%0 Journal Article
%T Algorithms for Boundary Detection within a Pyramid of Hexagonal Pixel Grids<br>分层六角网格中物体边缘检测的算法
%A TANG Hao-Jun
%A CHEN Ming
%A Richard WStimets
%A JTHsu
%A <br>汤浩钧
%A 陈明
%A J.T.Hsu
%J 计算机科学
%D 2007
%I 
%X In this paper we present algorithms for determining edge points and for constructing boundaries in a hexagonal neighborhood based on pixel gray-level within a pyramid of hexagonal pixel grids.We first introduce advantages of hexagonal grid structure over square grid structure and triangular grid structure,and 1-to-3 area ratio and 1-to-4 area ratio hexagonal pyramids,and then give out corresponding experimental demonstrations.The results show that the algorithms using hexagonal pyramid are robust to gaps and noise in the image data.Besides,boundary detection in a 1-to-4 area ratio hexagonal pyramid is better than in a 1-to-3 area ratio pyramid.
%K Hexagonal grid
%K Pyramid
%K Gray level
%K Edge detection
%K Machine vision<br>六角网格
%K 金字塔
%K 像素友度
%K 边缘检测
%K 机器视觉
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=7CAFAD548B731F799331050CADE80D47&yid=A732AF04DDA03BB3&vid=339D79302DF62549&iid=0B39A22176CE99FB&sid=0C191C6ECF79047F&eid=D537C66B6404FE57&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=9