2.3.3 IMAGE PROCESSING FLOW
Image processing is done by the IPU (Image Processing Unit), following the steps shown below.
Overall image processing for this machine is designed to:
•Target edges with filters to improve the angles of text characters and reduce the occurrence of moiré filled areas.
•Improve the evenness of granular areas in images
Shading Correction
Ð
Gamma Correction
Ð
Ð
Main Scan Magnification
Ð
Auto Select
Ð
Filtering
Ð
Independent Dot Erase
Ð
Line Width Correction
Ð
Density Control
Ð
Grayscale Processing
Ð
Video Path
Ð
LD Unit
Corrects the dispersion of the scanning lens and CCD.
Background erase
Reduces the occurrence of moiré.
Determines if an image is text or raster image data and processes the data accordingly.
Selects the best methods for Filtering, Density Control, and Grayscale Processing.
MTF and smoothing (MTF filter of previous machines)
Either of two filters is selected by Auto Select above.
Removes isolated pixels.
Employs one of two gamma tables, selected by Auto Select above
Error diffusion, dithering, or binary picture processing
ÍÎ | Application (printer) |
PTM | B070/B071 |
