基于3种图像处理方法的杨树木材表面孔隙度比较  

Measurement of surface porosity of poplar wood species based on three image processing methods

作　　者：陈勇平[1,2] 王正[1] 常亮[1] 方露[1] 

机构地区：[1]中国林业科学研究院林业新技术研究所,北京100091 [2]中国林业科学研究院木材工业研究所,北京100091

出　　处：《福建林学院学报》2013年第4期381-384,共4页Journal of Fujian College of Forestry

基　　金：中国林业科学研究院林业新技术研究所基本科研业务费专项基金项目"基于图像识别的装饰单板外观分等技术研究"(CAFINT2013C06);国家林业公益性行业科研专项经费重大项目"杨树产业资源材培育及新产品开发关键技术研究"(201004004)

摘　　要：以转基因欧洲黑杨、北抗杨、转基因741杨和107杨为研究对象,通过图像处理后的色域分析,测量了木材表面孔隙度,并与Image-Pro Plus图像分析法和直线测量法进行比较。结果表明,Image-Pro Plus图像分析法可以直观获得木材横切面上管孔大小数值,但难以测量木材表面孔隙度;直线法虽然简化了测量工作,但仍旧耗费时间;基于图像处理的色域测定法在图片导入后可以即时获取木材表面孔隙度信息。色域测定法和直线测量法结果相当,4种杨树木材表面孔隙度大小依次为转基因欧洲黑杨>北抗杨>转基因741杨>107杨,其中直线测量法结果为75.91%、72.88%、70.73%、69.98%,色域测定法结果为70.61%、68.56%、65.56%、65.26%,Image-Pro Plus图像分析法测定管孔所占比率分别为20.76%、20.92%、22.64%、26.81%。The wood surface porosity of poplar species [ Populus nigra ＇ Shiji＇ （GMO）, P. de/to/des cl. ＇ Beikang＇ , P. alha x （P. davidiana ＋ P. simonii） x P. tomentosa and P. euramericana cv. ＇ N eva＇ ] was measured using the so-called color gamut displaying method, which was also compared with the Image-Pro Plus analysis and the straight-line method. The results showed that the pore size of vessels on wood cross-section could be easily calculated based on the Image-Pro Plus analysis software, but the measuremem of surface porosity was problematic. The straight-line method simplified the analysis procedure whereas still being time-consuming. By contrast, the color gamut displaying method could obtain wood surface porosity quickly upon importing pictures to the software. The wood surface porosity of different poplar species measured based on color gamut displaying method was comparable to the result of stralght-line method, and both methods indicated the sequence as follows： P. nigra ＇ Shiji＇ （GMO） 〉P. deltoides el. ＇ Beikang＇ 〉 P. alba ~ （ P. davidiana ＋ P. simonii ） ~ P. tomentosa 〉 P. euramericana cv. ＇ Neva＇. The results of strait-line method are 75.91%, 72.88%, 70.73%, 69.98%, the results of. color gamut displaying method are 70.61%, 68.56%, 65.56%, 65.26%, the measured vessel pore ratios based on Image-Pro Plus method are 20.76%, 20.92%, 22.64%, 26.81%.

关 键 词：图像处理 色域 表面孔隙度 管孔 杨树 

分 类 号：S718.3[农业科学—林学]