The idea of a slum conjures up an image of children playing amidst piles of garbage, with no running water and the rank, rife stench of sewage.

说道贫民窟，人们会联想到儿童在垃圾堆里玩耍，没有清洁水，没有空间，到处弥漫垃圾的恶臭。

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Using the discrete image degradation model, a block-based SVD filter scheme was applied for the image denoising with an automatically determined singular value rank.

从图像的退化离散模型出发，对图像进行逐层分块奇异值分解，并自动选取奇异值重组阶数以减少噪声对估计的影响。

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