![Baumer SXG Скачать руководство пользователя страница 45](http://html.mh-extra.com/html/baumer/sxg/sxg_user-manual_2711248045.webp)
45
Baumer Image Info Header
9.3
The Baumer Image Info Header is a data packet, which is generated by the camera and
integrated in the first data packet of every image, if chunk mode is activated.
In this integrated data packet are different settings for this image. BGAPI can read the
Image Info Header. Third Party Software, which supports the chunk mode, can read the
features in the table below.
Feature
Description
ChunkOffsetX
Horizontal offset from the origin to the area of interest (in
pixels).
ChunkOffsetY
Vertical offset from the origin to the area of interest (in pix-
els).
ChunkWidth
Returns the Width of the image included in the payload.
ChunkHeight
Returns the Height of the image included in the payload.
ChunkPixelFormat
Returns the PixelFormat of the image included in the pay
-
load.
ChunkExposureTime
Returns the exposure time used to capture the image.
ChunkBlackLevelSelector Selects which Black Level to retrieve data from.
ChunkBlackLevel
Returns the black level used to capture the image included
in the payload.
ChunkFrameID
Returns the unique Identifier of the frame (or image) includ
-
ed in the payload.
9.4 Packet Size and Maximum Transmission Unit (MTU)
Network packets can be of different sizes. The size depends on the network components
employed. When using
GigE Vision
®
- compliant devices, it is generally recommended
to use larger packets. On the one hand the overhead per packet is smaller, on the other
hand larger packets cause less CPU load.
The packet size of
UDP packets can differ from 576 Bytes up to the MTU.
The MTU describes the maximal packet size which can be handled by all network com
-
ponents involved.
In principle modern network hardware supports a packet size of 1518 Byte, which is
specified in the network standard. However, so-called "
Jumboframes" are on the advance
as Gigabit Ethernet continues to spread. "
Jumboframes" merely characterizes a packet
size exceeding 1500 Bytes.
Baumer SXG cameras can handle a MTU of up to 16384 Bytes.
◄ Figure 48
Baumer Image Info
Header
Содержание SXG
Страница 1: ...Baumer SXG User s Guide for Dual Gigabit Ethernet Cameras with Kodak Sensors ...
Страница 2: ...2 ...