Metadata - Dalsa Calibir GXM640 User Manual

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Metadata

Along with each image, the Calibir camera can optionally output metadata associated to
that image. Metadata is appended to the image data:
To accommodate the metadata information the image buffer height (allocated by the
host application) must be increased by 2 lines (buffer height = image height +2). For
example, if the image size is 640 x 480, the allocated buffer height is 482.
To append metadata to the image buffer the Metadata Active feature must be set to True
(ChunkModeActive = True).
In addition, the Metadata Enable feature, available in the GigE Vision Transport Layer
category, must be set to True (GevSCCFGExtendedChunkData
Calibir GXM640 IR Camera User's Manual
Image chunk data (pixels)
Image chunk ID (4 bytes) =
0xDB187D61 (little endian)
0x617D18DB (big endian)
Metadata
Image chunk data size (4 bytes, big endian)
For example, 640x480 = 307200
Features and Configuration Options  43
).
= True