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Chapter 15 Menus and Dialog Boxes 305
MAX:
The
A
file is compared, pixel by pixel, with the
B
file and the larger of the two
values written to the
C
file. It is also possible to compare each pixel of the
A
file
with a constant entered on the
B
tab page, with the larger of the two values
written to the
C
file.
Non-Linear Operations
Log10:
The Log10 of the
A
file is computed pixel by pixel and the results written to the
C
file.
Natural Log:
The natural log of the
A
file is computed pixel by pixel and the results
written to the
C
file.
Square Root:
The square root of each point in the
A
file is computed and the result
written to the corresponding point of the
C
file.
Squared:
Each point in the
A
file is squared and the result written to the corresponding
point of the
C
file.
Absolute:
The absolute value of each point in the
A
file is computed and the result
written to the corresponding point of the
C
file.
Bitwise Operations
AND:
A bitwise AND operation is performed on the binary representation of each pixel
of the
A
file and each pixel of the
B
file, with the result written to the
C
file. A
twelve-bit example follows.
Bits
Decimal
Value
Pixel value in
A
0 1 0 1 0 1 0 10 1 0 1 1365
Corresponding pixel value in
B
0 0 0 0 0 0 1 1 1 1 1 1 63
Result written to
C
0 0 0 0 0 0 0 1 0 1 0 1 21
OR:
A bitwise OR operation is performed on the binary representation of each pixel of
the
A
file and each pixel of the
B
file, with the result written to the
C
file. An eight-
bit example follows.
Bits
Decimal
Value
Pixel value in
A
0 1 0 1 0 1 0 10 1 0 1 1365
Corresponding pixel value in
B
0 0 0 0 0 0 1 1 1 1 1 1 63
Result written to
C
0 1 0 1 0 1 1 1 1 1 1 1 1407
Exclusive OR:
A bitwise Exclusive OR operation is performed on the binary
representation of each pixel of the
A
file and each pixel of the
B
file, with the result
written to the
C
file. An eight-bit example follows.
Bits
Decimal
Value