Figure 2From: Image analysis of anatomical traits in stalk transections of maize and other grasses Discerning the pith/rind boundary. Processing of the green channel of the original image with a Gaussian filter suppresses the rind region to establish the boundary of the pith (red line). The result depends on the width of the Gaussian filter used to convolve the image. Results from filter width 1, 1.5, 2, and 2.5 are shown.Back to article page