APPLIED OPERATIONS
/Image Processing
IV.
OPERATION INSTRUCTIONS
IV .
2 - 2 3 3
Page
2-6-2 Contrast Conversion
The LUT intensity can be mapped (re-assigned) while observing a histogram.
Mapping (re-assignment) results in changing the image contrast.
An image acquired by observation contains intensity information in values from 0 to 4095,
but the intensity information used in actual display takes values from 0 to 255 by
assigning the original values from 0 to 4095 to values from 0 to 255 usually. This facility
changes the contrast by noticing a certain
section between 0 and 4095 and mapping this
section to values between 0 and 255.
1.
Display the [Process] panel at the front.
2.
Display the [Histogram] sub-panel of the [Process] panel at the front.
Fig. 2-88 [Histogram] Sub-panel
3.
Display the [Display] panel of the image you want to change the contrast.
The icon of the image is displayed in the frame at the top left of the [Process] panel
0
4095
Mapping
0
255
0
255
Sets the image to be subjected to
contrast change. The icon of the image is
displayed here.
<Compute Histogram> button
Displays the histogram.
[Channel] option button
Select the channel to be subjected to
LUT intensity mapping (re-assignment).
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