The special cases of this algorithm referring to denoising can be obtained when H = I .Why do the results I get are not the results of denoising, but look like the results of image synthesis.

[mengchuangji]

Besides，when we set H = 0 and σ0 = 0, implying no measurements, the above algorithm
degenerates to an image synthesis. But the program will report an error when setting it up like this.