Overlays - Dalsa Calibir GXM640 User Manual

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Overlays

The Calibir GXM640 camera can enable graphic overlays in the output image. Available
overlays include: a reticle, colormap legend, frame counter, metadata and alarm status.
Each overlay can be individually enabled/disabled. Their positions are configurable. A
global overlay mode parameter allows turning on or off all enabled overlays.
 The reticle can be used to highlight specific regions.
 The false colormap legend indicates the relative intensity of the different colors or
greyscale values.
 The frame counter increments with each frame acquired and is reset when the
acquisition is stopped (therefore when snapping single frames the counter always
reads 0).
 Frame metadata is normally transferred separately from the pixels but it can be
overlaid in the image itself for validation by tools that do not support GigE Vision's
Extended Chunk Data payload. For more information refer to the Metadata section.
 The status of the Alarms can be reported as pixel values in the image. The
location of the overlay can be specified and consists of a consecutive segment of
3 pixels, each representing an alarm, with the pixel value 0 indicating Off and
the highest pixel value for the image format indicating On (255, 16383 or 65545
for 8, 14 and 16-bit; for YUYV the 8-bit Y component is used).
Alarm ON
Alarm OFF
When triggered, an alarm remains in the On state until it is reset. Alarms are
configured using the features available in the
40  Features and Configuration Options
Alarm Pixel
1 2 3
Event Control category.
Calibir GXM640 IR Camera User's Manual