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To apply a sample to the masked and non-masked areas separately using the TwoSamplersForMask node in Upscale, you need to use the TwoSamplersForMask Upscaler Provider node.
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The workflow can be set up as below.
- You can see that TwoSamplersForMask has been extended with full_sample_opt and pk_hook_full options. These options are provided to alleviate artifacts by applying a unified sample instead of separated sample operations during the iterative upscale process. full_sample_opt provides the KSAMPLE to use for the unified sample, or base_sample if it is omitted. pk_hook_full is a hook applied to the unified sample.
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The full_sample_schedule sets the schedule for applying the unified sample during iterative upscale.
- none - do not apply
- interleave1 - start with separate samples and alternate with full sample
- interleave2 - start with separate samples and repeat separate sample twice, then apply full sample once, and repeat
- interleave3 - start with separate samples and repeat separate sample three times, then apply full sample once, and repeat
- last1 - apply full sample on the last iteration
- last2 - apply full sample on the last two iterations
- interleave1+last1 - apply interleave1 and last1 schedules simultaneously
- interleave2+last1 - apply interleave2 and last1 schedules simultaneously
- interleave3+last1 - apply interleave3 and last1 schedules simultaneously
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The original image on the left has been masked as shown on the right. And separate samplers have been applied to the masked area and the area outside the mask.
- The image on the left has a single sampler applied instead of TwoSamplers. The image in the middle has full_sample_schedule set to none in TwoSamplers. The image on the right has full_sample_schedule set to interleave2+last1.
- It can be observed that the results differ slightly for the masked area.
- To perform high-resolution processing, you can use the TiledKSamplerProvider.
