Baumer USB3 Vision, 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 equate to 24 bits overall.
Two bytes are needed to transmit more than 8 bits per pixel - even if the
second byte is not completely filled with data. In order to save bandwidth,
packed formats have been added to Baumer VLU cameras. In these for-
mats, 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 VLU Cameras 9.1.2.2
Camera Type Mono 8 Mono 12 Mono 12 Packed Bayer RG 8 Bayer RG 12 RGB 8 BGR 8 YUV8_UYV YUV422_8_UYVY YUV41
1_8_UYYVYY
Monochrome
VLU-02M ■ ■ ■ □ □ □ □ □ □ □
VLU-03M ■ ■ ■ □ □ □ □ □ □ □
VLU-12M ■ ■ ■ □ □ □ □ □ □ □
Color
VLU-02C ■ □ □ ■ ■ ■ ■ ■ ■ ■
VLU-03C ■ □ □ ■ ■ ■ ■ ■ ■ ■
VLU-12C ■ □ □ ■ ■ ■ ■ ■ ■ ■
◄ Figure 10
Bit string of Mono 8 bit
and RGB 8 bit.
◄ Figure 11
Spreading of Mono 12
bit over two bytes.
◄ Figure 12
Spreading of two pix-
els in Mono 12 bit over
three bytes (packed
mode).