In traditional approach, people use l_2 -norm to measure data approximation item and regularization item in regularized image restoration and super-restoration in spatial domain.
在传统的空间域正则化图像复原或超分辨率图像复原方法中，是用向量2-范数度量数据逼近项和正则项。
2
The figures ascend floating aimlessly, but are essentially pressed in spatial suffocation, perhaps hassled to fit within the cube of the given norm.