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Calibir GXM640 IR Camera User's Manual
Features and Configuration Options
43
Metadata
Along with each image, the Calibir camera can optionally output metadata associated to
that image. Metadata is appended to the image data:
Image chunk data (pixels)
Image chunk ID (4 bytes) =
0xDB187D61 (little endian)
0x617D18DB (big endian)
Image chunk data size (4 bytes, big endian)
For example, 640x480 = 307200
Metadata
To accommodate the metadata information the image buffer height (allocated by the
host application) must be increased by 2 lines (buffer height = image 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
= True
).
