Hardware manual

Histogram Impact Reference Guide
Datalogic Automation Inc. 4-26
Histogram
The Histogram control displays the histogram of a selected ROI as a bar chart, where each bar represents the
greyscale intensity as a percent. The image is linked from a vision program task then this control is linked to
the Image Display Connection property on the Image Display control.
Rectangle See Rectangle ROI type above
Circle %extents% X and Y, radius
%location% X and Y
%hints% description of editing that can be performed
Polygon %extents% X and Y of each polygon vertex
%location% X and Y of the vertex "grab region" closest to the
mouse
%vertex% The number of the vertex with a "grab region" clos-
est to the mouse
%hints% description of editing that can be performed
Property Name What it is
Height The control’s height.
Width The control’s width.
X The X coordinate of the control’s left edge.
Y The Y coordinate of the control’s top edge.
Enabled If True, the control is enabled.
Histogram Entire
ROI List
If True, and the selected ROI type is a list ROI, the entire list is displayed
in the histogram.
Greyscale Bar
Color
Click in the field to select a color for the control’s greyscale value bars.
Greyscale Maxi-
mum (%)
The maximum greyscale value of the currently displayed histogram.
Greyscale Mean
(%)
The mean greyscale value of the currently displayed histogram.
Greyscale Mini-
mum (%)
The minimum greyscale value of the currently displayed histogram.
Image Display
Connection
Click in the link field to link to the desired Image Display Connection prop-
erty.
Axis Color Click in the field to select a color for the histogram’s X and Y axis and
their values.
ROI Type Keyword Properties Displayed