Reconstruct the iceit images using the bfgs variable metric method and obtain better images . 5 将数学中的bfgs变尺度法应用于iceit的成像,改善了成像结果。
Modified constrained variable metric method is adopted in this optimization , and the application of perturbation method in the re - analysis of the structure is studied 另外,还对结构重分析中摄动法的应用进行了讨论。
Modified constrained variable metric method is adopted in this optimization , and the application of perturbation method in the re - analysis of the structure is studied 另外,还对结构重分析中摄动法的应用进行了讨论。
The accuracy of the final results is better than 0 . 5 % after 1000 measurement data averaged . applying the variable metric method , we got preliminary images based on physical phantom 对硬件系统的测量结果表明,对测得的数据经1000次叠加后测量精度优于0 . 5 。
We reconstruct the dynamic images using the data measured from our physical phantom . the bfgs variable metric method is nonsensitive to noise , the result background is even on the whole . the objects in the images are clear 基于物理模型的实测数据的成像结果表明: bfgs变尺度法抗噪性能较好,图像的背景比较均匀,目标清晰;目标图像的大小与实际大小接近,定位较准确。