A new dual-filter method of series filter technology is proposed,based on the series of average filter and Elliptic filter considering the advantage and disadvantage of FIR filter and IIR filter.

Textile images were enhanced by using mean filter and gaussian filter with different templates.

To provide fast and accurate real-time measurements of active and reactive for new type static var compensators,this paper designs a optimization digital low-pass filter with the approach by combining the Butterworth filters with mean filter.

In view of denoising salt-pepper noise, a weighted mean filter based on decomposition of histograms is proposed in this thesis.

Adaptive weighted average filtering algorithm based on medium value;

As familiar de-noising methods,median filter and average filter both have many disadvantages.

When low light level(LLL)image is processed by average filter, indistinctness may be caused seriousiy.