Mitsubishi P91DW User Manual Page 78

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Chapter 4: Enhancement Tools
4-3
Rotated 11 degrees clockwise Rotated -11 degrees Image rotated 11 degrees
(Counterclockwise) and flipped vertically
Rotate / Flip box at 11 degrees Rotate / Flip box at –11 degrees Rotate / Flip box at –11
degree and vertical
Flip button pressed
4.3 Histogram
The histogram is a graphical display of the proportion of pixels assigned to each of the
4,095 gray levels. This tool is found in Tool Box, Enhancement Tools.
Histogram display in the Tool Box
The image is made up of picture elements (pixels) having brightness levels ranging from
black to white. A very bright image will have most of its pixels registering high gray
levels and conversely, a very dark image will have most pixels with low gray levels
(approaching zero).
The histogram is displayed in the lower left corner of the screen, below the image
window. The horizontal axis represents the gray scale range: black at the left end and
white at the right end, with levels of gray in between. The number of pixels registering a
particular gray level determines the height of each bar along the axis.
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