Texture Management – BYO Advanced Unsharp Mask tool in RGB & LAB

June 15, 2022

In Part 4, Hector Berrebi shows how to add clipping and range controls to our basic Unsharp Mask node tree in DaVinci Resolve in LAB and RGB.


Series

Part 4 – Building your own Advanced Unsharp mask node trees in LAB & RGB

In the previous Insight in this series, we created a simple Unsharp Mask tool in the node tree. This insight goes deeper into building a node-tree tool for texture work that has bigger functionality than a simple sharpen tool. We will add:

  • Clipping protection
  • Control the range of data we want to affect
  • Add the option to tone down our operation a bit by blending back the original (just like any OFX)

We will explore this in RGB & LAB color models and build this out in a node tree.

The value of building a complex node tree

This Insight creates two fairly complex node trees replicating what you usually find in a plugin. Is this effort worth it? Here’s what I think:

  • This series is about teaching concepts. You are learning – not working for a client under a deadline – and complex node-tree-tools are an EXCELLENT way to learn our craft, by going under its hood.
  • Plugins won’t have every control you may want built into them. So let’s say I’d replace the node tree with a Sharpen OFX – but what if I want to protect against highlight or shadow clipping? What if I want to limit the plugin’s input range? If I understand the plugin at a foundational level, then I may be able to add a few nodes to solve this problem.  

    Every professional (or aspiring professional) chooses the level of depth s/he wants to have with their software. The deeper you go, the more you’ll know – and that’s the spirit of this Insight.
  • Building your tools from nodes is a “gateway-drug” 😉  to heavier stuff – programing your own  DCTLs and Fusion FX can very well be your next step once you’ve gotten a taste of the power under your fingertips.

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