I have a set of images which need to be filtered by different filters. So I have made an interface in which the user can choose his or her filter. However I now want to manipulate the degree of the filter. Meanfilter[imagedata, {1,2,3 etc.)]. I now have a working manipulate:

Manipulate[ArrayPlot[MedianFilter[imageDataOr, i]], {i, 0, 10, 1}]

but the image does not refresh when I use it in a graphical user interface. The code is:

outM = DialogInput[{
    TextCell["Adjust filter you want to use"],
    Row[{Manipulate[
       ArrayPlot[MedianFilter[imageDataOr, i]], {i, 0, 10, 1}]}],
    Button["Continue", DialogReturn[1]]}];

imageDataOr=ImageData]

EDIT: You have to grayscale the image.

To be specific. When I use the slider everything works fine, but when I click on a specific point it does not refresh Does anyone know what the problem can be?

Kind regards,

Glenn