Identification of capacitors This page illustrates how to label objects using some of AdoIC's functions under Process menu bar and Arithmetic menu bar.  Upper left is a sample image of capacitors. It has some uneven illumination depicted in upper center image.  Upper right is a backround-corrected image obtained by subtracting the background image from the sample image and stretching by the maximum range.  Lower left is an interactively threholded image. Lower center is its boundary.  Lower right is obtained by seedfill and labelling routine.