35
Pixel depth: In general, pixel depth denes 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 lled with data. In order to save bandwidth, the
packed formats were introduced to Baumer CX cameras. In this formats, the
unused bits of one pixel are lled with data from the next pixel.
8 bit:
9.1.2.2 Pixel Formats VCXG
Camera Type
Mono8
Mono10
Mono12
Mono12p
Bayer RG8
Bayer RG10
Bayer RG12
Bayer RG12p
RGB8
BGR8
Monochrome
VCXG-53M ■ ■ □ □ □ □ □ □ □ □
Color
VCXG-53C ■ ■ □ □ ■ ■ □ □ ■ ■
9.1.2.3 Pixel Formats VCXU
Camera Type
Mono8
Mono10
Mono12
Mono12p
Bayer RG8
Bayer RG10
Bayer RG12
Bayer RG12p
RGB8
BGR8
Monochrome
VCXU-23M ■ ■ ■ ■ □ □ □ □ □ □
VCXU-50M ■ ■ ■ ■ □ □ □ □ □ □
Color
VCXU-23C □ □ □ □ ■ ■ ■ ■ □ □
VCXU-50C □ □ □ □ ■ ■ ■ ■ □ □
◄Figure10
Bit string of Mono 8 bit
and RGB 8 bit.
◄Figure11
Spreading of Mono 12
bit over two bytes.
◄Figure12
Spreading of two pix-
els in Mono 12 bit over
three bytes (packed
mode).