The wood structure anisotropy and moisture content variation within the volume create different patterns of light scattering inside the wood. The objective of this study was to assess the suitability of a laser method for online measurement of green veneer moisture content based on the so-called tracheid effect. Beech and poplar veneers with thicknesses of 1, 2 and 3 mm were subsequently laser scanned and weighed to obtain various humidities. The results show that the measured laser scattering profile, such as the major axis, minor axis and ellipse area on the veneer surface, increases with moisture. The laser scattering profile provides a reliable and precise prediction of the moisture content. Out of the three ellipse parameters evaluated, the ellipse area provides the best prediction of the moisture content of the green veneer for both beech and poplar.

中文翻译：

---

基于激光散射模式的绿色单板非接触式水分含量测量

体积内的木材结构各向异性和水分含量变化在木材内部产生不同的光散射模式。本研究的目的是评估基于所谓的管胞效应在线测量绿色单板水分含量的激光方法的适用性。随后对厚度为 1、2 和 3 毫米的山毛榉和杨树单板进行激光扫描并称重以获得各种湿度。结果表明，测得的激光散射剖面，如单板表面的长轴、短轴和椭圆面积，随着水分的增加而增加。激光散射剖面提供可靠和精确的水分含量预测。在评估的三个椭圆参数中，