Lut Math; Fix Z Scale - JEOL JSPM-5200 Instructions Manual

6.9.6

LUT Math

An LUT is mathematically operated on with addition, multiplication or other operation.
The following eight operations are provided:
【 Example 】
If 100 is added to a current LUT with the Add operation, the image is displayed
with the new LUT shown below.
If the result of a numerical operation is outside the range of 0 to 255, the data is set
to 0 or 255.
255
(White)
Level
(Displayed
value)
(Black) 0
6.9.7

Fix Z scale

Fix Z Scale changes the scale of the image brightness (height of specimen-surface
unevenness).
For instance, in the case of a height profile displayed with the Profile function as shown
below (left), the scale of height (brightness) is 0 to 10 nm for image brightness of 0
(black) to 255 (white). If the scale is changed to 0 to 20 nm, the displayed height
(brightness) profile changes as shown below (right). The contrast of the displayed image
is also changed.
This function is used to compare two images whose height scales differ from each other,
by converting them to the same height scales.
TMPM5200-2
Operation
Inverse Level axis of LUT is inverted.
Reverse Data axis of LUT is reversed.
Add A constant is added to LUT.
Bitwise And AND operation with a constant for each bit
Bitwise Or OR operation with a constant for each bit
Bitwise Xor XOR operation with a constant for each bit
Multiply LUT is multiplied by constant.
Divide LUT is divided by constant.
Original LUT
0
255
(Black)
(White)
Data value
(Original image data)
Description
255
(White)
0
(Black) 0

LUT Math

６ ANALYSIS OPERATION
New LUT
255
(Black)
(White)
Data value
(Original image data)
6-75