摘要
一、引言木材缺陷的检测是评定材质高低的一个重要依据。目前,我国木材缺陷的检测基本上处于用肉眼观察确定表面的缺陷;用敲击法或凭经验来判断内部缺陷的状况。用X光透视技术检验木材内部缺陷、评定木材等级还处于实验阶段。最近,计算机数字图象处理技术的应用已发展到生物学、医学、工业等方面,并已经收到了可喜的成果。但尚未见到应用于木材检测方面的报道。本文初步介绍了用伪彩色技术处理木材缺陷图象的一些实验结果。
According to the special features of wood X-ray picture, the authors use a new method—Double Filtering Pseudo Colour Processing, to enhance the wood defect pictures. There are two main parts in this paper; processing and pseudo colour processing. The first part includes mid—filtering, low—pass filtering and edge smoothing; the second part is mapping different gray—level of white—black pictures to corresponding colour of pseudo colour images. Two typical defect pictures, thick—adding and thick—losing, are processed in the article and the experimental results indicate that the new processing method is quite effective in both cases.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1989年第2期185-189,共5页
Scientia Silvae Sinicae
关键词
木材缺陷
X光图象
伪彩色
图象处理
Wood defects
X-ray picture
Rot
image processing
Pseudo colour
Medium filtering
Average filtering
Weight
