Adaptive vs Non Adaptive Filters
조회 수: 5 (최근 30일)
이전 댓글 표시
I am struggling to understand the difference between adaptive and non adaptive filters in general. Also, in terms of the Wiener filter, I have seen it referred to as both an adaptive and a non adaptive filter. So what makes a filter adaptive or non adaptive? Thanks
댓글 수: 0
채택된 답변
Shashank Prasanna
2013년 5월 21일
I think wiki sums it pretty well:
댓글 수: 3
Image Analyst
2013년 5월 22일
Not exactly. MATLAB says that the wiener2 filter (not the wiener filter) "filters the image I using pixelwise adaptive Wiener filtering". So wiener2 uses wiener but changes it (adapts it) as it slides along the image.
추가 답변 (1개)
Youssef Khmou
2013년 5월 22일
편집: Youssef Khmou
2013년 5월 22일
hi, i think that :
The adaptive filter is usually linked to dynamic systems , the time is involved in the equations, so the filter performs the filtering actions at time t (t+1) based on posterior state t-1 (t), this way the filter adapts itself to new conditions it meets meaning that if the signal to be filtered has harsh fluctuations the filter operates based on those fluctuations,
Non adaptive filter, is a simple protocol ( algorithm) that can be applied to the signal without computing some statistics,
The problem of adaptive or not is based on Frequency Response ( Finite or not) and the intuition is that the adaptive filter performs well better that the non adaptive one .
The topic is open for discussion .
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Adaptive Filters에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!