how to make a curve smooth ??

Question

mary 2013-11-1

评论： Image Analyst 2013-12-7

if i have a result like a curve with sharp edges and i want to make the curve smooth how do i do this?? e.g like curves of snr vs. ber

Answer 1

Image Analyst 2013-11-2

You can use conv() (in base MATLAB), or sgolay() (in the Signal Processing Toolbox) or other functions. For example

windowSize = 9; % or whatever - bigger # = more smoothing.
smoothedSignal = conv(yourSignal, ones(1, windowSize)/windowSize, 'same');

Image Analyst 2013-12-7

smoothedSignal is certainly smoother than what you started with. Why do you say it is not? Can you post your data proving it is not smoother?

Answer 2

sixwwwwww 2013-11-1

Dear Mary, you can use smooth function for this purpose. See the following link for more information: http://www.mathworks.de/de/help/curvefit/smooth.html. I hope it helps. Good luck!