Baumer VisiLine, User Manual

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Pixel depth: In general, pixel depth defines the number of possible different values for
each color channel. Mostly this will be 8 bit, which means 2
8
different "col-
ors".
For RGB or BGR these 8 bits per channel equal 24 bits overall.
Two bytes are needed for transmitting more than 8 bits per pixel - even if the
second byte is not completely filled with data. In order to save bandwidth,
the packed formats were introduced to Baumer VisiLine IP cameras. In this
formats, the unused bits of one pixel are filled with data from the next pixel.
8 bit:
Byte 1 Byte 2 Byte 3
12 bit:
Byte 1 Byte 2
unused bits
Packed:
Byte 1 Byte 2 Byte 3
Pixel 0 Pixel 1
Pixel Formats on Baumer VisiLine IP Cameras 9.1.2.2
Camera Type Mono 8 Mono 12 Mono 12 Packed Bayer RG 8 Bayer RG 10 Bayer RG 12 RGB 8 BGR 8 YUV8_UYV YUV422_8_UYVY YUV41
1_8_UYYVYY
Monochrome
VLG-02M.I ■ ■ ■ □ □ □ □ □ □ □ □
VLG-12M.I ■ ■ ■ □ □ □ □ □ □ □ □
VLG-20M.I ■ ■ ■ □ □ □ □ □ □ □ □
VLG-22M.I ■ ■ □ □ □ □ □ □ □ □ □
VLG-40M.I ■ ■ □ □ □ □ □ □ □ □ □
Color
VLG-02C.I ■ □ □ ■ □ ■ ■ ■ ■ ■ ■
VLG-12C.I ■ □ □ ■ □ ■ ■ ■ ■ ■ ■
VLG-20C.I ■ □ □ ■ □ ■ ■ ■ ■ ■ ■
VLG-22C.I □ □ □ ■ ■ ■ □ □ □ □ □
VLG-40C.I □ □ □ ■ ■ ■ □ □ □ □ □
Figure 11 ►
Bit string of Mono 8 bit
and RGB 8 bit.
Figure 12 ►
Spreading of Mono 12
bit over two bytes.
Figure 13 ►
Spreading of two pixels in
Mono 12 bit over three bytes
(packed mode).