IMAGE PROCESSING
16 February 2000
2-18
2.4.3 IPU (IMAGE PROCESSING UNIT)
Overview
The image data from the SBU goes to the IPU IC on the SCU board, which carries
out the following processes on the image data.
1. Auto shading
2. Magnification
3. Mirror
processing
4. Filtering (MTF and smoothing)
5.
γ
(gamma) correction
6. Grayscale processing
7. Binary
picture
processing
8. Error diffusion
9. Dithering
10. White/black conversion
The image data then goes to the memory controller IC.
I P U
A D
A D
C
C
D
Selector
O d d
E v e n
8
M e m o r y
Controller
S C S I
S C S I
8
8
8
Analog Processing
IC 1
8
Analog
Processing IC 2
V R S
Borad
S B U
S C U
G413D505.WMF
