JAI AB-800GE, Руководство пользователя

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AM-800GE / AB-800GE
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7.6.11 GVSP_PIX_RGB8_PACKED (24bit) (Interpolation)
1Byte 2Byte 3Byte
R R R R R R R R G G G G G G G G B B B B B B B B
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
7.6.12 GVSP_PIX_ YUV422_PACKED (16bit)
1Byte 2Byte 3Byte
4Byte
U U U U U U U U Y Y Y Y Y Y Y Y V V V V V V V V Y Y Y Y Y Y Y Y
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
7.6.13 The relationship between PixelFormat and PixelSize.
The pixel format and pixel size are related and if one is changed, the other is
automatically changed.
AM-800GE AB-800GE
Pixel format Pixel size Pixel format Pixel size
Mono8 Bpp8 BayerGR8 Bpp8
Mono10 Bpp16 BayerGR10 Bpp16
Mono10_Packed Bpp12 BayerGR10_Packed Bpp12
Mono12 Bpp16 BayerGR12 Bpp16
Mono12_Packed Bpp12 BayerGR_Packed12 Bpp12
RGB8_Packed Bpp24
YUV422_Packed Bpp16
7.7 YUV output
The AB-800GE has a YUV output, as well as an ordinal RGB interpolated output.
The conversion formula is as follows and cannot be controlled externally.
Y = 0.299*R + 0.587*G + 0.114*B
Cb = 0.5*B – 0.169*R -0.331*G +128
Cr = 0.5*R – 0.419*G – 0.0813*B + 128
While RGB output is 24-bit (8 bits per color), YUV takes advantage of the human visual
system's lower acuity for color variations than for luminance.
The color information (chrominance) is sub-sampled at half the rate of the brightness
component (luminance). Thus, YUV can be compressed into 16-bit output for a faster
full color frame rate that is visually perceived as close to RGB, albeit with lower actual
color precision.