1. A method of graphic conversion for electronic data processing, comprising the steps of: interpreting an image as a first analog electrical signal; converting said first analog electrical signal into digital signals representing discrete, identifiable segments of said image and containing quantitative data representing a color value for said segments; generating a boundary tangent circle for each of said segments as a function of said segment quantitative color data; generating two pairs of common tangents to said boundary tangent circle for each of said segments as a function of adjacent segments quantitative color data; selecting one tangent from each of said two pairs of common tangents as dominant tangents as a function of adjacent segments quantitative color data; generating a second analog electrical signal as a continuous function of said dominant tangents of adjacent segments; and converting said second analog electrical signal into a visual display.