Graphics Programs Reference
In-Depth Information
The shades of gray are defined in the following table:
Shade of Gray
Red
Green
Blue
1 Pure Black
0
0
0
2
32
32
32
3
64
64
64
4
96
96
96
5
128
128
128
6
160
160
160
7
192
192
192
8
224
224
224
9 Pure White
255
255
255
The array and its
Histogram
are shown in the image below. Since each swatch of gray is
the exact same size, there are the same number of data points for each shade of gray. Since
there is nothing else in the image, the
Histogram
only records a vertical bar at each value in
the array. The
Histogram
is shown to the right of the array — the gray value for each bar
was added to the Histogram for informational purposes. These values are on a text layer
and were not part of the original
Histogram
.
