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I am currently working on a project to generate Levels of Detail (LODs) using the Decimate Modifier in Blender. As part of the theoretical component, I need to explain the algorithm or technique employed by the Decimate Modifier for mesh simplification. Specifically, I would like to know which algorithm the Decimate Modifier uses for mesh simplification. Is it the Quadric Error Metrics (QEM) algorithm or the Progressive Mesh Simplification algorithm?

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    $\begingroup$ Blender is open source, you can look through the code and find out all about it first hand $\endgroup$
    – Duarte Farrajota Ramos ♦
    Commented Jun 3 at 8:33
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    $\begingroup$ Looks like according to this line in the Blender source code it's using the Quadric algorithm. $\endgroup$
    – Jakemoyo
    Commented Jun 3 at 16:30
  • $\begingroup$ Thanks a lot. yes I hav checked the source code and I think it is QEM algorithm $\endgroup$
    – malkasem
    Commented Jun 5 at 19:07

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