Reconstruct the iceit images using the bfgs variable metric method and obtain better images . 5 將數(shù)學中的bfgs變尺度法應(yīng)用于iceit的成像,改善了成像結(jié)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,還對結(jié)構(gòu)重分析中攝動法的應(yīng)用進行了討論。
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,還對結(jié)構(gòu)重分析中攝動法的應(yīng)用進行了討論。
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 對硬件系統(tǒng)的測量結(jié)果表明,對測得的數(shù)據(jù)經(jīng)1000次疊加后測量精度優(yōu)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 基于物理模型的實測數(shù)據(jù)的成像結(jié)果表明: bfgs變尺度法抗噪性能較好,圖像的背景比較均勻,目標清晰;目標圖像的大小與實際大小接近,定位較準確。