...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Rapid prototyping journal >A method for performance evaluation of RE/RP systems in dentistry
【24h】

A method for performance evaluation of RE/RP systems in dentistry

机译：牙科RE / RP系统性能评估的方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Purpose - The purpose of this paper is to investigate a method for comparing the scanning and reproducing accuracy of highly shaped objects like plaster casts used in dentistry. Design/methodology/approach - Theoretical considerations on errors introduced by the scanning systems and subsequent point clouds data elaboration have led to a method to estimate the accuracy of the whole process. Suitable indices have been chosen and computed at each stage. As a final result, the overall chain, scanning and reproducing systems can be assessed. In order to validate the proposed method casts have been scanned by means of commercial systems and then reproduced by using different rapid prototyping technologies, materials and parameters. Error indices have been computed and reported. Findings - Since it is not possible to define reliable and meaningful reference models for non-standard shapes, an absolute accuracy value for the scanning process cannot be stated. Anyway the proposed method, thanks to relative performance indices, allows the comparison of different acquisition systems and the evaluation of the most performing manufacturing chain. Practical implications - The study provides a method to assess the relative performance between commercial systems both in scanning and reproducing stage. Originality/value - In literature, some studies on the accuracy of scanning devices have been found but they are based on standard geometrical features. In this paper, the problem of complex shapes in absence of reference model is addressed instead.
机译：目的-本文的目的是研究一种方法，用于比较高形状物体（如牙科用石膏）的扫描和复制精度。设计/方法/方法-有关扫描系统引入的错误以及随后的点云数据详细说明的理论考虑，导致了一种估计整个过程准确性的方法。在每个阶段都选择并计算了合适的指数。作为最终结果，可以评估整个链，扫描和复制系统。为了验证所提出的方法，铸模已经通过商业系统进行了扫描，然后通过使用不同的快速原型技术，材料和参数进行了复制。错误指数已计算并报告。发现-由于无法为非标准形状定义可靠且有意义的参考模型，因此无法说明扫描过程的绝对精度值。无论如何，由于相对的性能指标，所提出的方法允许比较不同的采购系统和评估性能最高的制造链。实际意义-该研究提供了一种评估商业系统在扫描和复制阶段之间相对性能的方法。原创性/价值-在文献中，已经发现了一些有关扫描设备准确性的研究，但这些研究都是基于标准的几何特征。本文解决了缺少参考模型的复杂形状问题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号