Baumer EXG03 - Page 16

16
Pixel depth: In general, pixel depth denes 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 EXG cameras. In this formats,
the unused bits of one pixel are lled with data from the next pixel.
8 bit:
Byte 1 Byte 2 Byte 3
10 bit:
Byte 1 Byte 2
unused bits
12 bit:
Byte 1 Byte 2
unused bits
Packed:
Byte 1 Byte 2 Byte 3
Pixel 0Pixel 1
4.1.2.2 PixelFormatsonBaumerEXGCameras
CameraType Mono 8 Mono 10 Mono 10 Packed Mono 12 Mono 12 Packed Bayer RG 8 Bayer RG 10 Bayer RG 12 RGB 8 Packed BGR 8 Packed YUV 444 Packed YUV 422 Packed YUV 411 Packed
Monochrome
EXG03 ■ ■ ■ □ □ □ □ □ □ □ □ □ □
EXG50 ■ □ □ ■ ■ □ □ □ □ □ □ □ □
Color
EXG03c ■ □ □ □ □ ■ ■ □ ■ ■ ■ ■ ■
Figure11►
Bit string of Mono 8 bit
and RGB 8 bit.
Figure13►
Spreading of Mono 12
bit over two bytes.
Figure12►
Spreading of Mono 10
bit over 2 bytes.
Figure14►
Spreading of two pix-
els in Mono 12 bit over
three bytes (packed
mode).