Many image SRR algorithms assume that the blurring process, i. e., point spread function (PSF) of the imaging system is known prior to reconstruction.

大多数重建算法假设成像系统的模糊特性也即点扩散函数(PSF)已知，然而实际的应用环境下P SF事先不知道或部分知道。

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In Chapter 2, we consider using CGE method (i. e. CG with early stop criterion) to solve the super-resolution image reconstruction problem.

第二章，我们考虑用CGE方法(即带早停止准则的共轭梯度法)求解超解像度图像重构问题。

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