Download High Performance Image Control System, Version 6.4 User Manual

The bottom part of the LUT shows a scale representing the input intensity values. In 8 bit mode the scale ranges from 0 to 255, in 10 bit mode from 0 to 1023,
in 12 bit mode from 0 to 4095 and in 16 bit mode from 0 to 32767.
At the centre part of the LUT tool (above the scale) a histogram is displayed
where the user can see the frequency by which intensity values are present in the
image. This histogram can be used as a guide for setting the LUT limits.
The LUT tool is re-sizeable horizontally. If the LUT tool is longer the intensity
scale can be seen and accessed with higher precision but the histogram display
will need more time to update.
LUT tool when using 32 bit image data files
When 32 bit image data file format is used (e.g. with 16 bit digital cameras) the
string “x16” in the lower left corner of the window indicates that the intensity
figures shall be multiplied by 16 to give the real intensity data values.
Upper and lower limits
HiPic allows to display images either in black and white or in pseudocolour
mode (see "LUT (Look up Table)" on page 156). The meaning of the LUT limits
is explained below for both modes.
Intensity values between the lower and the upper limit are displayed using the
full range of the LUT (either in grey-scale or in colour). The values above the
upper limit (which exceed the current LUT) are displayed in yellow (in case of
grey-scale LUT) or black (in case of colour LUT).
The uppermost intensity value of the current acquisition mode is displayed in red
(grey-scale LUT) or in white (colour LUT). Areas in these colours indicate an
overflow of the CCD camera. For 10 bit images the overflow value is 1023 and
for 12 bit images it is 4095. Be sure to reduce your light intensity if you encounter this situation. Please refer to “ Section Images” on page 79 for additional options of LUT useage.
Display mode
< blue cursor
Between cursors
> red cursor
saturation
B/W
Black
Black to white
Yellow
Red
Pseudocolor
Black
Blue to red
Black
White
B/W without
using colors
Black
Black to white
White
White
Table: Image colour-coding in different display modes
High Performance Image Control System, HiPic
Basic operations • 33