1. An image processing apparatus for coloring an original image, said apparatus comprising: inputting means for inputting an original image to be painted and a color image for giving a key information determining a coloring of said original image; dividing means for dividing said original image input by said inputting means into a plurality of divided areas, and for dividing said color image input by said inputting means into a plurality of divided areas; calculating means for calculating a first area parameter representative of a geometrical feature of each of said divided areas with respect to said color image, and for calculating a second area parameter representative of a geometrical feature of each of said divided areas with respect to said original image; ordering means for ordering said first area parameters and for ordering said second area parameters; and coloring means for coloring said original image in such a manner that a divided area of said original image having a second area parameter has a color of a divided area of said color image, which has a first area parameter having the same order as said second area parameter.