1, color restoration processing caused by
color distortion
Printers usually use C, M, Y, K four color
ink to reproduce the color, because of the purity of the ink itself, so
printing overprint will also cause color distortion.
2, color separation processing caused by
color distortion
Before printing plate, the image information
needs to be converted into C, M, Y, K mode, that is, color separation.
The "color separation" is to
convert the color information of each pixel of the image into color information
suitable for printing mode C, M, Y and K. Color information of catalog printing will be lost in the
process of color separation.
In color separation, only according to the
printing ink, paper and other printing suitability, the correct setting of
color parameters can output high-quality color separation, as far as possible
to reduce the loss of color information.
3. Color distortion exists in the original
manuscript
Printed image manuscripts are mostly
obtained through photography. For the original photo, in addition to the
improper operation caused by color distortion in the process of shooting,
because the color is through the color material reproduction, and color
material is easy to occur color attenuation, so it may also cause the color
distortion of the photo.
4. Color distortion caused by scanning
processing
The image density of the photo manuscript
is continuous, so the catalog printing image information needs to be collected into the computer.
For the photo manuscript, scanning is a
very key link in image processing, improper operation will cause image color
distortion.