refocus

He may point to unconfessed sins or refocus your attention on Him.

他可能会指出那些未认之罪或是让我们的注意力集中在他身上。

The last part is conclusion portion, it sum up the discourse and fix the arithmetic of refocus and image deblur used in Infrared Guidance Head.

最后一章(第五章)是结论部,对本论文做了总结,并选定了适合红外导引头的调焦算法和图像恢复算法。