Mean colour output is another convenient way in which to display the results of colour segmentation. It will take all of the pixels assigned a certain label, and replace them with their averaged red, green and blue values, outputting the result as a PPM file to the directory and file names specified in the relevant fields. In order to use this function, the labelled image must be on top of the stack i.e. displayed in the Imcalc Tv: then simply press the "Mean Col Output" button to generate the ppm image. Ensure that you change the filename to something other than that of the original image you loaded, as the function will not warn you about overwriting.