| 摘要 |
A system and process by which misregistration among the pixel components of the several color planes of a color image can be substantially eliminated is presented. In an embodiment, the physical object which comprises the test scene is represented as having features that are uniform squares of alternating black and white color arranged. The digitized color image of the test scene is employed to make measurements of misregistration of scene features in its color planes. A process by which misregistration among the several color planes is measured, and substantially eliminated, is made up of three parts. First, one of the color planes is chosen as a reference plane. The remainder of the color planes are called secondary planes. The relative misregistration of image features in the secondary planes relative to corresponding image features in the reference plane are measured at dispersed pixel locations in the reference plane. Secondly, for each of the secondary planes, an interpolated approximation of the offset of its scene features is computed for each pixel location in the reference plane by using the measured offsets. Thirdly, the color components of each pixel in each of the secondary planes are interpolated using those offsets and the color component values from the neighboring pixels in the same secondary color plane. The interpolated color component values derived from each of the secondary planes are used to form revised color planes and the reregistered image. |
