Linea Lite GigE Series Camera Operational Reference • 103
Extracting Metadata Stored in a Sapera Buffer
For Sapera LT developers, the SapMetadata class (included with Sapera version 8.10 and higher)
provides functions for manipulating image metadata. Metadata is appended to the end of virtual
frame buffers; Sapera LT automatically adjusts the buffer size to accommodate the metadata.
Sapera also provides two methods to view metadata. The Sapera CamExpert tool provides a tab
(when the Metadata Mode
feature is enabled) to view the metadata of the last frame capture.
Figure 82: CamExpert – Metadata Tab
Alternatively, Sapera LT provides a demo program called GigEMetaDataDemo.exe which will grab a
number of frames and display the metadata or save it to a file (.csv). In addition, source code and
C++ project files are included for a console-based executable.
Important:
When an internal test pattern image is selected, the Metadata feature values for
Exposure Time and Exposure Delay
are not valid values and must be ignored.
When in free running (not triggered) mode, the Metadata value for feature
Exposure Delay is not a valid value and must be ignored.
The value of Line Status All is updated on the start of exposure.
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