lined details (see shield icons) but given the scale of the original icons it's not that bad. Time to convert: 23459 seconds or 390.98 minutes or 6.51 hours. About 1 second/image on average.
- 4x_RealSR_DF2K_JPEG - Seems to work to keep the detail on icons, like shields, since obviously its treating things as JPEG/photos by the name - thus in some cases it keeps too much of the original and is just a mess. Some things like faces can look a bit better with this.
- realesrgan-x4plus - Is a bit like 4x_BSRGAN, but does further smoothing. Looks a bit too different for my tastes and a bit too dark (see door below) but if you want smooth you can get it with this.
Comparisons (note of course there may be transparency lost):
| Filename | Original (scaled up here if needed) | 4x_ESRGAN | 4x_BSRGAN | 4x_RealSR_DF2K_JPEG | realesrgan-x4plus | Jasperre's Winner |
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| is_harm |
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| BSRGAN is the most similar to the original scaled up - no smiling face. |
| ief_abildecr |
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| BSRGAN. Crisp "human" model and downward arrow, although possibly loses a bit of the red in general. |
| isk_movsilent |
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| BSRGAN or realesrgan-x4plus both look suitable, the former keeping the colour pallet a bit better. |
| dr_03 |
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| Click to zoom in - large files! BSRGAN by a chunk, the JPEG one keeps a lot of the artefacts. The colours are best retained in BSRGAN too. Note the original file was TGA so no DDS artefacts to cope with. |
| iashlw_011 |
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| The 4x_RealSR_DF2K_JPEG approach works well - it really brings the details of scratches and the crispness to the image and will look good in game. |
| cloak_001 (layer 4) |
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| BSRGAN keeps it simple and effective. There are some odd subtle but noticeable changes in colours from greyscale in them too which we might need to account for (less so on BSRGAN). |
