Allied Vision Alvium CSI-2, User Manual

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Specifications
52 Alvium CSI-2 Cameras User Guide V2.8.1
Pixel format default and naming
Other access modes
The
default pixel format
for Alvium CSI-2 cameras is RGB888 (RGB3).
Monochrome cameras are included to enable quick access on V4L2 where
V4L2_PIX_FMT_UYVY is the default. For monochrome cameras, the 3 bytes for
RGB are set to a common value, resulting in gray.
Pixel formats
are named as extended MIPI CSI-2 definitions.
• Video4Linux Access: According to V4L2 definitions.
• Direct Register Access: Alvium CSI-2 cameras output pixel formats according to
the MIPI CSI-2 standard.
Pixel formats for various standards
GenICam for CSI-2 Access
The
default pixel format
for Alvium CSI-2 cameras is RGB8 for color models and
Mono8 for monochrome models.
Pixel formats
are named according to the PFNC (Pixel Format Naming
Convention), see GenICam on page 48.
Naming pattern Examples
MIPI CSI-2 (FOURCC) RAW8 (GREY)
RGB888 (RGB3)
Table 14: Extended MIPI CSI-2 definitions for pixel format naming
MIPI CSI-2 V4L2
V4L2
FOURCC
PFNC
YUV422 8-bit V4L2_PIX_FMT_UYVY UYVY YCbCr422_8_CbYCrY
RGB888 V4L2_PIX_FMT_RGB24 RGB3 RGB8
RAW8 V4L2_PIX_FMT_GREY GREY Mono8
RAW10 V4L2_PIX_FMT_Y10 Y10 Mono10
RAW12 V4L2_PIX_FMT_Y12 Y12 Mono12
Table 15: Equivalent pixel formats in various standards
Availability of pixel formats
The availability of pixel formats depends on camera models and the abilities of the
connected system.
GenICam
for CSI-2
Access