local mean in empirical mode decomposition

What is the local mean in empirical mode decomposition ? What is the different between local mean and mean? Can any one give me code of local mean? Thanks

Answer 1

[Image Analyst]

The local mean can be computed by conv2():

windowWidth = 9; % Some odd number
kernel = ones(windowWidth) / windowWidth^2;
localMeanImage = conv2(double(inputImage), kernel, 'same');