Differences Between Monochrome And Color - Adobe FRAMEMAKER 10 User Manual

Differences between monochrome and color

There are two types of FrameImage files: monochrome and pseudocolor.
Monochrome images
A monochrome graphic has the following header properties:
zs
Property
ras_depth
ras_maptype
ras_maplength
An example of the header for a monochrome graphic is shown below:
&59a66a95
&00000040
&00000040
&00000001
&00000000
&00000001
&00000000
&00000000
A monochrome graphic has no color map. Each data byte represents eight pixels, and the most significant bit is the
leftmost pixel.
Graphic data bytes are hex values that represent bit patterns of black and white. For example, hex 55 represents
binary 01010101, which produces a gray shade; hex FF represents binary 11111111, which produces black; and hex
00 represents binary 00000000, which produces white.
Pseudocolor and gray images
A pseudocolor or gray graphic has the following header properties:
Property
ras_depth
ras_maptype
ras_maplength
An example of the header for a color graphic is shown below:
&59a66a95
&00000040
&00000040
&00000008
&00000000
&00000001
&00000002
&00000300
Each graphic data byte represents one pixel of a particular color. The value of a data byte is an index to a color stored
in the color map. (See "Color map" on page
Value
1
RMT_NONE
0
Value
8
RMT_EQUAL_RGB or RMT_RAW
300
265.)
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