these are similar approaches but different from a cursory glance, the nile red video is based on a paper from 2016, this was published in 2021 and they are trea

these are similar approaches but different from a cursory glance, the nile red video is based on a paper from 2016, this was published in 2021 and they are treating 1m lengths of wood and have a 10cm transparent piece that looks far more promising than the 2016 version, or Nile Reds