Service manual

4.5.4 Filtering and Color Conversion

(1) RGB Smoothing Filter

Depending on the results of auto letter/photo separation, the appropriate

software filters are applied to the RGB video signals. The RGB smoothing

filter is only applied to photo areas; signals from letter areas are not filtered.

(2) Background Density Control and ADS (Auto Image Density

Selection)

a. Background Density Control

This function removes low ID image signals (background) that are less than

a predetermined threshold. The threshold that is applied depends on the

color mode (single color or full color). For each of these modes, the user can

select a different threshold.

Before

After

IMAGE PROCESSING

A166/A187/A189 2-50 SM

CÓPIA NÃO CONTROLADA