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1.Overview
1.2 Available Functions of MLT (F)
This manual describes the operating procedures of the following three image processing func-
tions that are available with MLT (F). For details and information on other image processing
functions, please refer to Operation Manual and Setup Guide.
DWT*1 Edge Enhancement (
The DWT ENHANCE. tab provides the function to accentuate edge details of the expo-
sure image by specifying the three parameters; the degree of enhancement (EFFECT),
type of enhancement (FREQUENCY BASE), and type of density dependent of the
image (DENSITY BASE).
DWT DEP*2 (
The DWT DEP tab provides the function to compress the dynamic range of the exposure
image by specifying the six parameters; the density to start compression (STARTING
DENSITY), compression ratio (DEP WEIGHT), and intensity of compression (DEP
EFFECT) for both the High-Density Field (HIGH-DENS.) and Low-Density Field
(LOW-DENS.).
The imaging area on film or monitor is widened by decreasing the pixel value range in
the second region of interest, without changing the minute structures in the first region of
interest.
DWT Noise Reduction (
The DWT NOISE R. tab provides the function to reduce the noise components of the
exposure image, and improve it's granularity by specifying the two parameters; the
degree of enhancement (EFFECT) and upper limit of density (PROCESSING UPPER
LIMIT).
NOTE:
The effects resulting from changes to the parameters may be difficult to check
in the exposure image of the QA mode screen.
In these cases, check by touching [MAG.] or [QA-MAG.] to display the
enlarged screen.
Display of the Tabs
At the time of installation, the service person can specify the fixed parameters, and set
MLT (F) not to display the tabs for the individual settings of the DWT Edge
Enhancement, DWT DEP and DWT Noise Reduction.
*1
This is an abbreviation for Discrete Wavelet Transform. This method of image
processing is also called Multi-Frequency Processing.
*2
This is an abbreviation for Display Enhancement Processing. This method of
image processing is also called Dynamic Range Compression Processing.
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