针对传统评价方法存在的缺陷,提出了一种新的软件质量评价模型。首先,针对已有投影模型存在的缺陷,给出了一个新的标准化的投影模型。在群决策环境下,使用区间数作为决策信息,借助所建的投影模型和TOPSIS (Technique for Order Preferen...针对传统评价方法存在的缺陷,提出了一种新的软件质量评价模型。首先,针对已有投影模型存在的缺陷,给出了一个新的标准化的投影模型。在群决策环境下,使用区间数作为决策信息,借助所建的投影模型和TOPSIS (Technique for Order Preference by Similarity to Ideal Solution)技术,建立了一种软件质量的评价模型,并给出了详细的评价程序。评价模型包括评价矩阵、加权评价矩阵、正负理想决策、加权评价矩阵到理想决策的投影测度以及它们的相关系数,评价信息来源于问卷调查。通过一个实例和实验分析,验证了该方法的可行性和有效性。实验结果表明,该评价模型具有较强的实用性、较好的鲁棒性和容易操作的特性。展开更多
In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the un...In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the unified reference coordinate system. A flexible planar calibration pattern was introduced to the calibration process, which can be arbitrarily placed and from which the known feature points can be extracted to construct other unknown feature points. With the known intrinsic parameters, the laser projector plane equation was fitted by the multi-noncollinear points, which were acquired through the principle of triangulation and the projective invariance of cross ratio. With this method, the strict alignment and multiple times of coordinate transformation can be avoided. Experimental results showed that the arithmetic mean of the root mean square(RMS) error of distance was 0.000 7 mm.展开更多
文摘针对传统评价方法存在的缺陷,提出了一种新的软件质量评价模型。首先,针对已有投影模型存在的缺陷,给出了一个新的标准化的投影模型。在群决策环境下,使用区间数作为决策信息,借助所建的投影模型和TOPSIS (Technique for Order Preference by Similarity to Ideal Solution)技术,建立了一种软件质量的评价模型,并给出了详细的评价程序。评价模型包括评价矩阵、加权评价矩阵、正负理想决策、加权评价矩阵到理想决策的投影测度以及它们的相关系数,评价信息来源于问卷调查。通过一个实例和实验分析,验证了该方法的可行性和有效性。实验结果表明,该评价模型具有较强的实用性、较好的鲁棒性和容易操作的特性。
基金Supported by the National Natural Science Foundation of China(No.51105273)
文摘In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the unified reference coordinate system. A flexible planar calibration pattern was introduced to the calibration process, which can be arbitrarily placed and from which the known feature points can be extracted to construct other unknown feature points. With the known intrinsic parameters, the laser projector plane equation was fitted by the multi-noncollinear points, which were acquired through the principle of triangulation and the projective invariance of cross ratio. With this method, the strict alignment and multiple times of coordinate transformation can be avoided. Experimental results showed that the arithmetic mean of the root mean square(RMS) error of distance was 0.000 7 mm.
