Patent ID: 7856150

Claim:
A denoise method on image pyramid, which is implemented to mobile or handheld devices, comprising: a pyramid analysis/synthesis algorithm, comprising pyramid analysis and pyramid synthesis in a plurality of iterative procedures respectively wherein, in each iterative procedure, the pyramid analysis is used to create a Level j+1 approximation image by down-sampling a Level j image, create a first Level j prediction image by up-sampling the Level j+1 approximation image through using a first interpolation, and compute the difference between the first Level j prediction image and the Level j image for obtaining a level j frequency image, and the pyramid synthesis is used to create a second Level j prediction image by up-sampling a Level j+1 denoised image and create a Level j denoised image by adding the second Level j prediction image to an output of a noise filter which is used to filter the level j frequency image; non local (NL) filter and minimum mean square error (MMSE) filter, included in the noise filter in each iterative procedure for removing gauss noise existing in the level j frequency image; and an auto-adaptive noise estimation algorithm in each iterative procedure for finding parameter of noise level used by the NL filter.