* Add median filter option to blur node:
- Add median parameter to blur function for noise reduction
- Implement median_filter_algorithm with efficient quickselect
- Support gamma space calculations for median filtering
- Preserve edges while removing noise, complementing existing blur options
Feature in Issue: #912
* Optimize median filter algorithm by reusing buffers and improving pixel neighborhood collection
* Add median filter option to blur node:
- Add median parameter to blur function for noise reduction
- Implement median_filter_algorithm with efficient quickselect
- Support gamma space calculations for median filtering
- Preserve edges while removing noise, complementing existing blur options
Feature in Issue: #912
* Optimize median filter algorithm by reusing buffers and improving pixel neighborhood collection
* Improve median filter's NaN handling by using total_cmp for safe comparisons
* Add median filter node for noise reduction
- Create dedicated median_filter node separate from blur functionality
- Implement median_filter_algorithm with efficient quickselect
- Support gamma space calculations for consistency
- Use safe NaN handling with f32::total_cmp to prevent panics
- Optimize performance with memory reuse and O(n) median selection
* Refactor median filter to remove gamma handling and simplify algorithm
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Co-authored-by: Keavon Chambers <keavon@keavon.com>
Co-authored-by: Dennis Kobert <dennis@kobert.dev>
