Applying the radialsection scanning method based on gray centroid, the image edges are tested with a sub-pixel precision.
采用基于灰度质心法的径向截面扫描法对图像边缘进行亚像素级检测；
2
This floor comprises a face board and a base material, the surface of base material is timber cross section, radialsection or staggered section of timber cross section and radialsection.
该地板包括表板、基材，基材的表面为木材横切面、径切面或者木材径切面和横切面的交错面。
3
Radial horizontal well is the most complicated one in horizontal well series, it has a major horizontal section and one or several branch sections.