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This program is part of Netpbm.
pamtouil reads a PNM or PAM image as input and produces a Motif UIL icon file as output. If the input is PAM, it may be either a regular grayscale or color image or grayscale+transparency or color+transparency. Where the transparency channel is present, pamtouil renders pixels that are more than half transparent as transparent in the output.
In the UIL's colormap, pamtouil uses the color names from the RGB database -- the same one ppmmake uses. Where a color in the input does not exactly match one of the colors named in the RGB database, pamtouil uses the closest color named in the RGB database.
Before May 2002, pamtouil was called ppmtouil and had no way to specify transparency.