1. Field of the Invention
The present invention relates to an image processing method and apparatus for synthesizing a plurality of different images.
2. Related Background Art
Hitherto, as a synthesis of digital images, for example, in a synthesis of a first image of plural colors and a second image of plural colors, namely, a synthesis of two images of full colors, a method of obtaining a synthesized image by calculating color components which construct both of the images is known. For instance, when respective color components assume R1, G1, B1, R2, G2, and B2, color components (R, G, B) of the synthesized image can be shown by values such as R=(R1+R2)/2, G=(G1+G2)/2, and B=(B1+B2)/2.
According to such a method, however, for example, when a white portion of an image and a normal image are synthesized, a synthesized image of a faint color is obtained. A synthesized image in which densities of dense portions of both images are reproduced as they are, like a multiple copy of an analog copy, cannot be formed.