Characterization of Cell Arrangement by Polar Coordinate Analysis of Power Spectral Patterns.
Characterization of Cell Arrangement by Polar Coordinate Analysis of Power Spectral Patterns.
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通过功率谱图的极坐标分析来表征细胞排列。
DOI：
10.2472/jsms.42.126
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
H. Saiki
中科院分区：
文献类型：
--
作者：
T. Maekawa;M. Fujita;H. Saiki
为了定量评价木材横截面上二维细胞排列，对简化横截面图像进行二维FFT得到的功率谱图（PSP）进行数学处理，提取角度分布函数和频率分布函数。对7种针叶材和10种阔叶材的横切面进行了分析，并将切片中约1000个管胞和纤维的排列转换为均匀大小的小圆点的排列，每个圆点对应于细胞的中心。将这些点图的PSP归一化，在极坐标上变换，然后去卷积，以纯化仅细胞排列的信息和用于标本之间的比较。从角度分布函数可以估计径向锉上细胞排列的规律性，也可以阐明所有针叶材和部分阔叶材细胞的排列规律。此外，二维细胞大小及其变化是能够评估的基础上的频率分布函数。
For the quantitative evaluation of two-dimensional cell arrangement on the transverse section of wood, the angle and frequency distribution functions were extracted by some mathematical treatments of the power spectral pattern (PSP) which were obtained by the two dimensional FFT of simplified images of transverse sections. The transverse sections of seven softwoods and ten hardwoods were used for the analysis, and the arrangement of about one thousand tracheids and fibers within the sections was converted to the arrangement of small uniform-sized dots, where each dot corresponded to the center of cells. PSPs of these dot maps were normalized, transformed on the polar coordinate and then deconvoluted for the purification of the information of only cell arrangement and for the comparison among the specimens. From the angle distribution function, it was possiblee to estimate the array regularity of cells on the radial files, as well as to clarify the oblique-arrangement of cells in all softwoods and in some hardwoods. Furthermore, the two-dimensional cell size and its variation was able to be evaluated based on the frequency distribution function.