QuercusVL Programming Manual
●
Type: 36
●
Message Data:
●
Id: incidence identifier.
●
ImageIndex (ImgId): number of image inside the incidence image collection.
●
Offset: start position (in the image buffer) of the packet to transfer; in bytes.
●
Length: maximum size of the packet to transfer.
Answer
●
Type: 68
●
Message Data:
●
Size: total image size; in bytes.
●
Length: length of the transferred packet; in bytes.
●
Buffer: packet data. Only valid the first
Length
packets.
4.7.6. SnapshotQuery
Query to receive a snapshot (general system status) of the unit. It returns a captured JPEG
image of 0.3Mp (640 pixels wide and 480 high), and a complete status of detectors, traffic
lights and digital inputs and outputs.
The image content and the
focus
value (current digital focus coefficient) will vary depending on
the value of the query parameters:
●
Zoom to false, incorrect rectangle:
the image obtained corresponds to the entire image
captured by the unit. The focus value will not be calculated (-1).
●
Zoom to false, correct rectangle:
the image obtained corresponds to the entire image
captured by the unit. The focus value will be calculated from the rectangle in the image.
●
Zoom to true, incorrect rectangle:
incorrect combination; returns false.
●
Zoom to true, correct rectangle:
the image obtained corresponds to a zoomed zone of
Quercus Technologies
147
4
Id
2
ImgId
4
Offset
4
Length
4
Size
4
Length
64000
Buffer