测试SVD样本图像还原恢复功能，对图像进行测试时恢复效果较好

SVD分解方法满足能量守恒定理，可以实现有损压缩或者无损的能量提取，适合高精度

运算的场合要求。如何寻找一个提取能量的方法，尽量减少原图像的能量损失？- test SVD sample image to restore function, are tested against the image restoration is good

The　SVD decomposition method satisfies the principle of conservation of energy, can realize the lossy compression and lossless energy extraction, suitable for high precision

　operation requirements. How to search for a method to extract energy, reduce the energy loss of the original image?