IMAGE PROCESSING
16 February 2000
2-20
Error Diffusion
The error diffusion process reduces the difference in contrast between light and
dark areas of a halftone image. Each pixel is corrected using the difference
between it and the surrounding pixels. The corrected pixels are then compared with
a matrix table.
Binary Picture Processing
Each video signal level is converted from 8-bit to 1-bit (black and white image data)
in accordance with a threshold value.
White/Black Conversion
Inverts the image (converts from white to black and vice versa).
After video processing, the data goes to the host computer through the memory
and SCSI controllers.
