A method for encoding a frame of data is disclosed comprising receiving one or more data frames, low-pass filtering each of the received frames, horizontally subsampling each of the filtered frames by a scaling factor, and modifying the subsampled frames to resemble full frames. The system divides an analysis region of the input data to generate quad-trees, performs object-separation on the quad-trees, and generates BSP trees with respect to their spatial relationships among objects obtained by the object-separation. Any other iodine species selected from the group consisting of complexed iodine and triiodide may be present with the total of such other iodine species limited to a concentration of less than about 700 ppm so that any visible stain resulting from the application of this composition on the skin will dissipate without leaving any visible skin coloration.