均值漂移算法的铁路护栏网格提取  

Analysis of the Medication on Anticancer Drugs in Shanghai Sample Hospitals from 2011 to 2013

作　　者：归成[1] 刘皋林[1] GUI Cheng, LIU Gao-lin（ Department of Clinical Pharmacy, Affiliated First People＇s Hospital of Shanghai Jiao Tong University, Shanghai 200080, China）

机构地区：[1]上海交通大学附属第一人民医院临床药学科,上海200080

出　　处：《药品评价》2015年第2期28-32,共5页Drug Evaluation

基　　金：国家自然科学基金项目（5136501）; 江西省自然科学基金项目（20132BAB203020）; 江西省教育厅科学技术研究项目（GJJ13430）

摘　　要：针对铁路沿线护栏的检测问题,提出了一种改进的均值漂移算法。首先,从阈值分割算法入手,得到铁路防护栏网格区域的颜色范围;然后,基于均值漂移算法对其进行图像平滑和分割;再针对产生的过分割图像,采用基于最小面积的合并停止准则来进行区域合并;最后进行网格提取。实例验证表明：改进的均值漂移算法的效果优于传统的均值漂移算法。Objective： To investigate the clinical application of anticancer drugs in Shanghai sample hospitals during 2011-2013 so as to provide references for the production, marketing and application and etc. Methods： The data on anticancer drugs used in 119 Shanghai sample hospitals were compared and analyzed in respect to the clinical applications. Results： The demand for anticancer drugs had been rapidly growing. The main varieties are gimeracil and oteracil porassium capsules, pemetrexed, trastuzumab, ＂Xiaoaiping＂ and ＂Kangai＂ and etc. Conclusion： Prospect for the development of anticancer drugs is a very large market. It is urgent to develop effective, safe and inexpensive anticancer drugs.

关 键 词：铁路护栏 网格提取 阈值分割 均值漂移 区域合并 

分 类 号：R956[医药卫生—药学]